Carrillo DH7105-6 High-Performance Diesel Piston Set 4.125in Bore Cummins 6.7L

Featuring a 4.125" bore, 4.882" stroke, and designed to pair with an 8.335" connecting rod, this piston set is built for demanding high-output diesel applications requiring exceptional strength and precision.

CP-Carrillo engineers these pistons using application-specific forgings and proprietary processes that result in tighter tolerances, improved thermal management, and superior durability over OEM components. The DH7105 piston design is part of CP-Carrillo's Diesel Hybrid platform, which allows for a longer connecting rod without the need for a deck plate — directly improving the rod-to-stroke ratio and reducing harmful side loading on the cylinder walls.

Key Features:

• 4.125" bore diameter
• 4.882" stroke
• Designed for use with 8.335" Carrillo connecting rods (sold separately or as part of hybrid kit)
• 16:1 compression ratio
• 1.358" wrist pin diameter (Duramax-style pin for hybrid application)
• Application-specific forging for optimized grain flow and surface integrity
• Proprietary ring and wrist pin treatments for reduced friction and extended service life
• Reduces overall reciprocating weight compared to factory piston-and-rod assembly
• Compatible with CP-Carrillo DCDM8335S and DCDM8335H connecting rods

CP-Carrillo pistons are designed and manufactured in Irvine, California, and are trusted by professional engine builders and diesel performance enthusiasts worldwide. The DH7105-6 set delivers the precision and durability required for high-horsepower street, tow, and competition builds. Cross-reference part number: CPPDH7105-6.