Mahle Rings Performance Napier THM-13 4.150 x .043 .135in RW Plain Ring Set

Mahle OE is a well-known name for dependable engine parts, and this Napier ring set continues that tradition. Designed for a 4.150 inch bore, these rings feature a .043 inch top ring and a .135 inch oil ring, making them a solid choice for many engine builds. The Napier hook on the second ring helps to control oil and prevent blow-by, contributing to better engine performance and longevity. This set is a plain ring set, meaning it's designed for straightforward installation and reliable operation in a variety of applications.

When you're rebuilding an engine, the piston rings are critical for sealing the combustion chamber and managing oil. This Mahle OE set offers a well-built solution for your needs. The specific sizing ensures a proper fit for engines requiring a 4.150 bore with these particular ring dimensions. It's important to note that this product is not CARB approved and cannot be shipped to California.