Friday, June 15, 2018

Cummins 4BT Water Pump

Telltale of a Leaking Water Pump 


During the morning engine check I found that the water pump's shaft seal had started leaking.

I replaced the pump with a used spare we had on board. A few days later I purchased a new one at NAPA for $54.

Trying to find a water pump for your 4BT3.9M? At an autopart's store tell them you've got a 1991 Dodge D250 w/ 5.9 Cummins turbo.

The Cummins parts catalog for the 4BT3.9 lists the following for water pumps: 3802004 and 3913432.

3802004 crosses to a NWP 557145 in NAPA numbers.

3913432 crosses to a TFP 41181 in NAPA numbers.

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