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Thumbnail Filmstrip of LB7 Duramax Reman Fuel Injector Alliant Power AP55502 Images
The Alliant Power AP55502 is a remanufactured common rail fuel injector for 2001–2004 GM LB7 Duramax applications. Alliant’s Common Rail Fuel Injector delivers the precise fuel quantity and spray pattern required for efficient combustion and proper engine operation.
Features & Benefits
- Remanufactured Alliant Power Common Rail Fuel Injector (Alliant P/N AP55502)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 97208074 / 97720604 / 97720661
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
- 1x Reman Injector
- 1x Chamber Nozzle Tip Gasket
- 2x Injector Sealing O-ring
Application
- Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2004)
- GMC Sierra 3500 / Sierra 2500 HD (2001–2004)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- General Motors: 97208074, 97720604, 97720661, 97729095
- Bosch: 04451200008, 0445120008, 0986435502
- Delphi: EX631045
- Isuzu: 2-90000-913-0, 2-90071-300-1, 9772060661
- Alliant Power: AP55502
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
A refundable core charge is added at checkout and refunded when your old injector is returned per our core terms.
The Alliant Power AP55502 is a remanufactured common rail fuel injector for 2001–2004 GM LB7 Duramax applications. Alliant’s Common Rail Fuel Injector delivers the precise fuel quantity and spray pattern required for efficient combustion and proper engine operation.
Features & Benefits
Remanufactured Alliant Power Common Rail Fuel Injector (Alliant P/N AP55502)
Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
Direct replacement for 97208074 / 97720604 / 97720661
Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
1x Reman Injector
1x Chamber Nozzle Tip Gasket
2x Injector Sealing O-ring
Application
Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2004)
GMC Sierra 3500 / Sierra 2500 HD (2001–2004)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
General Motors: 97208074, 97720604, 97720661, 97729095
Bosch: 04451200008, 0445120008, 0986435502
Delphi: EX631045
Isuzu: 2-90000-913-0, 2-90071-300-1, 9772060661
Alliant Power: AP55502
Wa[...]
The Alliant Power AP55502 is a remanufactured common rail fuel injector for 2001–2004 GM LB7 Duramax applications. Alliant’s Common Rail Fuel Injector delivers the precise fuel quantity and spray pattern required for efficient combustion and proper engine operation.
Features & Benefits
- Remanufactured Alliant Power Common Rail Fuel Injector (Alliant P/N AP55502)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 97208074 / 97720604 / 97720661
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
- 1x Reman Injector
- 1x Chamber Nozzle Tip Gasket
- 2x Injector Sealing O-ring
Application
- Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2004)
- GMC Sierra 3500 / Sierra 2500 HD (2001–2004)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- General Motors: 97208074, 97720604, 97720661, 97729095
- Bosch: 04451200008, 0445120008, 0986435502
- Delphi: EX631045
- Isuzu: 2-90000-913-0, 2-90071-300-1, 9772060661
- Alliant Power: AP55502
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
A refundable core charge is added at checkout and refunded when your old injector is returned per our core terms.