Mahle Rings Perf Plasma Moly Steel Top Comp Ring 4.615in x 1.0MM .143 RW Ring Set (48 Qty Bulk Pack)

This bulk pack gives you 48 top compression rings, each measuring 4.615 inches by 1.0 millimeter. These are Mahle OE rings, known for their plasma moly steel construction, which means they're built tough for demanding engine applications. The plasma moly coating is a hard, wear-resistant surface that helps the rings seal tightly against the cylinder wall, reducing blow-by and improving overall engine efficiency.

When you're rebuilding an engine, especially for performance, the piston rings are critical for sealing the combustion chamber. These rings are designed to handle the heat and pressure associated with higher performance builds. The 1.0mm thickness is a common size for many performance applications, and the plasma moly surface treatment is a notable upgrade over standard cast iron rings, offering improved durability and reduced friction. This large quantity pack is ideal for shops or builders who frequently work on engines that use this specific ring size.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation procedures and recommended clearances to ensure proper function and longevity.