Mahle Rings Performance Plasma Steel Top Ring 4.120in x 1.0MM .143in RW Bulk HVOF Moly Ring Set

The Mahle 3011136B is a high-performance plasma steel top piston ring. These rings are crucial for sealing the combustion chamber, preventing exhaust gases from entering the crankcase and oil from contaminating the combustion chamber. This specific ring features a 4.120-inch diameter and a 1.0mm thickness, often incorporating a HVOF (High-Velocity Oxygen Fuel) Moly coating for superior durability and reduced friction. They are typically used in high-performance engine builds and are sold in bulk packs for comprehensive engine overhaul projects. Installation requires specialized tools and expertise due to the precise nature of engine component assembly. Proper ring gap and orientation are critical for optimal engine function and longevity. It is recommended to consult a service manual or a professional for installation. These piston rings are dimension-dependent and are designed to fit engines with corresponding bore and ring groove specifications. Please verify your engine's requirements before purchase to ensure proper fitment and performance.