Chevy GM Stanadyne electronic injection pump latest version model DS4-5521 completely remanufactured and warranted by SSDiesel Supply^TM, a trusted name in 6.5TD solutions. All electronic parts new including the optical sensor.

Fits all 1994-2002 GM 6.5 Turbo Diesels in C/K pick-ups, G/P van (Express and Savana) and cab/chassis combinations such as school buses (except 1994 DS4-5068). And H1 Hummers 1996-2005.

99% of the time, only the PMD fails on these units. If you experience stalling, hesitation, stuttering, poor mileage, or no-start, chances are it is just the PMD failing. Please see our FSD Heat-Sync^TM kit ssd-006 which will solve the chronic failure problem associated with PMD's. If you have already tried a new PMD and you are still experiencing problems, the injection pump must be replaced.

Our reman injection pumps feature all the latest upgrades and a 12 month warranty.

Pump is sold less PMD.

A core deposit of $100 will be required.

Gaskets sold separately, see p/n ssd-5110.

If you have a 94 truck, you MUST check the model of your current pump. If the model is a 5068, only a 5068 can replace it. Please see p/n ssd-5068 also sold by SSDiesel Supply^TM. ALL other 1994 pump models are superceeded by the 5521. 1994 was the only year the 5068 was used, and usually only on 3500 series trucks.

NOTE: THIS PUMP IS SOLD LESS PMD, AS WE DO NOT RECOMMEND THE PMD BEING MOUNTED TO THE PUMP WHERE IT IS DESTINED TO FAIL. Please see our FSD Heat Sync kit p/n ssd-006 if a new PMD is needed. Also available is our "kit" version ssd-5521KIT, which includes this pump, FSD Heat Sync Kit and gasket install kit.