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Thumbnail Filmstrip of 2020-2023 6.6L L5P Duramax Fuel Contamination Kit with DCR Pump Alliant AP57026 Images
The Alliant Power AP57026 is a fuel system contamination kit for 2020–2023 GM 6.6L L5P Duramax pickups. It combines eight new common rail injectors with a new DCR fuel injection pump plus the lines, gaskets, seals and filter needed for a complete contamination repair.
Features & Benefits
- Alliant Power Fuel Contamination Kit with DCR Pump (Alliant P/N AP57026)
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
- 8x New Common Rail Injectors OE Equivalent # 12698552
- 1x New Fuel Injection Pump DCR Part # 608990
- 1x Throttle Body Mounting Gasket OE Equivalent # 12665248
- 1x EGR Valve at Manifold Gasket OE Equivalent # 12677819
- 1x Gasket turbocharger OE Equivalent # 12651147
- 2x Intake Manifold Gaskets OE Equivalent # 12642410
- 2x EGR Coolant Pipe Seals OE Equivalent # 12648141
- 1x Water Pipe Gasket OE Equivalent # 12643771
- 2x Thermostat Housing Gaskets OE Equivalent # 12643149
- 1x Coolant Pipe Seal OE Equivalent # 12648140
- 1x Coolant Pipe Seal OE Equivalent # 12658352
- 1x Diesel Fuel Filter OE Equivalent # PU9012/1Z
- 1x Line - Return From Pump OE Equivalent # 12673878
- 1x Line - Return From Injector Lh OE Equivalent # 12684288
- 1x Line - Return From Injector Rh OE Equivalent # 12684289
- 1x Fuel Cooler OE Equivalent # 84740502
- 1x EGR Pipe Gasket OE Equivalent # 12680216
- 1x EGR Valve Gasket OE Equivalent # 12688014
- 1x Fuel Injection Pump Nut OE Equivalent # 11611990
- 1x Rail OE Equivalent # 12686810
- 1x Rail OE Equivalent # 12686808
- 4x HP Lines OE Equivalent # 12720156
- 4x HP Lines OE Equivalent # 12720157
- 1x Aftertreatment Injector OE Equivalent # 12717296
- 8x Bolts OE Equivalent # 11611340
Application
- GM 6.6L L5P Duramax pickups (2020–2023), per 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.
The Alliant Power AP57026 is a fuel system contamination kit for 2020–2023 GM 6.6L L5P Duramax pickups. It combines eight new common rail injectors with a new DCR fuel injection pump plus the lines, gaskets, seals and filter needed for a complete contamination repair.
Features & Benefits
Alliant Power Fuel Contamination Kit with DCR Pump (Alliant P/N AP57026)
Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
8x New Common Rail Injectors OE Equivalent # 12698552
1x New Fuel Injection Pump DCR Part # 608990
1x Throttle Body Mounting Gasket OE Equivalent # 12665248
1x EGR Valve at Manifold Gasket OE Equivalent # 12677819
1x Gasket turbocharger OE Equivalent # 12651147
2x Intake Manifold Gaskets OE Equivalent # 12642410
2x EGR Coolant Pipe Seals OE Equivalent # 12648141
1x Water Pipe Gasket OE Equivalent # 12643771
2x Thermostat Housing Gaskets OE Equivalent # 12643149
1x Coolant Pipe Seal OE Equivalent # 12648140
1x Coolant Pipe Seal OE Equivalent # 12658352
1x Diesel Fuel Filter OE Equivalent # PU9012/1Z
1x Line - Return From Pump OE Equivalent # 12673878
1x Line - Retur[...]
The Alliant Power AP57026 is a fuel system contamination kit for 2020–2023 GM 6.6L L5P Duramax pickups. It combines eight new common rail injectors with a new DCR fuel injection pump plus the lines, gaskets, seals and filter needed for a complete contamination repair.
Features & Benefits
- Alliant Power Fuel Contamination Kit with DCR Pump (Alliant P/N AP57026)
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Included in the Box
- 8x New Common Rail Injectors OE Equivalent # 12698552
- 1x New Fuel Injection Pump DCR Part # 608990
- 1x Throttle Body Mounting Gasket OE Equivalent # 12665248
- 1x EGR Valve at Manifold Gasket OE Equivalent # 12677819
- 1x Gasket turbocharger OE Equivalent # 12651147
- 2x Intake Manifold Gaskets OE Equivalent # 12642410
- 2x EGR Coolant Pipe Seals OE Equivalent # 12648141
- 1x Water Pipe Gasket OE Equivalent # 12643771
- 2x Thermostat Housing Gaskets OE Equivalent # 12643149
- 1x Coolant Pipe Seal OE Equivalent # 12648140
- 1x Coolant Pipe Seal OE Equivalent # 12658352
- 1x Diesel Fuel Filter OE Equivalent # PU9012/1Z
- 1x Line - Return From Pump OE Equivalent # 12673878
- 1x Line - Return From Injector Lh OE Equivalent # 12684288
- 1x Line - Return From Injector Rh OE Equivalent # 12684289
- 1x Fuel Cooler OE Equivalent # 84740502
- 1x EGR Pipe Gasket OE Equivalent # 12680216
- 1x EGR Valve Gasket OE Equivalent # 12688014
- 1x Fuel Injection Pump Nut OE Equivalent # 11611990
- 1x Rail OE Equivalent # 12686810
- 1x Rail OE Equivalent # 12686808
- 4x HP Lines OE Equivalent # 12720156
- 4x HP Lines OE Equivalent # 12720157
- 1x Aftertreatment Injector OE Equivalent # 12717296
- 8x Bolts OE Equivalent # 11611340
Application
- GM 6.6L L5P Duramax pickups (2020–2023), per 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.