The Mahle OE plain second-ring set is a performance-grade Napier steel 2nd ring supplied as a 48-count bulk pack sized 4.075in x 1.0mm with .136in radial width for engine rebuilds and production work. This plain ring set suits high-volume repair or machine-shop stocking, offering a standardized replacement ring for applications calling for that 4.075in sizing and the specified section dimensions.
Mahle Rings Perf Napier Steel 2nd Ring 4.075in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)