This RC muffler gasket is a simple service part used to replace degraded seals on compatible exhaust flanges. Fitting a fresh gasket restores the flange seal to help prevent leaks that can upset idle speed or tuning consistency.
Use with the engine models shown in the product title only: G450PU and G620PU. Always check flange measurements and alignment before fitting to avoid uneven seating. The sale covers the gasket alone and does not include packing or mounting hardware.
Fitting tips: remove residue from mating faces, align the gasket carefully on the flange, and refit hardware to the recommended torque. Run the engine briefly to inspect for leaks, then retorque if necessary. A correct gasket helps preserve intended back pressure and consistent mixture behavior.
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