Piston Rings Piston and Ring Kit - 4.232 Bore, Set of 6

Features:

• Complete kit includes pistons and rings
• Designed for 6.7L Cummins diesel engines
• OE fitment ensures factory-level performance
• Cast aluminum pistons for durability and strength
• Floating wrist pins included with circlips
• Ductile iron top rings with ceramic chrome face
• Phosphate-coated second rings resist wear
• Standard tension oil rings for proper sealing
• Oversized 0.50 mm for rebuild applications
• Dish-style pistons with no valve reliefs
• Sold as a complete set of 6
• Backed by over 100 years of innovation

Get Your Cummins Back To Work With Confidence

If you're rebuilding a 6.7L Cummins and want a no-nonsense piston kit that delivers OEM-level reliability, the Hastings PRK373250 Piston and Ring Kit is exactly what you need. This complete set comes with six cast aluminum pistons, rings, floating wrist pins, and circlips, everything you need to freshen up your bottom end with confidence. Whether your truck is a daily driver, tow rig, or weekend workhorse, these components are built to handle the heat and pressure of hard-working diesel applications. The fit and performance match factory specs, so you’re not guessing during install or tuning. Hastings has been around for over 100 years, and their experience shows in how well these parts hold up in real-world use. You’ll get long-lasting performance with proven materials and designs that hold compression, reduce oil consumption, and keep your cylinders sealing strong. If you’re doing the job once and want it done right, this piston and ring set takes the guesswork out of your rebuild.

Engineered For Precise Fitment And Reliable Sealing

The Hastings PRK373250 piston and ring kit is built for 2007–2014 Dodge RAM 6.7L Cummins engines and delivers the precision needed for a factory-quality rebuild. Each piston is cast aluminum and designed to the correct standard height, compression specs, and dish volume to ensure compatibility with stock 6.7L setups. The kit includes .50 mm oversized rings, ideal for engines that require a fresh bore during rebuild. The top ring is a 3.0 mm ductile iron piece with a ceramic chrome facing, offering excellent durability under high combustion pressures. The second ring uses a phosphate-coated cast iron design to reduce friction and wear, while the 3.46 mm oil ring maintains proper tension for consistent sealing. Floating wrist pins and retaining clips are included for easy assembly. Designed to meet OE standards and backed by Hastings’ deep industry experience, this kit gives engine builders the confidence that each part will install cleanly and hold up under real-world diesel conditions.

Fitment: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Dodge RAM Cummins 6.7L

Notes:

• Designed for 2007-2014 Dodge RAM 6.7L Cummins engines
• Fits OCG engine configurations only
• Kit includes six pistons, rings, wrist pins, and clips
• Cast aluminum pistons are standard height, not decked
• Includes .50 mm oversized rings for rebuilt engines
• Pistons have dish design with no valve reliefs
• Top ring is ceramic chrome faced for durability
• Second ring is phosphate coated to reduce wear
• Oil control ring uses standard tension design
• Piston bowl volume is 51.2 cc with 18.3 mm depth
• Wrist pins use floating design with included circlips
• Not compatible with gapless or file-fit ring setups