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340 - series thermostat
$13.49
340 - series thermostat
$13.49
Powered by a precisely formulated thermal-responsive wax pellet in a heat-conducting copper cup equipped with a stainless steel piston, the heat motor is 100% calibrated to ensure quality and performance. This t-stat encases the mechanism in a stainless steel assembly with a self-cleaning, self-aligning valve, flange, bridge, and spring for a securely sealed unit that will keep your engine temperature within OEM specifications. All thermostats are not alike; so, when you want a well-engineered product buy this one.
| Temperature (F) | 180 Degrees |
| Depth from Flange (in) | 0.78 |
| Design | Reverse Poppet |
| Flange Diameter (in) | 2.125 |
| Height from Flange (in) | 0.82 |
| Includes Installation Tool | No |
| Jiggle Pin | No |
| Number of Check Valves | None |
| Number of Gaskets | None |
| Number of Seals | None |
| OE Comparison Rating | OE Quality |
| Type | OE Type Thermostat |
| Make | Year |
|---|---|
| ALFA ROMEO | 1962-1979 |
| AM GENERAL | 1970 |
| AMERICAN MOTORS | 1961-1984 |
| AUSTIN | 1960-1970 |
| AUSTIN-HEALEY | 1953-1969 |
| BUICK | 1935-1992 |
| CADILLAC | 1963-1993 |
| CHECKER | 1959-1976 |
| CHEVROLET | 1942-1996 |
| CHRYSLER | 1980-1981 |
| DODGE | 1961-2003 |
| FARGO | 1964-1971 |
| FIAT | 1961-1974 |
| FORD | 1949-1995 |
| GEO | 1989-1991 |
| GMC | 1959-1996 |
| HILLMAN | 1962-1965 |
| JAGUAR | 1950-1970 |
| JEEP | 1960-2005 |
| KAISER-FRAZER | 1948-1954 |
| MERCEDES-BENZ | 1955-1962 |
| MERCURY | 1949-1986 |
| MG | 1955-1976 |
| MORGAN | 1979-1981 |
| MORRIS | 1958-1970 |
| OLDSMOBILE | 1954-1992 |
| OPEL | 1956-1960 |
| PACKARD | 1958 |
| PLYMOUTH | 1960-1981 |
| PONTIAC | 1949-1993 |
| ROVER | 1971 |
| SAAB | 1960-1974 |
| SIMCA | 1969 |
| STUDEBAKER | 1956-1966 |
| TRIUMPH | 1968-1978 |
|
Alternate/OEM Part Number(s): Carquest 60208, Detroit Diesel 3333594, Motorad 2000-180 / 2000180, Motorad 2044-180 / 2044180 Motorad HP2000, Napa 530080 ,Napa Belts/Hose 33008S
Parts Master 34108, Stant 34108, Stant 45358, Stant 59358, Stant 65358, Superstat 45358
American Motors Corp (Amc) 3015433, 3156283, 3192166, 3203275, 4488422, 4488471, 8123420, 8127383, 83500360, 8983500360, 905594 J8127383, Chrysler 2843210, 3780112, John Deere T10906, AT22963, AT24013 Mazda AJ5715171A Stant Superstat 45359, |
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Visit product page →Why Robertshaw? Because we make a hi flow pump and its unique three port construction or "balanced sleeve" design equalizes the system pressures above and below the thermostat’s moving valve. Therefore the thermostat is pressure balanced and will respond to system temperatures only. No other thermostat does this.
Other Features of a Robert Shaw Thermostat:
1) Stress-free construction. Robertshaw makes the thermostat's strut assembly from brass, not stainless steel, because brass can be bradded to the housing with heat instead of sledge hammer-like stress. This technique permits two brads per strut. Other manufacturers forcefully attach the struts to the housing with intense, metal-weakening pressure on the struts, binding each strut in only one spot.
2) The Power Pill®. This is the heart of a Robertshaw thermostat. It detects minute changes in the temperature of the coolant, and quickly activates a precision-engineered stem or piston to open and close the thermostat valve.
3) One-piece bypass poppet. With other thermostats, the bypass valve stem is welded on. The weld tends to fail under stress. To eliminate this problem, Robertshaw manufactures the entire copper cup and bypass stem from a single piece of metal.
4) Short-stroke piston. In conventional thermostats, the piston must make a large stroke to open the thermostat far enough for adequate coolant flow. But the long stroke compromises durability. Robertshaw engineers achieved a shorter stroke with a uniquely-designed flange and poppet. This design increases the longevity of the thermostat, yet still allows adequate coolant circulation.
5) Contoured strut. Making the strut assembly from brass instead of steel provides another benefit: brass, being more malleable than steel, can be precisely formed to maximize coolant flow.
6) Uniform quality. Robertshaw builds all thermostats to OEM standards -- so your replacement thermostat is identical to those used in new Fords, Chryslers, and other cars.The Power Pill
At the heart of a Robertshaw thermostat is the power pill. Its job: to detect minute changes in the temperature of the coolant, and to quickly activate a precision-engineered piston that opens and closes the thermostat valve. Compared to the thermal elements in some thermostats, Robertshaw's Power Pill® has major advantages:
1) Rapid response. The Power Pill's piston is activated by a temperature-sensitive mixture of metallic powder and wax. Some thermostats use an all-wax charge, which responds slowly to temperature changes. Other brands mix copper powder with the wax for faster response, but the copper quickly separates from the wax. Robertshaw developed a process to maintain suspension of the copper powder in the wax, so the fast response doesn't deteriorate and the thermostat will not "stick-open" to cause the engine to run cool.
2) Reliable performance. Most manufacturers use a one-piece rubber diaphragm to seal the charge and drive the piston. If the rubber part ruptures, the thermostat fails. Robertshaw uses two separate parts: a diaphragm to seal the wax, and a stem seat or plug that drives the piston. Rubber material for each part is formulated especially to meet each part's unique requirements. Wear or damage to the stem seat still allows the thermostat to operate satisfactorily.
3) Precise performance. Every Robertshaw Power Pill is calibrated to bring the thermostat's start-to-open temperature within strict tolerances.Make CID Ltr Year AM GENERAL 395 6.5 1996-2000 AMERICAN MOTORS 196 3.2 1961-1970 AMERICAN MOTORS 232 3.8 1965-1979 AMERICAN MOTORS 258 4.2 1976-1988 AMERICAN MOTORS 304 5.0 1970-1979 AMERICAN MOTORS 343 5.6 1967-1969 AMERICAN MOTORS 360 5.9 1970-1978 AMERICAN MOTORS 390 6.4 1969-1970 AMERICAN MOTORS 401 6.6 1971-1974 BUICK 173 2.8 1980-1986 BUICK 181 3.0 1982-1985 BUICK 196 3.2 1978-1979 BUICK 231 3.8 1978-1985 BUICK 250 4.1 1968-1975 BUICK 252 4.1 1980-1984 BUICK 260 4.3 1975-1984 BUICK 265 4.3 1980-1981 BUICK 267 4.4 1981-1982 BUICK 300 4.9 1964-1967 BUICK 301 4.9 1977-1980 BUICK 305 5.0 1977-1991 BUICK 307 5.0 1980-1990 BUICK 340 5.6 1966-1967 BUICK 350 5.7 1968-1995 BUICK 400 6.6 1967-1969 BUICK 403 6.6 1975-1979 BUICK 430 7.1 1967-1969 BUICK 455 7.5 1969-1976 CADILLAC 250 4.1 1987-1988 CADILLAC 252 4.1 1980-1982 CADILLAC 260 4.3 1985 CADILLAC 273 4.5 1988-1992 CADILLAC 300 4.9 1991-1994 CADILLAC 305 5.0 1991-1992 CADILLAC 307 5.0 1986-1990 CADILLAC 350 5.7 1978-1995 CADILLAC 390 6.4 1963 CADILLAC 429 7.0 1964-1967 CHECKER 229 3.8 1980-1982 CHECKER 230 3.8 1968 CHECKER 250 4.1 1969-1979 CHECKER 267 4.4 1980-1982 CHECKER 305 5.0 1978-1982 CHECKER 307 5.0 1968 CHECKER 327 5.4 1968-1969 CHECKER 350 5.7 1969-1982 CHEVROLET 173 2.8 1980-1986 CHEVROLET 194 3.2 1962-1966 CHEVROLET 196 3.2 1978-1979 CHEVROLET 200 3.3 1978-1979 CHEVROLET 229 3.8 1980-1984 CHEVROLET 230 3.8 1963-1970 CHEVROLET 231 3.8 1978-1987 CHEVROLET 235 3.9 1955-1962 CHEVROLET 250 4.1 1972-1984 CHEVROLET 260 4.3 1982-1985 CHEVROLET 262 4.3 1975-1994 CHEVROLET 265 4.3 1955-1957 CHEVROLET 267 4.4 1979-1982 CHEVROLET 283 4.6 1957-1967 CHEVROLET 292 4.8 1973-1989 CHEVROLET 305 5.0 1976-1995 CHEVROLET 307 5.0 1968-1990 CHEVROLET 327 5.4 1962-1969 CHEVROLET 348 5.7 1958-1961 CHEVROLET 350 5.7 1969-1995 CHEVROLET 395 6.5 1996-2000 CHEVROLET 396 6.5 1968-1970 CHEVROLET 400 6.6 1971-1980 CHEVROLET 402 6.6 1971-1972 CHEVROLET 409 6.7 1961-1965 CHEVROLET 427 7.0 1966-1969 CHEVROLET 454 7.4 1973-1990 DODGE 170 2.8 1961-1968 DODGE 225 3.7 1961-1968 DODGE 318 5.2 1979-1980 DODGE 360 5.9 1979-1980 DODGE 440 7.2 1979 EAGLE 150 2.5 1989 FORD 144 2.4 1960-1964 FORD 170 2.8 1960-1972 FORD 200 3.3 1963-1983 FORD 221 3.6 1963-1984 FORD 232 3.8 1982-194-1984 FORD 240 3.9 1965-1974 FORD 242 4.0 1968-1969 FORD 250 4.1 1969-1980 FORD 255 4.2 1980-1982 FORD 260 4.3 1963-1964 FORD 289 4.7 1963-1968 FORD 300 4.9 1968-1994 FORD 302 5.0 1968-1989 FORD 351 5.8 1975-1989 FORD 360 5.9 1968-1976 FORD 390 6.4 1967-1971 FORD 420 6.9 1983-1987 FORD 427 7.0 1967-1969 FORD 428 7.0 1967-1970 FORD 429 7.0 1968-1973 FORD 445 7.3 1988-1994 FORD 460 7.5 1972-1994 GMC 200 3.3 1978-1979 GMC 229 3.8 1980-1984 GMC 231 3.8 1978-1984 GMC 250 4.1 1973-1984 GMC 262 4.3 1985-1994 GMC 267 4.4 1980-1982 GMC 292 4.8 1973-1989 GMC 305 5.0 1976-1994 GMC 350 5.7 1969-1994 GMC 395 6.5 1996-2000 GMC 400 6.6 1975-1980 GMC 454 7.4 1973-1990 JEEP 126 2.1 1986 JEEP 134 2.1 1946, 1961-1983 JEEP 150 2.5 1984-2002 JEEP 225 3.7 1968-1974 JEEP 226 3.7 1962-1963 JEEP 230 3.8 1962-1990 JEEP 232 3.8 1976-1986 JEEP 242 4.0 1989-2006 JEEP 258 4.2 1972-2006 JEEP 304 5.0 1972-1981 JEEP 350 5.7 1969-1973 JEEP (but not grand cherokee) 360 5.9 1972-1991 JEEP 401 6.6 1974-1978 LINCOLN 232 3.8 1982 LINCOLN 302 5.0 1977-1982 LINCOLN 351 5.8 1980 LINCOLN 460 7.5 1969-1978 MERCEDES-BENZ 116 1.9 1960-1963 MERCURY 144 2.4 1962-1963 MERCURY 170 2.8 1962-1972 MERCURY 200 3.3 1968-1983 MERCURY 221 3.6 1962-1963 MERCURY 232 3.8 1982-1983 MERCURY 250 4.1 1969-1980 MERCURY 255 4.2 1980-1982 MERCURY 260 4.3 1963-1964 MERCURY 289 4.7 1964-1968 MERCURY 302 5.0 1969-1986 MERCURY 351 5.8 1970-1986 MERCURY 390 6.4 1967-1970 MERCURY 410 6.7 1967 MERCURY 427 7.0 1967-1968 MERCURY 428 7.0 1967-1970 MERCURY 429 7.0 1969-1973 MERCURY 460 7.5 1972-1978 OLDSMOBILE 151 2.5 1982-1992 OLDSMOBILE 173 2.8 1980-1986 OLDSMOBILE 181 3.0 1982-1985 OLDSMOBILE 215 3.5 1961-1963 OLDSMOBILE 225 3.7 1964-1965 OLDSMOBILE 231 3.8 1975-1987 OLDSMOBILE 250 4.1 1973-1976 OLDSMOBILE 252 4.1 1981-1984 OLDSMOBILE 260 4.3 1975-1985 OLDSMOBILE 262 4.3 1991-1992 OLDSMOBILE 267 4.4 1981-1982 OLDSMOBILE 305 5.0 1977-1992 OLDSMOBILE 307 5.0 1980-1990 OLDSMOBILE 330 5.4 1964-1967 OLDSMOBILE 350 5.7 1975-1992 OLDSMOBILE 371 6.1 1957-1959 OLDSMOBILE 394 6.5 1961-1964 OLDSMOBILE 400 6.6 1965-1975 OLDSMOBILE 403 6.6 1977-1979 OLDSMOBILE 425 7.0 1965-1967 OLDSMOBILE 455 7.5 1972-1976 PLYMOUTH 318 5.2 1979-1980 PLYMOUTH 360 5.9 1979 PONTIAC 140 2.3 1975-1976 PONTIAC 173 2.8 1980-1986 PONTIAC 215 3.5 1964-1965 PONTIAC 229 3.8 1980-1983 PONTIAC 230 3.8 1966-1967 PONTIAC 231 3.8 1976-1987 PONTIAC 239 3.9 1946-1954 PONTIAC 249 4.1 1946-1949 PONTIAC 250 4.1 1972-1976 PONTIAC 252 4.1 1982 PONTIAC 260 4.3 1975-1985 PONTIAC 262 4.3 1985-1987 PONTIAC 265 4.3 1980-1981 PONTIAC 267 4.4 1981-1982 PONTIAC 268 4.4 1950-1954 PONTIAC 287 4.7 1955 PONTIAC 301 4.9 1977-1981 PONTIAC 305 5.0 1977-1992 PONTIAC 307 5.0 1981-1989 PONTIAC 316 5.2 1956 PONTIAC 326 5.3 1963-1967 PONTIAC 347 5.7 1957 PONTIAC 350 5.7 1972-1992 PONTIAC 370 6.1 1958 PONTIAC 389 6.4 1965-1966 PONTIAC 400 6.6 1972-1979 PONTIAC 403 6.6 1977-1979 PONTIAC 421 6.9 1963-1966 PONTIAC 428 7.0 1967-1969 PONTIAC 455 7.5 1972-1976 The model list of applications for this thermostat series is so extensive it cannot be part of the search functionality. It is included here for the secondary site search feature.
190sl, 442, 6000, 88, a100, allante, ambassador, amx, apollo, astre, astro, b100 van, b200 van, b300 van, bel air, belvedere, biscayne, blazer, bonneville, bravada, bronco, brookwood, brougham, c10 pickup, c10 suburban, c15/c1500 pickup, c15/c1500 suburban, c1500 pickup, c1500 suburban, c20 pickup, c20 suburban, c25/c2500 pickup, c25/c2500 suburban, c2500 pickup, c2500 suburban, c30 pickup, c35/c3500 pickup, c3500 pickup, caballero, calais, caliente, camaro, capri, caprice, caravelle, catalina, cb300, celebrity, centurion, century, charger, cherokee, chevelle, chevy ii, chieftain, citation, cj7, classic, club, club wagon, cobra, colony park, comanche, comet, commuter, concord, continental, coronet, corvette, cougar, country cruiser, country sedan, country squire, custom, custom 500, custom cruiser, cutlass, cutlass calais, cutlass ciera, cutlass cruiser, cutlass supreme, cyclone, d100 pickup, d100 series, d150 pickup, d200 pickup, d200 series, d300 pickup, d300 series, d350 pickup, d400 pickup, d450 pickup, dart, del ray, delmont 88, delta 88, deluxe, deville, diplomat, dj5, dj6, duster, dynamic, e-100 econoline, e-150 econoline, e-200 econoline, e-250 econoline, e-300 econoline, e-350 econoline, eagle, econoline, el camino, eldorado, electra, estate wagon, executive, express 2500, f-100 pickup, f-150 pickup, f-250 pickup, f-350 pickup, f-450 super duty pickup, f53 stripped chassis, f59 stripped chassis, f85, fairlane, fairmont, falcon, falcon sedan delivery, fc170, fiesta, firebird, fleetwood, ford 300, fury, fury i, fury ii, fury iii, g10 van, g15/g1500 van, g20 van, g25/g2500 van, g2500 van, g30 van, g35/g3500 van, g3500 van, galaxie, galaxie 500, gladiator, gran fury, gran sport, gran torino, granada, grand am, grand cherokee, grand lemans, grand marquis, grand prix, grand safari, grand wagoneer, grandville, gremlin, gs, gs 400, gs 455, gto, hornet, hummer, impala, j10, j-100, j20, j-2500, j-2600, j-2700, j-3500, j-3600, j-3700, j-3800, javelin, jeep, jeepster, jetfire, jetstar 88, jimmy, k10 pickup, k10 suburban, k15/k1500 pickup, k15/k1500 suburban, k1500 pickup, k1500 suburban, k20 pickup, k20 suburban, k25/k2500 pickup, k25/k2500 suburban, k2500 pickup, k2500 suburban, k30 pickup, k35/k3500 pickup, k3500 pickup, kingswood, laguna, lancer, laurentian, lemans, lesabre, ltd, ltd ii, m-400, m-450, magnum, malibu, marathon, marauder, mark iii, mark iv, mark v, mark vi, marlin, marquis, matador, maverick, meteor, monarch, montclair, monte carlo, montego, monterey, monza, mustang, mustang ii, nova, omega, one-fifty series, p10 series, p10 van, p100, p-100, p15/p1500 van, p20 series, p20 van, p200, p25/p2500 van, p30 series, p30 van, p300, p35/p3500 van, p-350, pacer, parisienne, park lane, pb100 van, pb150 van, pb200 van, pb250 van, pb300 van, pb350 van, phoenix, polara, premier, r10 pickup, r10 suburban, r1500 pickup, r1500 suburban, r20 pickup, r20 suburban, r2500 pickup, r2500 suburban, r30 pickup, r3500 pickup, rambler, ramcharger, ranch wagon, ranchero, regal, riviera, roadmaster, rogue, s10 blazer, s10 pickup, s15 jimmy, s15 pickup, s15 sonoma, s15 syclone, s15 typhoon, safari, savana 2500, savana 3500, scrambler, series 62, series 75 fleetwood, seville, skyhawk, skylark, special, spirit, sportwagon, sprint, st. regis, star chief, starfire, streamliner, suburban, sunbird, sunliner, super 88, super chief, super six, tahoe, tempest, thunderbird, torino, tornado, toronado, torpedo, town car, townsman, trailduster, truck, two-ten series, universal, v10 suburban, v1500 pickup, v1500 suburban, v20 pickup, v20 suburban, v2500 pickup, v2500 suburban, v30 pickup, v3500 pickup, ventura, versailles, victoria, villager, vista cruiser, volare, voyager, w100 pickup, w100 series, w150 pickup, w200 pickup, w200 series, w300 pickup, w300 series, wagoneer, wildcat, wrangler, yukon, zephyr
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Visit product page →The Robertshaw 333 series thermostat has the distinction of being the only available thermostat that would accommodate the 351 Cleveland Controlled bypass system*. A 351C provided greater water flow in the engine for a faster, more even warm-up without creating hot spots (particularly in the valve area). The bypass design controlled the water flow and temperature with less cycling and increased the flow to the radiator for improved cooling performance. It was an ideal solution for overheating 351C found in mustangs and hot Panteras.
The OE Robertshaw thermostats for the OE bypass is available again. Its made in the USA. Yes this is a real Robertshaw 333 series. If you want 160 degree alternative, consider the 333-substitute
The substitute performs the same preheat function but we resized the bypass hole for more temperature options.
*The 400 and 351M had this feature cast into the block and did not utilize this brass bypass insert. The cast bypass hole requires the 333 series.
Year Make Model Eng CID VIN 1978-1979 FORD BRONCO V8 351 H 1984 FORD BRONCO V8 351 H 1970-1971 FORD COBRA V8 351 M 1971 FORD COBRA V8 351 H 1970-1974 FORD COUNTRY SEDAN V8 351 H 1972-1974 FORD COUNTRY SEDAN V8 400 S 1970-1974 FORD COUNTRY SQUIRE V8 351 H 1979 FORD COUNTRY SQUIRE V8 351 H 1972-1974 FORD COUNTRY SQUIRE V8 400 S 1975-1976 FORD COUNTRY SQUIRE V8 400 S 1970-1972 FORD CUSTOM V8 351 H 1972 FORD CUSTOM V8 400 S 1970-1974 FORD CUSTOM 500 V8 351 H 1976-1977 FORD CUSTOM 500 V8 351 H 1972-1974 FORD CUSTOM 500 V8 400 S 1975-1977 FORD CUSTOM 500 V8 400 S 1976-1979 FORD E-100 ECONOLINE V8 351 H 1976-1979 FORD E-150 ECONOLINE V8 351 H 1980-1984 FORD E-150 ECONOLINE V8 351 G 1976-1979 FORD E-250 ECONOLINE V8 351 H 1980-1984 FORD E-250 ECONOLINE V8 351 G 1984 FORD E-250 ECONOLINE V8 351 H 1981 FORD E-250 ECONOLINE V8 400 Z 1976-1979 FORD E-350 ECONOLINE V8 351 H 1980-1984 FORD E-350 ECONOLINE V8 351 G 1981-1982 FORD E-350 ECONOLINE V8 400 Z 1977-1979 FORD F-100 PICKUP V8 351 H 1981 FORD F-100 PICKUP V8 351 G 1978-1979 FORD F-100 PICKUP V8 400 S 1977-1978 FORD F-150 PICKUP V8 351 H 1978-1979 FORD F-150 PICKUP V8 400 S 1979 FORD F-150 PICKUP V8 351 H 1981-1984 FORD F-150 PICKUP V8 351 G 1984 FORD F-150 PICKUP V8 351 H 1977-1979 FORD F-250 PICKUP V8 351 H 1980-1984 FORD F-250 PICKUP V8 351 G 1984 FORD F-250 PICKUP V8 351 H 1978-1979 FORD F-250 PICKUP V8 400 S 1981-1982 FORD F-250 PICKUP V8 400 Z 1978-1979 FORD F-350 PICKUP V8 351 H 1980-1984 FORD F-350 PICKUP V8 351 G 1978-1979 FORD F-350 PICKUP V8 400 S 1980-1982 FORD F-350 PICKUP V8 400 Z 1970 FORD FAIRLANE V8 351 H 1970 FORD FAIRLANE V8 351 M 1970 FORD FALCON V8 351 M 1971-1974 FORD GALAXIE 500 V8 351 H 1972-1974 FORD GALAXIE 500 V8 400 S 1972-1974 FORD GRAN TORINO V8 351 H 1976 FORD GRAN TORINO V8 351 H 1972-1974 FORD GRAN TORINO V8 351 Q 1972-1974 FORD GRAN TORINO V8 400 S 1975-1976 FORD GRAN TORINO V8 400 S 1976-1977 FORD GRANADA V8 351 H 1970-1974 FORD LTD V8 351 H 1976-1979 FORD LTD V8 351 H 1972-1974 FORD LTD V8 400 S 1975-1978 FORD LTD V8 400 S 1978-1979 FORD LTD II V8 351 H 1977-1978 FORD LTD II V8 400 S 1971-1973 FORD MUSTANG V8 351 H 1970-1971 FORD MUSTANG V8 351 M 1972-1973 FORD MUSTANG V8 351 Q 1970-1974 FORD RANCH WAGON V8 351 H 1972-1974 FORD RANCH WAGON V8 400 S 1975-1976 FORD RANCH WAGON V8 400 S 1970-1974 FORD RANCHERO V8 351 H 1976-1979 FORD RANCHERO V8 351 H 1970-1971 FORD RANCHERO V8 351 M 1972-1974 FORD RANCHERO V8 351 Q 1973-1974 FORD RANCHERO V8 400 S 1975-1978 FORD RANCHERO V8 400 S 1978-1979 FORD THUNDERBIRD V8 351 H 1977-1978 FORD THUNDERBIRD V8 400 S 1970-1974 FORD TORINO V8 351 H 1976 FORD TORINO V8 351 H 1970-1971 FORD TORINO V8 351 M 1972-1974 FORD TORINO V8 351 Q 1973-1974 FORD TORINO V8 400 S 1975-1976 FORD TORINO V8 400 S 1978-1979 LINCOLN CONTINENTAL V8 400 S 1978-1979 LINCOLN MARK V V8 400 S 1971-1973 MERCURY COLONY PARK V8 351 H 1979 MERCURY COLONY PARK V8 351 H 1972-1976 MERCURY COLONY PARK V8 400 S 1971-1974 MERCURY COUGAR V8 351 H 1975-1979 MERCURY COUGAR V8 351 H 1970-1971 MERCURY COUGAR V8 351 M 1972-1974 MERCURY COUGAR V8 351 Q 1974-1978 MERCURY COUGAR V8 400 S 1971 MERCURY CYCLONE V8 351 H 1970-1971 MERCURY CYCLONE V8 351 M 1979 MERCURY GRAND MARQUIS V8 351 H 1976-1978 MERCURY GRAND MARQUIS V8 400 S 1972-1973 MERCURY MARQUIS V8 351 H 1978-1979 MERCURY MARQUIS V8 351 H 1972-1978 MERCURY MARQUIS V8 400 S 1976-1977 MERCURY MONARCH V8 351 H 1971-1974 MERCURY MONTEGO V8 351 H 1975-1976 MERCURY MONTEGO V8 351 H 1970-1971 MERCURY MONTEGO V8 351 M 1972-1974 MERCURY MONTEGO V8 351 Q 1973-1976 MERCURY MONTEGO V8 400 S 1971-1973 MERCURY MONTEREY V8 351 H 1972-1974 MERCURY MONTEREY V8 400 S -
On saleVisit product page →The Robertshaw 333 series thermostat has the distinction of being the only available thermostat that would accommodate the 351 Cleveland controlled bypass system*. A 351C provided greater water flow in the engine for a faster, more even warm-up without creating hot spots (particularly in the valve area). The bypass design controlled the water flow and temperature with less cycling and increased the flow to the radiator for improved cooling performance. It was an ideal solution for overheating mustangs and hot Panteras. For a time, due to slowing sales, Robertshaw ended production of the 333 product.
When we discovered a hat modification and plate was sold for $125.65 without the thermostat we thought there has to be a more economical way. We designed an alternative sized bypass that will utilize the Robertshaw 330 series hi flow thermostat in the existing 351C controlled bypass system. Simply remove your bypass and tap the new bypass into the counter-bore until it seats and install the 330 series. That’s all there is to it.
Most ran these engines with a 192 degree t-stat but the 330 is series available in 160, 180 and 195.
Insert and the Robertshaw thermostats are both Made in the USA.
*The 400 and 351M had this feature cast into the block and did not utilize this brass bypass. If you have the 400 or the 351M you can purchase the 330 series. The cast bypass will be partially sealed off.
Year Make Model Eng CID VIN 1978-1979 FORD BRONCO V8 351 H 1984 FORD BRONCO V8 351 H 1970-1971 FORD COBRA V8 351 M 1971 FORD COBRA V8 351 H 1970-1974 FORD COUNTRY SEDAN V8 351 H 1972-1974 FORD COUNTRY SEDAN V8 400 S 1970-1974 FORD COUNTRY SQUIRE V8 351 H 1979 FORD COUNTRY SQUIRE V8 351 H 1972-1974 FORD COUNTRY SQUIRE V8 400 S 1975-1976 FORD COUNTRY SQUIRE V8 400 S 1970-1972 FORD CUSTOM V8 351 H 1972 FORD CUSTOM V8 400 S 1970-1974 FORD CUSTOM 500 V8 351 H 1976-1977 FORD CUSTOM 500 V8 351 H 1972-1974 FORD CUSTOM 500 V8 400 S 1975-1977 FORD CUSTOM 500 V8 400 S 1976-1979 FORD E-100 ECONOLINE V8 351 H 1976-1979 FORD E-150 ECONOLINE V8 351 H 1980-1984 FORD E-150 ECONOLINE V8 351 G 1976-1979 FORD E-250 ECONOLINE V8 351 H 1980-1984 FORD E-250 ECONOLINE V8 351 G 1984 FORD E-250 ECONOLINE V8 351 H 1981 FORD E-250 ECONOLINE V8 400 Z 1976-1979 FORD E-350 ECONOLINE V8 351 H 1980-1984 FORD E-350 ECONOLINE V8 351 G 1981-1982 FORD E-350 ECONOLINE V8 400 Z 1977-1979 FORD F-100 PICKUP V8 351 H 1981 FORD F-100 PICKUP V8 351 G 1978-1979 FORD F-100 PICKUP V8 400 S 1977-1978 FORD F-150 PICKUP V8 351 H 1978-1979 FORD F-150 PICKUP V8 400 S 1979 FORD F-150 PICKUP V8 351 H 1981-1984 FORD F-150 PICKUP V8 351 G 1984 FORD F-150 PICKUP V8 351 H 1977-1979 FORD F-250 PICKUP V8 351 H 1980-1984 FORD F-250 PICKUP V8 351 G 1984 FORD F-250 PICKUP V8 351 H 1978-1979 FORD F-250 PICKUP V8 400 S 1981-1982 FORD F-250 PICKUP V8 400 Z 1978-1979 FORD F-350 PICKUP V8 351 H 1980-1984 FORD F-350 PICKUP V8 351 G 1978-1979 FORD F-350 PICKUP V8 400 S 1980-1982 FORD F-350 PICKUP V8 400 Z 1970 FORD FAIRLANE V8 351 H 1970 FORD FAIRLANE V8 351 M 1970 FORD FALCON V8 351 M 1971-1974 FORD GALAXIE 500 V8 351 H 1972-1974 FORD GALAXIE 500 V8 400 S 1972-1974 FORD GRAN TORINO V8 351 H 1976 FORD GRAN TORINO V8 351 H 1972-1974 FORD GRAN TORINO V8 351 Q 1972-1974 FORD GRAN TORINO V8 400 S 1975-1976 FORD GRAN TORINO V8 400 S 1976-1977 FORD GRANADA V8 351 H 1970-1974 FORD LTD V8 351 H 1976-1979 FORD LTD V8 351 H 1972-1974 FORD LTD V8 400 S 1975-1978 FORD LTD V8 400 S 1978-1979 FORD LTD II V8 351 H 1977-1978 FORD LTD II V8 400 S 1971-1973 FORD MUSTANG V8 351 H 1970-1971 FORD MUSTANG V8 351 M 1972-1973 FORD MUSTANG V8 351 Q 1970-1974 FORD RANCH WAGON V8 351 H 1972-1974 FORD RANCH WAGON V8 400 S 1975-1976 FORD RANCH WAGON V8 400 S 1970-1974 FORD RANCHERO V8 351 H 1976-1979 FORD RANCHERO V8 351 H 1970-1971 FORD RANCHERO V8 351 M 1972-1974 FORD RANCHERO V8 351 Q 1973-1974 FORD RANCHERO V8 400 S 1975-1978 FORD RANCHERO V8 400 S 1978-1979 FORD THUNDERBIRD V8 351 H 1977-1978 FORD THUNDERBIRD V8 400 S 1970-1974 FORD TORINO V8 351 H 1976 FORD TORINO V8 351 H 1970-1971 FORD TORINO V8 351 M 1972-1974 FORD TORINO V8 351 Q 1973-1974 FORD TORINO V8 400 S 1975-1976 FORD TORINO V8 400 S 1978-1979 LINCOLN CONTINENTAL V8 400 S 1978-1979 LINCOLN MARK V V8 400 S 1971-1973 MERCURY COLONY PARK V8 351 H 1979 MERCURY COLONY PARK V8 351 H 1972-1976 MERCURY COLONY PARK V8 400 S 1971-1974 MERCURY COUGAR V8 351 H 1975-1979 MERCURY COUGAR V8 351 H 1970-1971 MERCURY COUGAR V8 351 M 1972-1974 MERCURY COUGAR V8 351 Q 1974-1978 MERCURY COUGAR V8 400 S 1971 MERCURY CYCLONE V8 351 H 1970-1971 MERCURY CYCLONE V8 351 M 1979 MERCURY GRAND MARQUIS V8 351 H 1976-1978 MERCURY GRAND MARQUIS V8 400 S 1972-1973 MERCURY MARQUIS V8 351 H 1978-1979 MERCURY MARQUIS V8 351 H 1972-1978 MERCURY MARQUIS V8 400 S 1976-1977 MERCURY MONARCH V8 351 H 1971-1974 MERCURY MONTEGO V8 351 H 1975-1976 MERCURY MONTEGO V8 351 H 1970-1971 MERCURY MONTEGO V8 351 M 1972-1974 MERCURY MONTEGO V8 351 Q 1973-1976 MERCURY MONTEGO V8 400 S 1971-1973 MERCURY MONTEREY V8 351 H 1972-1974 MERCURY MONTEREY V8 400 S -
Visit product page →Sadly Robertshaw no longer manufactures the 370 series in all temperatures. The difference between the 370 Series and the 330 Series was the flange diameter. Necessity is the mother of invention so we designed an interface ring that allows you to size up your 330 and get the benefit of high flow.
Fits Mopar, Some Ford, Lincoln, Mercury, AMC L6 Buick Nailhead
Why Robertshaw? Because we make a hi flow pump and its unique three port construction or "balanced sleeve" design equalizes the system pressures above and below the thermostat’s moving valve. Therefore the thermostat is pressure balanced and will respond to system temperatures only. No other thermostat does this.
Other Features of a Robert Shaw Thermostat:
1) Stress-free construction. Robertshaw makes the thermostat's strut assembly from brass, not stainless steel, because brass can be bradded to the housing with heat instead of sledge hammer-like stress. This technique permits two brads per strut. Other manufacturers forcefully attach the struts to the housing with intense, metal-weakening pressure on the struts, binding each strut in only one spot.
2) The Power Pill®. This is the heart of a Robertshaw thermostat. It detects minute changes in the temperature of the coolant, and quickly activates a precision-engineered stem or piston to open and close the thermostat valve.
3) One-piece bypass poppet. With other thermostats, the bypass valve stem is welded on. The weld tends to fail under stress. To eliminate this problem, Robertshaw manufactures the entire copper cup and bypass stem from a single piece of metal.
4) Short-stroke piston. In conventional thermostats, the piston must make a large stroke to open the thermostat far enough for adequate coolant flow. But the long stroke compromises durability. Robertshaw engineers achieved a shorter stroke with a uniquely-designed flange and poppet. This design increases the longevity of the thermostat, yet still allows adequate coolant circulation.
5) Contoured strut. Making the strut assembly from brass instead of steel provides another benefit: brass, being more malleable than steel, can be precisely formed to maximize coolant flow.
6) Uniform quality. Robertshaw builds all thermostats to OEM standards -- so your replacement thermostat is identical to those used in new Fords, Chryslers, and other cars. The Power Pill At the heart of a Robertshaw thermostat is the power pill. Its job: to detect minute changes in the temperature of the coolant, and to quickly activate a precision-engineered piston that opens and closes the thermostat valve. Compared to the thermal elements in some thermostats, Robertshaw's Power Pill® has major advantages:
1) Rapid response. The Power Pill's piston is activated by a temperature-sensitive mixture of metallic powder and wax. Some thermostats use an all-wax charge, which responds slowly to temperature changes. Other brands mix copper powder with the wax for faster response, but the copper quickly separates from the wax. Robertshaw developed a process to maintain suspension of the copper powder in the wax, so the fast response doesn't deteriorate and the thermostat will not "stick-open" to cause the engine to run cool.
2) Reliable performance. Most manufacturers use a one-piece rubber diaphragm to seal the charge and drive the piston. If the rubber part ruptures, the thermostat fails. Robertshaw uses two separate parts: a diaphragm to seal the wax, and a stem seat or plug that drives the piston. Rubber material for each part is formulated especially to meet each part's unique requirements. Wear or damage to the stem seat still allows the thermostat to operate satisfactorily.
3) Precise performance. Every Robertshaw Power Pill is calibrated to bring the thermostat's start-to-open temperature within strict tolerances.
Thermostat ApplicationsMake Model Year CID Liters american motors super six, rambler, american, 1961-1962 196 3.2 american motors rambler 1959-1960 196 3.2 american motors american 1959-1968 196 3.2 american motors rebel 1959-1970 250 4.1 buick various 1954-1956 264 4.3 buick special 1957-1961 364
5.9
buick electra gran sport , invicta, lesabre, riviera, skylark wiildcat 1959-1966 401 6.6 buick electra gran sport , invicta, lesabre, riviera, wiildcat 1963-1966 425 7.0
buick century roadmaster, skylark, super 1953-1956 322 5.3 cadillac deville. eldorado 1953-1962 331 5.4 cadillac series 60 fleetwood 1950-1964 331 5.4 cadillac series 61 1950-1951 331 5.4 cadillac series 62 1952-1962 331 5.4 cadillac series 70 fleetwood eldorado 1958-1962 365 6.0 chevrolet g20 van 1983-1993 379 6.2 chevrolet g30 van 1983-1993 379 6.2 chevrolet k10 pickup 1982-1986 379 6.2 chevrolet k10 suburban 1982-1986 379 6.2 chevrolet p20 van 1982-1989 379 6.2 chevrolet p30 van 1982-1993 379 6.2 chevrolet r10 pickup 1987 379 6.2 chevrolet r10 suburban 1987-1988 379 6.2 chevrolet r20 pickup 1987-1988 379 6.2 chevrolet r20 suburban 1987-1988 379 6.2 chevrolet r30 pickup 1987-1988 379 6.2 chevrolet v10 pickup 1987 chevrolet v10 suburban 1987-1988 379 6.2 chevrolet v20 pickup 1987 379 6.2 chevrolet v20 suburban 1987-1988 379 6.2 chevrolet v30 pickup 1987-1988 379 6.2 chrysler cordoba 1975-1979 318 5.2 chrysler lebaron 1977-1979 318 5.2 chrysler 300 1959-1971 413 6.8 chrysler imperial 1959-1975 413 6.8 chrysler town & country 1959-1979 413 6.8 chrysler new yorker 1959-1980 413 6.8 chrysler newport 1959-1980 413 6.8 dodge a100 1967 273 4.5 dodge aspen 1976-1978 318 5.2 dodge b100 van 1974-1978 360 5.9 dodge b200 van 1974-1978 440 7.2 dodge b300 van 1975-1978 318 5.2 dodge cb300 1975-1978 318 5.2 dodge challenger 1970-1974 318 5.2 dodge charger 1967-1968 273 4.5 dodge charger 1969-1978 383 6.3 dodge coronet 1957-1968 230 3.8 dodge coronet 1969-1976 383 6.3 dodge d100 pickup 1968-1978 383 6.3 dodge d150 pickup 1977-1978 318 5.2 dodge d200 pickup 1968 383 6.3 dodge d200 pickup 1969-1978 383 6.3 dodge d300 pickup 1968-1978 383 6.3 dodge d450 pickup 1978 360 5.9 dodge dart 1968-1976 273 4.5 dodge diplomat 1978 318 5.2 dodge m300 1974 440 7.2 dodge m350 1974 318 5.2 dodge magnum 1978 318 5.2 dodge magnum 1978 400 6.6 dodge monaco 1967-1978 426 7.0 dodge polara 1967-1973 426 7.0 dodge ramcharger 1974-1978 440 7.2 dodge royal monaco 1975-1977 360 5.9 dodge truck 1958-1959 230 3.8 dodge w100 pickup 1968-1977 383 6.3 dodge w150 pickup 1978 318 5.2 dodge w150 pickup 1978 360 5.9 dodge w150 pickup 1978 400 6.6 dodge w150 pickup 1978 440 7.2 dodge w200 pickup 1976-1978 318 5.2 dodge w200 pickup 1975-1978 360 5.9 dodge w200 pickup 1969-1970 383 6.3 dodge w200 pickup 19761978 400 6.6 dodge w200 pickup 1974 440 7.2 dodge w200 pickup 1978 440 7.2 dodge w300 pickup 1976-1978 318 5.2 dodge w300 pickup 1975-1978 360 5.9 dodge w300 pickup 1968-1969 383 6.3 dodge w300 pickup 1976-1978 400 6.6 dodge w300 pickup 1978 440 7.2 dodge wayfarer 1950 230 3.8 ford club 1955-1964 223 3.7 ford country sedan 1964-1967 200 3.3 ford country sedan 1954-1964 223 3.7 ford country sedan 1954 256 4.2 ford country sedan 1956-1957 272 4.5 ford country sedan 1959-1962 292 4.8 ford country sedan 1966-1967 352 5.8 ford country sedan 1961-1966 390 6.4 ford country sedan 1964-1966 427 7.0 ford country squire 1964-1967 200 3.3 ford country squire 1954-1964 223 3.7 ford country squire 1954 239 3.9 ford country squire 1954 256 4.2 ford country squire 1956-1957 272 4.5 ford country squire 1959-1962 292 4.8 ford country squire 1965-1967 352 5.8 ford country squire 1963-1964 390 6.4 ford country squire 1964 427 7.0 ford country squire 1966 427 7.0 ford courier sedan delivery 1954-1960 239 3.9 ford crestline 1954 223 3.7 ford custom 1964 223 3.7 ford custom 1966-1967 352 5.8 ford custom 1964 390 6.4 ford custom 1966 427 7.0 ford custom 300 1959 223 3.7 ford custom 300 1958-1959 292 4.8 ford customline 1954-1956 239 3.9 ford del rio wagon 1957-1958 223 3.7 ford f series 1954-1959 239 3.9 ford f-100 pickup 1962-1964 223 3.7 ford f-100 pickup 1961-1964 292 4.8 ford f-100 pickup 1966-1967 352 5.8 ford f-250 pickup 1962-1964 223 3.7 ford f-250 pickup 1960-1964 292 4.8 ford f-250 pickup 1967 352 5.8 ford f-350 pickup 1961-1964 223 3.7 ford f-350 pickup 1960-1964 292 4.8 ford f-350 pickup 1966-1967 352 5.8 ford fairlane 1966-1968 200 3.3 ford fairlane 1956-1962 223 3.7 ford fairlane 1956-1957 272 4.5 ford fairlane 1959-1961 292 4.8 ford fairlane 1964 390 6.4 ford fairlane 1966 390 6.4 ford fairlane 1965-1966 427 7.0 ford falcon 1964-1968 200 3.3 ford falcon sedan delivery 1965 200 3.3 ford ford 300 1963 223 3.7 ford galaxie 1959-1964 223 3.7 ford galaxie 1960-1962 292 4.8 ford galaxie 1965-1967 352 5.8 ford galaxie 1963-1964 390 6.4 ford galaxie 1966 427 7.0 ford galaxie 1966 428 7.0 ford ltd 1967 352 5.8 ford mainline 1954-1956 239 3.9 ford mustang 1965-1968 200 3.3 ford park lane wagon 1956 223 3.7 ford ranch wagon 1966-1967 200 3.3 ford ranch wagon 1954-1964 223 3.7 ford ranch wagon 1954 256 4.2 ford ranch wagon 1956-1957 272 4.5 ford ranch wagon 1959-1962 292 4.8 ford ranch wagon 1965-1967 352 5.8 ford ranch wagon 1963-1966 390 6.4 ford ranch wagon 1964 427 7.0 ford ranch wagon 1966 427 7.0 ford ranchero 1965-1968 200 3.3 ford ranchero 1957-1959 223 3.7 ford ranchero 1958-1959 292 4.8 ford skyliner 1954-1959 239 3.9 ford starliner 1960-1981 292 4.8 ford sunliner 1954-1961 223 3.7 ford sunliner 1963-1964 223 3.7 ford sunliner 1954 239 3.9 ford sunliner 1954 256 4.2 ford sunliner 1956-1957 272 4.5 ford sunliner 1959-1962 292 4.8 ford sunliner 1963-1964 390 6.4 ford thunderbird 1956-1958 292 4.8 ford thunderbird 1963-1966 390 6.4 ford thunderbird 1963-1966 427 7.0 ford victoria 1954-1964 223 3.7 ford victoria 1954 239 3.9 ford victoria 1954 256 4.2 ford victoria 1956-1957 272 4.5 ford victoria 1959-1962 292 4.8 ford victoria 1964 390 6.4 gmc g25/g2500 van 1984-1993 379 6.2 gmc g35/g3500 van 1984-1993 379 6.2 gmc p25/p2500 van 1983-1988 379 6.2 gmc p35/p3500 van 1983-1988 379 6.2 gmc r1500 suburban 1988-1992 379 6.2 gmc r2500 pickup 1987-1989 379 6.2 gmc r2500 suburban 1988-1991 379 6.2 gmc r3500 pickup 1988-1991 379 6.2 gmc v1500 suburban 1988-1991 379 6.2 gmc v2500 pickup 1987 379 6.2 gmc v2500 suburban 1988-1991 379 6.2 gmc v3500 pickup 1988-1991 379 6.2 mercury breezeway 1966 390 6.4 mercury colony park 1961-1962 292 4.8 mercury colony park 1962 352 5.8 mercury colony park 1963-1966 390 6.4 mercury colony park 1966 410 6.7 mercury colony park 1966 427 7.0 mercury colony park 1959 430 7.0 mercury comet 1966 427 7.0 mercury commuter 1961 223 3.7 mercury commuter 1957 312 5.1 mercury commuter 1961 352 5.8 mercury commuter 1961-1966 390 6.4 mercury commuter 1966 427 7.0 mercury custom 1954 256 4.2 mercury custom 1955 292 4.8 mercury custom 1956 312 5.1 mercury marauder 1964-1966 390 6.4 mercury mercury s-55 1966 390 6.4 mercury meteor 1961 292 4.8 mercury meteor 1961 352 5.8 mercury meteor 1961 390 6.4 mercury montclair 1956 312 5.1 mercury montclair 1957-1966 312 5.1 mercury monterey 1954 256 4.2 mercury monterey 1955 292 4.8 mercury monterey 1961-1962 292 4.8 mercury monterey 1957 312 5.1 mercury monterey 1961-1962 352 5.8 mercury monterey 1963-1966 390 6.4 mercury monterey 1966 410 6.7 mercury monterey 1966 427 7 mercury park lane 1965-1966 390 6.4 mercury park lane 1966 427 7 mercury park lane 1959 430 7 mercury voyager 1959 430 7 plymouth barracuda 1965-1974 273 4.5 plymouth belvedere 1963-1970 318 5.2 plymouth cuda 1970-1974 340 5.6 plymouth deluxe 1949-1950 218 3.6 plymouth fury 1965-1978 273 4.5 plymouth fury i 1968-1974 383 6.3 plymouth fury ii 1968-1974 383 6.3 plymouth fury iii 1968-1974 383 6.3 plymouth gran fury 1972-1977 440 7.2 plymouth gtx 1967 440 7.2 plymouth pb100 van 1976-1978 318 5.2 plymouth pb200 van 1975-1978 360 5.9 plymouth pb300 van 1975-1978 360 5.9 plymouth roadrunner 1968-1975 383 6.3 plymouth satellite 1965-1974 318 5.2 plymouth savoy 1963-1964 318 5.2 plymouth scamp 1972-1983 318 5.2 plymouth trailduster 1976-1978 318 5.2 plymouth trailduster 1976-1978 360 5.9 plymouth trailduster 1977-1978 400 6.6 plymouth trailduster 1974 440 7.2 plymouth vip 1967 440 7.2
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