Mahle Rings Perf Plasma Steel Top Ring 4.040in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

Mahle is a well-known name in the automotive industry, especially for their engine components. This set of performance plasma steel top piston rings is a prime example of their commitment to engine building. These rings are designed for a 4.040-inch bore and feature a 1.0mm top ring thickness with a .143-inch oil ring width. The plasma-deposited steel construction offers improved durability and performance over standard cast iron rings, making them a solid choice for engine rebuilds where reliability and longevity are key.

The HVOF (High Velocity Oxygen Fuel) Moly coating on these rings is a notable feature. This advanced coating process creates a very dense, well-bonded layer of molybdenum that helps reduce friction between the piston ring and cylinder wall. This not only contributes to improved engine efficiency and a slight increase in power but also significantly enhances wear resistance, especially under demanding operating conditions. This bulk pack contains 48 rings, making it ideal for shops or builders working on multiple engines or high-performance applications that require precise, consistent components.

When rebuilding an engine, the piston rings are critical for sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. Choosing a well-made ring set like these from Mahle OE is an important step in ensuring the long-term health and performance of your engine. Remember that these rings are not CARB approved and cannot be shipped to California.