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New, Thicker copper exhaust gasket eliminates the need to use 2 for YS engines. Larger inside diameter improves flow, lower restriction.
Use with the NMP exhaust stacks, the old corragated style Johnson and Hatori headers, and YSE0895 exhaust pipes for YS 91 through 200 size engines.
Outside Diameter: 0.454 inches
Inside Diameter: 0.372 inches
Thickness: 0.082 inches
One per Package