The Alliant Power AP54803 is a common rail fuel injector bank kit for 2019–2023 GM L5D Duramax applications. Alliant’s Fuel Injector Kit provides components used to service or replace a fuel injector assembly.

Features & Benefits

• Alliant Power Common Rail Fuel Injector Bank Kit (Alliant P/N AP54803)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 12696967 / 12698553 / 12718814
• Backed by Alliant Power’s manufacturer warranty

Included in the Box

• 4x Premium New Fuel injectors with seals
• 2x High Pressure Injector Lines for Cylinders (1 & 3 or 6 & 8)
• 2x High Pressure Injector Lines for Cylinders (2 & 4 or 5 & 7)
• 1x EGR Gasket OE# 12680216
• 1x EGR Gasket OE# 12688014
• 1x EGR Gasket OE# 12677819
• 8x Return Line Washer Seals OE# 12654651

Application

• Chevrolet Silverado 4500 HD / Silverado 5500 HD / Silverado 6500 HD (2019–2020)
• Chevrolet Silverado 4500 HD / Silverado 5500 HD / Silverado 6500 HD (2019–2023)
• Alliant Power lists additional vehicle applications for this part number

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

Cross-Reference / Replaces

• General Motors: 12696967, 12698553, 12718814
• Navistar: 6040630C9, 6040630C91, 6040630C92, 6040630C93, 6040630C94, 6040630C95, 6040630C96, 6040630C97
• Alliant Power: AP54803

Warranty: Alliant Power’s warranty policy (rev. Aug 2025) covers new fuel injectors for 36 months and remanufactured injectors for 24 months, both with unlimited miles. Alliant’s listing for this part number describes it as both new and remanufactured, so contact us to confirm condition and warranty term before ordering if it matters for your repair.

A refundable core charge is added at checkout and refunded when your old injectors are returned per our core terms.