This item is an RC exhaust muffler gasket intended to replace worn seals at the muffler flange. It restores a close seal between the muffler and engine exhaust flange to reduce leakage that can cause running inconsistencies.
Fitment is limited to the engine models stated in the title: G450PU and G620PU. Verify the flange size and bolt layout before installation to ensure correct seating and to prevent misalignment. This listing contains only the gasket; packing or fasteners are not included.
Installation guidance: clean the contact surfaces thoroughly, remove the old gasket material, align the new gasket on the flange, and reassemble using the recommended torque values. After a short test run check for leaks and tighten fasteners if required. The gasket helps maintain expected back pressure and prevents exhaust leaks that can affect mixture and idle settings.
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