Mahle Rings 4.255in Bore Dia .017in Dykes PC479 Top Rings Plain Ring Set

These Mahle OE top piston rings are built with a .017 inch dykes design, a specific choice that helps them seal tightly against the cylinder wall. This attention to detail in the ring's profile is crucial for maintaining proper compression and preventing oil from entering the combustion chamber. When you're rebuilding an engine, getting the piston rings right is fundamental to its performance and longevity.

Mahle is a well-known name in engine components, and these rings are made to fit a 4.255 inch bore diameter. The plain ring design is a straightforward and reliable choice for many engine builds. Ensuring a good seal here means your engine will run more efficiently, with less blow-by and better power delivery. It's a small part that plays a big role in the overall health of your engine.