
- Filter: A high-quality fuel filter to capture contaminants and impurities from the fuel supply.
- Gaskets: Essential gaskets and seals to ensure proper sealing and prevent fuel leaks within the fuel system.
- Injectors: Precision-engineered fuel injectors for accurate and efficient fuel delivery to the engine's combustion chambers.
- Fuel Rails: Fuel rails to distribute fuel evenly to the injectors.
- Injection Pump: A reliable injection pump to deliver fuel to the injectors at the correct pressure and volume.
- Injector Lines: Fuel injector lines to connect the fuel pump to the injectors, ensuring a smooth and uninterrupted fuel flow.

Alliant's AP54821 L5D Fuel Contamination Kit is a comprehensive solution designed to revitalize the fuel system in your 2019-2020 GM 6.6L Duramax L5D 4500/5500/6500HD. This kit includes all the essential components to effectively address fuel contamination and restore optimal engine performance.
Filter: A high-quality fuel filter to capture contaminants and impurities from the fuel supply.
Gaskets: Essential gaskets and seals to ensure proper sealing and prevent fuel leaks within the fuel system.
Injectors: Precision-engineered fuel injectors for accurate and efficient fuel delivery to the engine's combustion chambers.
Fuel Rails: Fuel rails to distribute fuel evenly to the injectors.
Injection Pump: A reliable injection pump to deliver fuel to the injectors at the correct pressure and volume.
Injector Lines: Fuel injector lines to connect the fuel pump to the injectors, ensuring a smooth and uninterrupted fuel flow.
By replacing these components with the Alliant AP54821 L5D Fuel Contamination Kit, you can effectively eliminate fuel contamination, improve engine power and efficiency, and restore your vehicle's original performance.
Note: [...]
- Filter: A high-quality fuel filter to capture contaminants and impurities from the fuel supply.
- Gaskets: Essential gaskets and seals to ensure proper sealing and prevent fuel leaks within the fuel system.
- Injectors: Precision-engineered fuel injectors for accurate and efficient fuel delivery to the engine's combustion chambers.
- Fuel Rails: Fuel rails to distribute fuel evenly to the injectors.
- Injection Pump: A reliable injection pump to deliver fuel to the injectors at the correct pressure and volume.
- Injector Lines: Fuel injector lines to connect the fuel pump to the injectors, ensuring a smooth and uninterrupted fuel flow.