MAHLE 3011276 Plasma Moly Steel Piston Ring Set 4.135in Bore 1/16 x 1/16 x 3/16 Bulk

The MAHLE 3011276 is a plasma moly steel piston ring set designed for high-performance V8 engine applications. Featuring a 4.135-inch bore diameter with a ring thickness stack of 1/16 in. (top) x 1/16 in. (second) x 3/16 in. (oil) and a reduced radial wall (RW) of .190 inches, this bulk set delivers professional-grade sealing and durability for engine builders.

Key Features:

• Plasma moly steel top compression ring — provides superior scuff resistance and reduced friction against the cylinder wall
• Positive-twist, barrel-faced top ring design — promotes efficient combustion sealing and rapid ring seating
• Reversed-twist taper-faced second ring — enhances groove side sealing and scrapes oil from the cylinder wall effectively
• Reduced radial wall (.190 in. RW) — lowers ring tension on the cylinder wall, reducing friction and allowing placement higher on the piston
• Ultra-flat ring flanks with precision finish — maximizes ring-to-piston groove sealing for improved compression retention
• Bulk packaging — ideal for engine builders and professional shops requiring multiple sets
• 4.135 in. bore diameter — sized for common high-performance V8 applications

MAHLE pioneered the use of piston ring simulation and computer development tools to engineer rings that minimize friction and deliver measurable horsepower gains. The plasma moly face coating provides an excellent balance of hardness and lubricity, resisting scuffing while maintaining a strong combustion seal. This ring set is a trusted choice for performance engine rebuilds where consistent sealing and long service life are essential.