- MHD Part #: AP54820
- |
- Brand: ALLIANT POWER
Alliant Power AP54820 L5P Fuel Contamination Kit
The Alliant Power AP54820 L5P Fuel Contamination Kit replaces the complete high‑pressure fuel system on GM 6.6L Duramax L5P engines. It includes the injection pump, left/right rails, eight injectors, lines, gaskets, and seals to remediate contamination. OE or OE‑equivalent validated components are 15‑point tested and USA‑assembled, backed by a 2‑year, unlimited‑mile warranty to restore performance
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Complete L5P Fuel System Replacement
The Alliant Power AP54820 Fuel Contamination Kit is a one-box solution for GM 6.6L Duramax L5P engines used in Chevy/GMC 2500/3500HD applications. Engineered to resolve contamination events, the kit replaces all critical high-pressure components in a single service: 1 injection pump, left and right fuel rails, eight fuel injectors, eight injector feed lines, feed and return lines, plus all required gaskets and seals. Each component is end-of-line tested at 15 points for consistency and reliability. Assembled in the USA in an ISO 9001:2015 certified facility, the kit is backed by a two-year, unlimited-mile warranty.
OE-Validated Components, One-Box Efficiency
Using 100% genuine OE or OE-equivalent validated parts, AP54820 restores proper rail pressure control and injector performance while reducing the risk of recontamination from partially reused hardware. Preformed lines and included seals streamline installation, minimizing sourcing time and helping fleets return trucks to service faster. Primary fitment is commonly listed for 2017–2019 L5P platforms, with some sources indicating coverage that may extend beyond these years; always confirm by VIN or calibration before ordering. Shipping weight is approximately 45 lb; carton dimensions are 23.25 in L x 20 in W x 18.75 in H to aid receiving and service planning.
Product Features
- Complete high-pressure fuel system replacement eliminates residual contamination risk and restores proper fueling.
- Includes injection pump, rails, eight injectors, and all lines and seals to reduce parts sourcing time.
- OE or OE‑equivalent validated components ensure correct fit and performance for L5P applications.
- 15‑point end‑of‑line testing of each component helps ensure consistent pressure control and metering.
- USA assembly in an ISO 9001:2015 facility supports process quality and repeatable results.
- Two‑year, unlimited‑mile warranty provides confidence for fleet service intervals and minimizes comebacks.
- Preformed feed/return and injector lines simplify installation and help reduce downtime.
Product Specifications
| Brand: | Alliant Power |
|---|---|
| Part Number: | AP54820 |
| SPN: | AP54820 |
| Product Type: | Fuel Contamination Repair Kit |
| Category: | Body & Chassis |
| Sub-Category: | Fuel System |
| Engine: | GM Duramax 6.6L L5P |
| Vehicle Make: | Chevrolet / GMC |
| Applications: | 2500HD / 3500HD (verify by VIN) |
| Fuel Type: | Diesel |
| Number of Injectors: | 8 |
| Number of Fuel Rails: | 2 (left and right) |
| Kit Contents: | Injection pump; left and right fuel rails; 8 fuel injectors; 8 injector feed lines; feed and return lines; gaskets and seals |
|---|---|
| Testing: | 15-point end-of-line component testing |
| Quality Standard: | ISO 9001:2015 (assembly facility) |
| Country of Assembly: | USA |
| Warranty: | 24 months, unlimited miles |
| Shipping Weight: | 45 lb |
| Package Dimensions (L x W x H): | 23.25 in x 20 in x 18.75 in |
| Shipping Weight: | 45.00 (lbs) |
| Shipping Height: | 18.75 (in) |
| Shipping Width: | 20.00 (in) |
| Shipping Length: | 23.25 (in) |
| Name | Interchange |
|---|
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