Mahle Rings Perf Gas Nitride Steel 4.140in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

Mahle OE is known for making solid engine components, and these performance gas nitride steel piston rings are a great example of their work. If you're rebuilding an engine for performance, especially a gas engine, these rings are built to handle the demands. They measure 4.140 inches in bore size with a .043 inch thickness and a .157 inch ring groove width, designed for a precise fit in your pistons.

The nitride steel construction is a key feature here. Nitriding is a surface hardening process that makes the ring surface exceptionally durable and resistant to wear. This means they can withstand higher operating temperatures and pressures often found in performance applications, helping to maintain a strong seal between the piston and cylinder wall. This strong seal is crucial for maximizing compression and preventing blow-by, which directly impacts how much power your engine makes and how efficiently it runs. This bulk pack contains 48 rings, making it ideal for shops or builders working on multiple engines or larger V-configuration engines that require more than one set.

When you're putting an engine back together, the details matter. These Mahle rings are designed for a direct fit into the specified piston groove dimensions, simplifying installation. Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for detailed installation procedures and torque specifications.