Specifications
- Brand
- CP Pistons
- Part #
- DC8559H-6

CP Pistons Cummins Diesel 5.9/6.7 HD w/ Cap Relief 7/16 8.559 1in. Longer Deck Plate Rod - Set of 6
$3003.96
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CP Pistons Cummins Diesel 5.9/6.7 HD w/ Cap Relief 7/16 8.559 1in. Longer Deck Plate Rod - Set of 6. Built for heavy-duty diesel applications.
Key Features
- Fits Cummins 5.9L and 6.7L diesel engines.
- Heavy-duty forged aluminum construction for increased strength and durability.
- Features a longer deck plate rod for improved reliability.
- Includes cap relief for enhanced performance under extreme conditions.
- Set includes six pistons for a complete 6-cylinder engine rebuild.
- Not CARB approved; cannot ship to California.
Product Details
If you're working on a Cummins 5.9L or 6.7L diesel engine and need a robust piston upgrade, this set from CP Pistons is a solid choice. These are heavy-duty pistons designed to handle the demands of modified diesel applications, featuring a longer deck plate rod for improved strength and reliability. They are specifically built for 6-cylinder Cummins engines, offering a significant step up from stock components for serious builds.
CP Pistons are known for their well-built construction, and this set is no exception. They utilize forged aluminum, which is much stronger and more durable than cast aluminum typically found in OEM pistons. This makes them ideal for engines that see higher boost pressures, increased fuel delivery, or frequent heavy towing. The cap relief design is a notable feature that helps ensure proper clearance and performance under extreme operating conditions. Each piston in this set is precision-machined to meet tight tolerances, ensuring a good fit and consistent performance across all cylinders.
This set includes six pistons, enough for a complete engine rebuild. While these pistons are built for performance, it's important to note they are not CARB approved and cannot be shipped to California. For optimal results and longevity, always follow the manufacturer's installation guidelines and ensure your engine is properly balanced and tuned after installation.
Specifications
- Brand
- CP Pistons
- Manufacturer Part #
- DC8559H-6
Frequently Asked Questions
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CP Pistons Cummins Diesel 5.9/6.7 HD w/ Cap Relief 7/16 8.559 1in. Longer Deck Plate Rod - Set of 6
