This HKS muffler gasket is sized with a 54.7 mm inner diameter and a 62.7 mm outer diameter to match specific exhaust flanges. Provided as a replacement sealing ring, it is used to restore proper exhaust connection sealing where the listed dimensions correspond to the mating muffler or pipe surfaces.
HKS Muffler Gasket 54.7mm ID 62.7mm OD