Mahle Rings Performance Napier THM-13 4.170in x .043in Plain Ring Set (48 Qty Bulk Pack)

Mahle OE is known for making solid engine components, and this THM-13 piston ring set is no exception. This bulk pack comes with 48 sets, making it a practical choice for shops or anyone rebuilding multiple engines. Each ring is designed for a 4.170-inch bore with a .043-inch thickness, fitting many common performance and heavy-duty applications.

These rings feature a Napier hook design on the second ring, which helps improve oil control and reduce blow-by, especially under demanding conditions. The well-built construction means they can handle the stress of regular use. This set is a popular option for engine builders looking for reliable performance without breaking the bank.

Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.