The Alliant Power AP57024 fuel contamination kit is designed to restore the fuel system of 2020–2022 GM 3.0L LM2 Duramax engines after a contamination event such as DEF, gasoline, water or debris entering the fuel system (per Alliant Power). It packages the pump kit, injector kits, fuel rail, fuel cooler, in-tank pump, filter and related parts in one box.

Features & Benefits

• Alliant Power Fuel Contamination Kit (Alliant P/N AP57024)
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Included in the Box

• 1x Fuel Injection Pump Kit - Part # AP55216 that includes OE Equivalent# 40009053
• 3x Fuel Injectors Kits Cyl 1,2,4 -Part # AP55129 that includes OE Equivalent# 55506244
• 3x Fuel Injectors Kits Cyl 3,5,6 -Part# AP55130 that includes OE Equivalent# 55506244
• 1x Fuel Cooler Assembly OE Equivalent# 84740502
• 1x Fuel Rail w/ Pressure Sensor & Relief Valve OE Equivalent# 55505909
• 1x Fuel Pump in Tank OE Equivalent# 86507850
• 1x Fuel Filter Assembly OE Equivalent# 13543066
• 1x Fuel Return Line OE Equivalent# 55515929
• 1x EGR Pipe Gasket OE Equivalent# 55497083
• 1x Seal OE Equivalent# 55496593

Application

• Chevrolet Silverado 1500 / GMC Sierra 1500 (2020–2022)
• Chevrolet Silverado 1500 LTD / GMC Sierra 1500 Limited (2022)
• Chevrolet Tahoe / Suburban and GMC Yukon / Yukon XL (2021–2022), as listed by Alliant Power

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

Warranty: Alliant Power’s warranty policy (rev. Aug 2025) provides a standard 24-month, unlimited-mileage warranty; new fuel injectors are covered for 36 months with unlimited miles, parts & labor. This kit is not on Alliant’s published 3-year contamination-kit list, so its other components carry the standard 24-month term.

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