{"product_id":"l5p-duramax-fuel-system-contamination-kit-2020-2023-injectors-dcr-pump-full-system-replacement-alliant-power-ap57026","title":"L5P Duramax Fuel System Contamination Kit (2020–2023) – Injectors, DCR Pump \u0026 Full System Replacement | Alliant Power AP57026","description":"\u003ch2\u003eL5P Duramax Fuel System Contamination Kit (2020–2023)\u003c\/h2\u003e\u003cp\u003eIf your \u003cstrong\u003e6.6L Duramax L5P\u003c\/strong\u003e has experienced fuel system contamination, this complete Alliant Power AP57026 kit provides everything needed to properly restore the entire high-pressure fuel system, including the DCR injection pump and all 8 injectors.\u003c\/p\u003e\u003cp\u003eContamination from DEF misfueling, water intrusion, or poor fuel quality can quickly destroy injectors, pumps, and fuel rails. This kit is designed to eliminate guesswork and ensure a complete, reliable repair—not a partial fix that leads to repeat failure.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhy You Need a Complete Fuel System Replacement\u003c\/h2\u003e\u003cp\u003eWhen contamination occurs, debris spreads throughout the system. Replacing only one component often results in:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRepeat injector failure\u003c\/li\u003e\n\u003cli\u003ePump damage\u003c\/li\u003e\n\u003cli\u003eContaminated fuel rails and lines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis kit addresses the entire system at once, helping prevent costly comebacks and downtime.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete fuel system solution – Includes injectors, DCR pump, rails, lines, and supporting components\u003c\/li\u003e\n\u003cli\u003e100% end-of-line tested injectors and pump for proven reliability\u003c\/li\u003e\n\u003cli\u003ePlug-and-play DCR fuel pump replacement\u003c\/li\u003e\n\u003cli\u003eOE-equivalent components for proper fit and performance\u003c\/li\u003e\n\u003cli\u003eAssembled in the USA in an ISO 9001:2015 certified facility\u003c\/li\u003e\n\u003cli\u003e2-year unlimited mileage warranty from Alliant Power\u003c\/li\u003e\n\u003cli\u003ePending CARB certification\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cp\u003eThis kit includes all major components required to restore your L5P fuel system:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e(8) New Common Rail Injectors\u003c\/li\u003e\n\u003cli\u003e(1) DCR High-Pressure Fuel Injection Pump\u003c\/li\u003e\n\u003cli\u003eFuel Rails \u0026amp; High-Pressure Lines\u003c\/li\u003e\n\u003cli\u003eReturn Lines (LH \u0026amp; RH)\u003c\/li\u003e\n\u003cli\u003eFuel Cooler\u003c\/li\u003e\n\u003cli\u003eAftertreatment Injector\u003c\/li\u003e\n\u003cli\u003eDiesel Fuel Filter\u003c\/li\u003e\n\u003cli\u003eFull gasket and seal kit (EGR, intake, coolant, turbo, etc.)\u003c\/li\u003e\n\u003cli\u003eMounting hardware and pump nut\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e(All components are OE-equivalent replacements for proper installation and performance.)\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cp\u003eFits 2020–2023 6.6L Duramax L5P pickup trucks only:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Silverado 2500HD \/ 3500HD\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2500HD \/ 3500HD\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDoes not fit cab and chassis models.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eCommon Signs of Fuel System Contamination\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHard start or no start\u003c\/li\u003e\n\u003cli\u003eRough idle or misfires\u003c\/li\u003e\n\u003cli\u003eLow fuel rail pressure codes\u003c\/li\u003e\n\u003cli\u003eInjector failure\u003c\/li\u003e\n\u003cli\u003eMetal debris in fuel system\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you are seeing these symptoms, a complete system replacement is strongly recommended.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eProfessional installation recommended\u003c\/li\u003e\n\u003cli\u003eFuel system must be fully flushed before installation\u003c\/li\u003e\n\u003cli\u003eAlways replace filters and clean tank to prevent recontamination\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Proven Diesel Parts","offers":[{"title":"Default Title","offer_id":44010970677338,"sku":null,"price":9356.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/0148\/8730\/files\/AP55026.jpg?v=1788522732","url":"https:\/\/provendieselparts.com\/products\/l5p-duramax-fuel-system-contamination-kit-2020-2023-injectors-dcr-pump-full-system-replacement-alliant-power-ap57026","provider":"Proven Diesel Parts","version":"1.0","type":"link"}