{"product_id":"alliant-power-hp4-to-dcr-fuel-pump-conversion-kit-608990-2017-2023-6-6l-duramax-l5p","title":"ALLIANT POWER HP4 TO DCR FUEL PUMP CONVERSION KIT 608990 | 2017-2023 6.6L DURAMAX L5P","description":"\u003cp\u003eUpgrade the fuel system in your L5P Duramax with the Alliant Power 608990 HP4 to DCR Fuel Pump Conversion Kit. Designed specifically for the 6.6L Duramax platform, this complete conversion replaces the factory HP4 high-pressure fuel pump with the proven DCR (Diesel Common Rail) pump to provide improved long-term reliability and consistent fuel delivery.\u003c\/p\u003e\n\u003cp\u003eWhether you're repairing a failed fuel system or upgrading for added peace of mind, this direct-fit kit includes the DCR pump along with the required high-pressure, supply, and return fuel tubes for a straightforward installation. The DCR pump is engineered to provide dependable common rail pressure under demanding conditions, making it an excellent choice for stock, towing, and tuned applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConverts the factory HP4 pump to a DCR high-pressure fuel pump\u003c\/li\u003e\n\u003cli\u003eDirect-fit conversion designed specifically for the L5P Duramax\u003c\/li\u003e\n\u003cli\u003eImproved long-term durability and reliability\u003c\/li\u003e\n\u003cli\u003eSupports consistent high-pressure common rail fuel delivery\u003c\/li\u003e\n\u003cli\u003eIdeal for stock, towing, and performance applications\u003c\/li\u003e\n\u003cli\u003eComplete installation kit with required fuel tubes and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDCR high-pressure fuel pump\u003c\/li\u003e\n\u003cli\u003eHigh-pressure pump fuel tube\u003c\/li\u003e\n\u003cli\u003eHigh-pressure fuel rail tube\u003c\/li\u003e\n\u003cli\u003eLow-pressure return fuel tube\u003c\/li\u003e\n\u003cli\u003eLow-pressure supply fuel tube\u003c\/li\u003e\n\u003cli\u003eSupply tube hold-down bolt\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Alliant Power","offers":[{"title":"Default Title","offer_id":52659624575259,"sku":"608990","price":2400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot_2026-07-23_at_1.09.15_PM.png?v=1784833987","url":"https:\/\/wwmperformance.com\/products\/alliant-power-hp4-to-dcr-fuel-pump-conversion-kit-608990-2017-2023-6-6l-duramax-l5p","provider":"WWM Performance","version":"1.0","type":"link"}