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The Perkins 1004.4 water pump is the engine coolant circulation pump used on the Perkins Phaser 4-cylinder series. It moves coolant through the block and radiator to prevent overheating.
Common Water Pump Part Numbers for Perkins 1004.4
Several aftermarket listings show these compatible numbers (fitment depends on serial number / build spec):
4131A046 – common replacement for .4T �
MyMROmarts +1
U5MW0157 / U5MW0156 – used on some -4T versions �
AS Parts
4131A064 / 4131A061 – listed in multi-fit aftermarket catalogs �
Walmart.com
Signs Your Water Pump Needs Replacement
Coolant leak from front of engine
Bearing noise / grinding
Engine overheating
Fan pulley wobble
Rust stains near pump weep hole