Bosch LLY 04-05 Duramax Reman High Pressure CP3 Pump - Stock

The Bosch Reman High Pressure CP3 Pump for the 2004-2005 6.6L Duramax LLY is a fully remanufactured original equipment fuel injection pump designed to restore factory performance, reliability, and durability to GM 6.6L Duramax engines. The pump is rebuilt by Bosch, the original manufacturer, using a combination of new and re-certified components, ensuring robust quality and adherence to original equipment specifications.

Product Features

• OEM Quality Remanufacturing: Each pump is completely disassembled, cleaned, and inspected before being rebuilt with new seals and a new fuel pressure regulator.

• Rigorous Inspection and Testing: Pumps are tested across a range of operating conditions—including vacuum, output pressure, and flow rate—to ensure reliable delivery and optimal function.

• Direct Drop-In Replacement: Suitable for the 2004.5-2005 Chevy/GMC Duramax LLY, providing hassle-free installation that works seamlessly with factory fuel lines and electronics.

• Warranty Coverage: Backed by a one year unlimited mileage warranty.

• Superior Reliability: The CP3’s robust design is favored for lower failure rates and consistent performance compared to later CP4 pumps.

• Emissions Compliance: Fully meets original factory emission standards and maintains correct fuel atomization for factory calibration.

• Sealed OEM Reman Sticker: Remanufacted by Bosch with a Certified Quality Sticker.

Technical Specifications

Why Choose Bosch Reman CP3?

Bosch’s remanufactured CP3 pump is recognized across the diesel industry for its durability, high performance, and strict adherence to OE standards. Each unit is built and tested to replicate and often surpass new OE performance expectations, giving Duramax LLY owners factory-level reliability and long-term peace of mind for demanding diesel applications. The pump serves as both a reliable repair solution and a valuable upgrade for maintaining the original power and efficiency of the Duramax engine.