Mahle OE plain second piston ring set is a steel Napier 2nd ring sized 3.2087 inch with a 1.2 mm thickness and .135 inch radial wall. Supplied as a plain ring set, it serves as a direct replacement component for engine rebuilds and maintenance where this specific dimension and second‑ring configuration are required.
Mahle Rings Performance Steel Napier 2nd Ring 3.2087in x 1.2MM .135in RW Plain Ring Set