Arrow Fat Left Icon Arrow Fat Right Icon Arrow Right Icon Cart Icon Close Circle Icon Expand Arrows Icon Hamburger Icon Information Icon Down Arrow Icon Mail Icon Mini Cart Icon Person Icon Ruler Icon Search Icon Shirt Icon Triangle Icon Bag Icon Play Video

1689 1955-1963 Chevy 235 261 Inline 6 water pump

$139.00

1689 1955-1963 Chevy 235 261 Inline 6 water pump

$139.00

The tri-fives can run hot so Flowkooler designed a high flow water pump with a CNC machined billet impeller to increased vane count and a reduced casting-to-impeller vane clearance.  It achieves greater flow rates, higher head pressure and a more efficient flow. The impeller color is due to Type II Class II military grade surface coating which protects against corrosive fluids. 

FlowKooler introduced the first hi flow pumps for the inline 6 and continues to improve impeller design. Why is increased flow so important to cooling a hot 235 or 265 engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.

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

General Specifications:
Type of Material of Pump Body Cast Iron
Number of Blades on Impeller 10 CNC Aluminum
Direction of Rotation CW
Hub Height 5-1/4"
Hose Connections: 1st 2nd
Gender F F
Diameter 11/16" 11/16"
Threaded Yes Yes
Other Special Features:
  • 10 vane CNC Machined Aluminum impeller 
  • Impeller vanes at right angle to shaft (bi directional; application dictates rotation)
  • Impeller protected with a military grade Type II anodized surface coating
  • Fits 235 & 261 L6 Chevys from 1955-62
  • Alternative Parts Numbers 3741033, 3757231, 3774186, 3836159
Parts Contained in Box:
Mounting Gaskets, Installation Sheet, FlowKooler Decal
Make Model Year Block CID Liters
CHEVROLET BEL AIR 57-55 L6 235 3.8L
CHEVROLET BEL AIR 62-55 L6 235 3.8L
CHEVROLET BISCAYNE 62-58 L6 235 3.8L
CHEVROLET C10 PICKUP 62-61 L6 235 3.8L
CHEVROLET C20 PICKUP 62-61 L6 235 3.8L
CHEVROLET C30 PICKUP 62-61 L6 235 3.8L
CHEVROLET CORVETTE 1955 L6 235 3.8L
CHEVROLET DEL RAY 1958 L6 235 3.8L
CHEVROLET IMPALA 62-59 L6 235 3.8L
CHEVROLET K10 PICKUP 62-61 L6 235 3.8L
CHEVROLET K10 PICKUP 62-61 L6 261 4.3L
CHEVROLET K20 PICKUP 62-61 L6 261 4.3L
CHEVROLET K20 PICKUP 63-61 L6 235 3.8L
CHEVROLET ONE FIFTY SERIES 57-55 L6 235 3.8L
CHEVROLET P10 SERIES 1962 L6 235 3.8L
CHEVROLET P20 SERIES 1961 L6 235 3.8L
CHEVROLET P30 SERIES 1961 L6 235 3.8L
CHEVROLET SUBURBAN 62-61 L6 235 3.8L
CHEVROLET TRUCK 58-55 L6 261 4.3L
CHEVROLET TWO TEN SERIES 57-55 L6 235 3.8L