MAHLE 3011189 Performance Piston Ring Set Gas Nitrided Steel Bore - 4.140

The MAHLE 3011189 plain piston ring set is engineered for high-performance applications requiring precision fitment and durability. This ring set features gas nitrided steel construction for enhanced wear resistance and improved sealing characteristics under demanding operating conditions.

Key Specifications:

• Bore diameter: 4.140 inches
• Top ring thickness: .043 inches
• Oil ring thickness: .157 inches (rectangular wire design)
• Gas nitrided steel material for superior surface hardness
• Plain ring configuration for performance applications

MAHLE piston rings are manufactured to OEM specifications and beyond, incorporating advanced materials and coatings that reduce friction, improve oil control, and extend engine life. The gas nitriding process creates an extremely hard surface layer that resists scuffing during break-in and maintains excellent sealing properties throughout the ring's service life. This ring set is designed for one cylinder and should be ordered in the quantity needed for your complete engine build.