Mahle Rings Perf 4.180in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)

This is a bulk pack of 48 Mahle OE performance piston ring sets, designed for a 4.180-inch bore. Each set includes top rings made from plasma-moly steel, known for its strength and resistance to wear, paired with moly-filled second rings. These rings are crucial for sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. Mahle OE is a well-known name in engine components, and this bulk pack is intended for engine builders or shops working on multiple projects.

The top rings feature a plasma-moly coating, a process that hardens the surface and provides excellent durability, especially under demanding conditions. The 1.5mm top ring and 0.151-inch oil ring dimensions are standard for many performance applications, ensuring a good seal and efficient oil control. This specific set is designed for engines where performance and longevity are key considerations. While these are performance-oriented rings, they are built to Mahle's OE standards, meaning they are well-built and intended for reliable operation when installed correctly.

This bulk pack contains 48 complete ring sets, making it a practical choice for engine rebuilders or performance shops handling multiple vehicles. It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper ring gap setting and installation procedures to ensure optimal performance and engine health.