The Alliant Power AP54800 is a remanufactured common rail fuel injector for 2017–2023 GM L5P Duramax applications.

Features & Benefits

• Remanufactured Alliant Power Common Rail Fuel Injector (Alliant P/N AP54800)
• 100% New Nozzles, all wearable parts as well as critical components are replaced with OE or OE equivalent components
• Assembled and built proudly in the USA within Alliant Power's ISO 9001:2015 Certified Facility
• Direct replacement for 12674615 / 12678992 / 12696966
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Included in the Box

• 1x Reman Injector
• 1x Chamber Nozzle Tip Gasket
• 1x Injector Sealing O-ring

Application

• Chevrolet Silverado 2500 HD / Silverado 3500 HD (2017–2023)
• GMC Sierra 2500 HD / Sierra 3500 HD (2017–2023)

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

Cross-Reference / Replaces

• General Motors: 12674615, 12678992, 12696966, 12698552
• Alliant Power: AP54800

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.