The Alliant Power AP54950 is a remanufactured High-Pressure fuel injection pump for 2017–2025 GM L5P/L5D Duramax applications. Alliant’s Diesel Fuel Injector Pump supplies the pressure and fuel flow required for proper fuel injection and engine operation.

Features & Benefits

• Remanufactured Alliant Power High-Pressure Fuel Injection Pump (Alliant P/N AP54950)
• Direct replacement for 12676904 / 12678993 / 12701094
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Application

• Chevrolet Silverado 2500 HD / Silverado 3500 HD (2017–2025)
• GMC Sierra 2500 HD / Sierra 3500 HD (2017–2025)
• Chevrolet Silverado 4500 HD / Silverado 5500 HD / Silverado 6500 HD (2019–2025)

Always verify fitment against your VIN, engine, and OE part number before ordering.

Cross-Reference / Replaces

• General Motors: 12676904, 12678993, 12701094, 12731367, 12731368, 12720215
• Navistar: 6040608C9, 6040608C91
• Denso: 294050-0701
• Stanadyne: 608990
• Alliant Power: AP54950

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 pump is returned per our core terms.