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FlowKooler pumps patented impeller designs help stop engines from overheating and reduces engine temperature up to 30 degrees by doubling the flow of coolant and building system pressure.

Home / Products / 1781CI 1973-1991 Jeep AMC 304 360 401 water pump

1781CI 1973-1991 Jeep AMC 304 360 401 water pump

$141.78

1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
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1781CI 1973-1991 Jeep AMC 304 360 401 water pump

$141.78

Flowkooler high flow pump 1781 has a CNC machined billet impeller designed with an increased vane count and a reduced impeller clearance to achieve greater flow rates, higher block pressure. A Type II Class II military grade anodize surface coating protects against corrosive fluids. 

We developed this hi flow pump because Jeeps tend to overheating in  traffic and on the trail. Tight engine space and limited airflow plague the cooling system but it has been proven time and time again that reducing the cycle time between the heat source and the heat sink drops engine temperatures for slow speed rock crawling and stop and go traffic.

From 0-3,300 RPM…Nothing Beats a FlowKooler!

General Specifications:
Type of Material of Pump Body Cast Iron
Number of Blades on Impeller 8 CNC Aluminum
Direction of Rotation CW
Fan Hub Working Height 4-13/16"
Shaft Diameter 5/8"
Inlet Outside Diameter 1 7/8"
Hose Connections: 1st 2nd
Gender M M
Diameter 7/8" 7/8"
Threaded NA NA
Other Special Features:
  • CNC Machined aluminum impeller with 16 vanes
  • Protected with a military grade Type II Class II surface coating
  • Impeller chamber is directional to clockwise rotation
  • Lower radiator hose exits left front side (driver's side)
  • Fits American Motors, Jeep products
  • Alternative Part Numbers 3227694, 3234411, 3234427, 8122306, 8125131, EA259, F8125131, J3227694, J3234427, J8122306, J8125131, JR775050
Parts Contained in Box:
Mounting Gaskets, Installation Sheet, FlowKooler Decal
Make Model Year Block CID Liters
AMC AMBASSADOR 74-73 V8 304 5.0L
AMC AMBASSADOR 74-73 V8 360 5.9L
AMC AMBASSADOR 74-73 V8 401 6.6L
AMC AMX 74-73 V8 304 5.0L
AMC AMX 74-73 V8 360 5.9L
AMC AMX 74-73 V8 401 6.6L
AMC AMX 79-78 V8 304 5.0L
AMC CONCORD 79-78 V8 304 5.0L
AMC GREMLIN 76-73 V8 304 5.0L
AMC HORNET 77-73 V8 304 5.0L
AMC HORNET 77-73 V8 360 5.9L
AMC JAVELIN 74-73 V8 304 5.0L
AMC JAVELIN 74-73 V8 360 5.9L
AMC JAVELIN 74-73 V8 401 6.6L
AMC MATADOR 76-73 V8 401 6.6L
AMC MATADOR 77-73 V8 304 5.0L
AMC MATADOR 78-73 V8 360 5.9L
AMC PACER 79-78 V8 304 5.0L
AMC SPIRIT 1979 V8 304 5.0L
JEEP CHEROKEE 78-74 V8 401 6.6L
JEEP CHEROKEE 83-74 V8 360 5.9L
JEEP CJ SERIES 81-73 V8 304 5.0L
JEEP COMMANDO 1973 V8 304 5.0L
JEEP DJ SERIES 1974 V8 304 5.0L
JEEP GRAND WAGONEER 91-84 V8 360 5.9L
JEEP J SERIES PICKUP 78-74 V8 401 6.6L
JEEP J SERIES PICKUP 88-73 V8 360 5.9L
JEEP JEEPSTER 1973 V8 304 5.0L
JEEP WAGONEER 78-74 V8 401 6.6L
JEEP WAGONEER 83-73 V8 360 5.9L

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1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
1781CI 1973-1991 Jeep AMC 304 360 401 water pump
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