Mahle Rings Perf Plasma Moly Steel Top Comp Ring 4.040 x .0625 .190 RW Ring Set (48 Qty Bulk Pack)

When you're rebuilding an engine, especially for performance applications or when you need to ensure a solid seal in a high-mileage rebuild, the piston rings are critical. These Mahle OE performance plasma moly steel top compression rings are designed to provide a strong seal between the piston and cylinder wall. They are built for a 4.040 inch bore, with a .0625 inch ring width and a .190 inch thickness, which are common dimensions for many performance and heavy-duty engine builds.

What sets these rings apart is the plasma moly coating on the top compression ring. This advanced coating helps reduce friction between the ring and the cylinder wall, which can lead to improved engine efficiency and a longer lifespan for both the rings and the cylinder. The steel construction itself is well-built for durability under demanding conditions. This is a bulk pack containing 48 rings, making it a practical choice for engine builders who work on multiple vehicles or engines that require this specific size and type of ring.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for proper installation procedures and ring gap specifications to ensure optimal performance and longevity.