- Part Number: AP57026
- Est. Ship Time: Usually Ships in 1-2 Business Days
SSL SECURE
TRANSACTION
AUTHENTIC
PRODUCTS
GUARANTEED PREMIUM
QUALITY
A+ Rating
The Alliant Power AP57026 Fuel System Contamination Kit is designed for 2020-2023 GM 6.6L Duramax L5P pickup trucks and provides a complete solution for repairing a contaminated diesel fuel system.
This kit includes all essential high-pressure fuel system components along with a DCR high pressure fuel pump upgrade to restore proper fuel delivery and improve long-term reliability.
Fuel contamination can occur from water intrusion, diesel exhaust fluid (DEF) entering the fuel tank, or debris circulating through the fuel system. When contamination occurs, it can damage injectors, fuel rails, and high-pressure fuel pumps, requiring replacement of affected components.
If your fuel system has experienced contamination, replacing all affected components is critical to prevent repeat failures.
Learn more about diesel fuel contamination repair kits
Why Fuel Contamination Causes Major Diesel Fuel System Damage
- Metal debris from pump failure circulates through the entire fuel system
- DEF contamination destroys injectors and fuel pumps
- Water contamination reduces fuel lubrication
- Modern high-pressure diesel systems operate with extremely tight tolerances
Features and Benefits
- DCR fuel pump included for improved reliability
- Injectors and pump are 100% end-of-line tested
- Includes essential components to restore the entire high-pressure fuel system
- Designed specifically for 2020-2023 Duramax L5P trucks
- Engineered for durability and consistent fuel pressure
Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Chevrolet Silverado 2500HD | 6.6L Duramax L5P | 2020-2023 |
| Chevrolet Silverado 3500HD | 6.6L Duramax L5P | 2020-2023 |
| GMC Sierra 2500HD | 6.6L Duramax L5P | 2020-2023 |
| GMC Sierra 3500HD | 6.6L Duramax L5P | 2020-2023 |
Related Duramax Fuel System Parts
Symptoms of Fuel System Contamination
- P0087 fuel rail pressure low code
- Hard starting or extended crank
- Sudden loss of power
- Rough running engine
- Metal debris in fuel filter
See our CP4 vs CP3 vs DCR vs Disaster Prevention Kit guide to compare all options.
Frequently Asked Questions
Click each question below to expand the answer.
