Alliant Power AP55202 is a remanufactured fuel injection pump for the 6.6L Duramax LB7. Alliant lists it for 2001 to 2004 Chevrolet Silverado 2500 HD and 3500 and 2001 to 2004 GMC Sierra 2500 HD and 3500.
Alliant lists Bosch 0 986 437 303 (remanufactured) and Bosch 0 445 020 017 (new) as substitutes. Bosch’s own Duramax guide lists those two numbers as the LB7 common rail pump.
Confirm Fitment Before You Order
Call 530-668-0818 with your VIN or engine serial number and we will confirm it is the right part before anything ships.
Specifications
| Part number | AP55202 |
|---|---|
| Brand | Alliant Power |
| Condition | Remanufactured |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 16 lb |
Fits / Applications
- Chevrolet Silverado 2500 HD (2001 to 2004)
- Chevrolet Silverado 3500 (2001 to 2004)
- GMC Sierra 2500 HD (2001 to 2004)
- GMC Sierra 3500 (2001 to 2004)
Part Numbers & Cross Reference
Bosch (remanufactured) 0 986 437 303 · Bosch (new) 0 445 020 017
Frequently Asked Questions
Which trucks does AP55202 fit?
Alliant lists 2001 to 2004 Chevrolet Silverado 2500 HD and 3500 and 2001 to 2004 GMC Sierra 2500 HD and 3500 with the 6.6L Duramax LB7.
What Bosch numbers does AP55202 replace?
Alliant lists Bosch 0 986 437 303 (remanufactured) and 0 445 020 017 (new) as substitutes. Bosch lists both as the LB7 pump.
Ships by UPS to all 50 states, including Alaska and Hawaii. Your rate shows at checkout. A refundable core charge is added at checkout.





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