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Ultimate Ddp Cp4-421 Remanufactured Cp4 Injection Pump Series [5ziB1072]

$68.99 $220.99 -69%

DDP CP4-421 Remanufactured Injection PumpIntroducing the DDP CP4-421 Remanufactured CP4 Injection Pump, a top-of-the-line replacement designed for the 2011-2016 GM 6.6L Duramax LML. This pump is a direct substitute for your original unit, ensuring se

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DDP CP4-421 Remanufactured Injection Pump

Introducing the DDP CP4-421 Remanufactured CP4 Injection Pump, a top-of-the-line replacement designed for the 2011-2016 GM 6.6L Duramax LML. This pump is a direct substitute for your original unit, ensuring seamless integration and optimal performance. Crafted with precision, the CP4-421 features stock replacement parts that guarantee the same output and fuel output as the factory unit, providing a hassle-free installation process.
  • Stock Replacement: Designed to be a direct replacement for your original unit, the CP4-421 ensures compatibility and easy installation.
  • Stock Power Levels: Maintain your engine's power levels and fuel efficiency with this remanufactured pump that mirrors the factory specifications.

Product Specifications and Technical Details

The DDP CP4-421 Remanufactured CP4 Injection Pump is built to withstand the demands of your Duramax LML engine. Each pump undergoes a thorough remanufacturing process that includes precision testing and quality control measures to ensure reliability. This pump features stock power levels and fuel output, making it an ideal choice for those seeking to maintain or restore their vehicle's original performance. With a 1-Year Unlimited Mileage Warranty, you can trust that your investment is protected.
  • Remanufactured for Reliability: The CP4-421 goes through a rigorous remanufacturing process, ensuring that it meets the highest standards of quality.
  • 1-Year Warranty: Enjoy peace of mind with a comprehensive warranty that covers your pump for a full year with unlimited mileage.

Practical Uses and Benefits

Whether you're a professional mechanic or a DIY enthusiast, the DDP CP4-421 Remanufactured CP4 Injection Pump is an essential component for your 2011-2016 GM 6.6L Duramax LML. This pump is designed to enhance your vehicle's performance, ensuring that it operates at peak efficiency. Whether you're tackling daily commutes or off-road adventures, the CP4-421 is a reliable choice for keeping your Duramax engine running smoothly. It's perfect for those who demand the best from their vehicles and are looking for a cost-effective solution that won't compromise on quality or performance.
  • Enhanced Performance: Experience improved power and fuel efficiency with the CP4-421, ensuring your Duramax LML performs at its best.
  • Cost-Effective Solution: Choose the DDP CP4-421 for a reliable and affordable way to keep your vehicle running smoothly.

What Our Customers Say

January 5, 2026

Absolutely no complaints!

A perfect product, and a very perfect purchase.

- Carmen W..

January 5, 2026

Absolutely no complaints!

I'm thrilled by how genuinely great this is.

- Jasmine T..

January 5, 2026

Absolutely no complaints!

An outstanding product. And very, very practical.

- Kyler R..

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