The Mahle OE plain ring set is a performance steel Napier second ring specified for a 3.3169-inch bore with 1.2 mm section height and .135-inch RW measurement. Supplied as a plain ring set, the listing provides the exact dimensional profile intended for correct replacement in compatible engines. The description concentrates on accurate sizing and the steel Napier ring design for rebuild applications.
Mahle Rings Performance Steel Napier 2nd Ring 3.3169in x 1.2MM .135in RW Plain Ring Set