Mahle Rings 4.170in Bore Dia 1/16in PC479 Top Rings Plain Ring Set (48 Qty Bulk Pack)

If you're rebuilding an engine, getting the piston rings right is critical for proper sealing and performance. This bulk pack of Mahle OE PC479 top rings is designed for a 4.170-inch bore diameter, with a standard 1/16-inch thickness. Mahle is a well-known name in engine components, and these rings are built to meet the demands of a fresh engine build, ensuring a good seal between the piston and cylinder wall. This is important for maintaining compression, controlling oil consumption, and getting the most out of your engine.

This set includes 48 rings, making it a practical choice for shops or builders working on multiple engines or larger projects. The plain ring design is a common and reliable type for many applications. Mahle OE parts are often specified by vehicle manufacturers, so you can be confident in their fit and function. Proper installation is key; ensure your cylinder walls are honed correctly and the rings are seated according to the engine builder's specifications for optimal performance and longevity.

Because these rings are not CARB approved, they cannot be shipped to California. Always refer to your specific engine's service manual for detailed installation instructions and specifications to ensure a successful rebuild.