This HKS muffler gasket measures 51.1 mm inner diameter by 59.9 mm outer diameter and is intended to seal exhaust and muffler connections at the specified flange size. As a dimensional replacement gasket, it restores proper sealing between exhaust components to prevent leaks where the listed ID and OD match the mating parts.
HKS Muffler Gasket 51.1mm ID 59.9mm OD