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Upgrade the reliability and performance of your 2017–2022 GM Duramax with the Pure Power 608990 HP4 to DCR Conversion Fuel Pump Kit. Manufactured by PurePower, a Stanadyne company, this kit replaces the factory-installed HP4 pump with the robust and highly reliable DCR (Diesel Common Rail) pump. Built to meet and exceed OEM standards, the DCR pump is 100% end-of-line tested for peak performance and leak-free operation.
Designed specifically for the 6.6L L5P Duramax engine, this conversion kit includes the DCR pump along with all necessary high-pressure and low-pressure fuel tubes for a direct installation. Whether you’re maintaining your daily driver or preparing your truck for heavy towing, the DCR conversion provides improved durability, reliability, and long-term peace of mind.
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