Mahle Rings Perf Plasma Steel Top Ring 3.942in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

This is a bulk pack of 48 Mahle OE performance plasma steel top piston rings. Each ring measures 3.942 inches in diameter with a 1.0mm thickness and a 0.143-inch groove width. These rings feature a plasma-moly coating applied using HVOF (High Velocity Oxygen Fuel) thermal spray technology, which creates a very dense and well-bonded layer. This advanced coating helps reduce friction and wear, improving the longevity and performance of your engine's piston assembly. This set is designed for engine rebuilding applications where multiple engines or a high volume of parts are needed.

The plasma-moly coating is a notable feature that contributes to improved sealing and heat transfer between the piston ring and cylinder wall. This helps maintain consistent compression and reduces the risk of blow-by, especially under demanding operating conditions. The steel construction offers good durability and resilience. Because this is a bulk pack of 48 rings, it's ideal for machine shops or engine builders who frequently work on engines requiring this specific ring size and specification. Ensure you verify fitment for your specific application before purchase, as these are not CARB approved and cannot be shipped to California.