Mahle Rings Performance Steel Napier THM-13 4.045 x .043in .135RW Plain Ring Set (48 Qty Bulk Pack)

This is a bulk pack of 48 Mahle OE Performance Steel Napier piston ring sets, part number THM-13. These rings are designed for engine rebuilding applications where a large quantity is needed, such as for a shop or a large project. The Napier hook design on the second ring helps to scrape oil from the cylinder wall, which can improve oil control and reduce blow-by. The steel construction offers good durability for performance applications.

Each ring set measures 4.045 inches in bore size with a 0.043-inch thickness for the top and second rings, and a 0.135-inch width for the oil ring. This specific configuration is often used in performance engine builds where precise sealing and oil management are critical. Mahle OE is a well-known name in engine components, and these rings are built to meet their standards for reliable performance.