Carrillo 1-MD12HV-4075 CPP 1/16" Diesel HV Top Piston Ring 4.075" Bore - Single

The Carrillo 1-MD12HV-4075 is a single 1/16" (1.6mm) High-Velocity (HV) diesel top piston ring designed for a 4.075" bore. Engineered by CP-Carrillo for demanding high-performance diesel applications, this top ring delivers exceptional cylinder sealing and durability under extreme combustion pressures.

CP-Carrillo's diesel-specific ring designs are built to handle the elevated cylinder pressures and thermal loads inherent in performance diesel builds, including turbocharged and modified applications. This ring is sold individually, making it ideal for replacing a damaged ring or building a custom ring pack.

Key Features:

• Bore Size: 4.075" — suited for .020" over bores on common diesel platforms
• Ring Width: 1/16" (approximately 1.6mm) top ring
• Application: High-performance and modified diesel engines
• HV (High-Velocity) specification for superior sealing under high cylinder pressure
• Sold as a single ring — not a full ring set
• Manufactured by CP-Carrillo, a trusted U.S.-based performance engine components brand

CP-Carrillo offers rings in a variety of bore sizes, materials, and coatings for automotive, diesel, powersport, and marine applications. Always verify ring end gap per CP-Carrillo's published guidelines before installation, and consult your engine builder for application-specific recommendations.