Mahle Rings 4.0200in X 5/64in Cast Claimer Top Compression Ring Plain Ring Set

If you're rebuilding the top end of your engine, getting the right piston rings is crucial for proper sealing and compression. This set from Mahle OE is designed as a top compression ring, featuring a 4.0200-inch bore size and a 5/64-inch ring width. These are plain rings, meaning they don't have any special coatings or treatments, making them a straightforward replacement for many cast pistons.

Mahle is a well-known name in engine components, and these rings are made to fit standard cast pistons. The 4.0200-inch size is specific, so make sure it matches your cylinder bore exactly. Proper installation is key to ensuring these rings seat correctly and create a good seal against the cylinder wall, which is essential for maintaining engine performance and preventing blow-by.