Victor 42066CP Premium Piston Ring Set 4.065" Bore LS3 LSA LS9 L92

The Victor 42066CP is a premium piston ring set designed for GM LS engines with a 4.065-inch bore diameter, including LS3, LSA, LS9, and L92 applications. This professional-grade ring set features advanced engineering for superior sealing and performance in high-performance engine builds.

Specifications:

• Top ring height: 1.5mm with radial width .155"
• Second ring height: 1.2mm with radial width .174"
• Oil control ring height: 2.0mm with radial width .114"
• Bore size: 4.065 inches
• CP-20 oil ring assembly design

Key Features:

• Pre-lapped rings seat immediately, virtually eliminating break-in time
• Barrel-faced compression rings for efficient compression and reduced blow-by
• CNC-controlled gap chamfer optimizes compression sealing
• Reverse twist intermediate rings for better groove side sealing
• 20-degree ear angle on CP-20 oil rings provides superior cylinder wall sealing
• Special chemical polish on oil ring expander enhances oil drainback
• Optimized ring materials, coatings, and tension for reduced friction and extended service life

MAHLE Original piston ring sets are engineered to be installer-friendly with professional-grade quality and precision. Ring materials and coatings are optimized for each specific application, making these rings a preferred choice for professional engine builders and serious enthusiasts.