Mahle Rings Performance Napier THM-13 4.180 x .043 .135in RW Plain Ring Set (48 Qty Bulk Pack)

In this bulk pack, you get 48 sets of Mahle OE THM-13 Piston Rings. These rings are designed for a 4.180-inch bore with a .043 inch top ring, .135 inch oil ring, and a Napier hook design on the second ring. The Napier hook helps the second ring break up oil film and scrape oil more effectively, which can lead to improved oil control and reduced blow-by. This setup is well-suited for performance engine builds where reliable sealing and oil management are critical.

Mahle is a well-known name in engine components, and these rings reflect that reputation for solid construction. The Napier hook on the second ring is a notable design feature that helps ensure consistent performance, especially under demanding conditions. Because this is a bulk pack of 48 sets, it's a practical option for engine builders who work on multiple vehicles or engines at once, offering a cost-effective way to stock up on essential internal engine parts.