O.S. Engine OS23715000 Carburetor Seal Gasket O-Ring for S-15 20K,21D,21VZ-R  [OS23715000]

Replacement O-ring for engine carburettors

This O-ring gasket is a compact replacement part designed for the RC-scale carburettors listed in the product name. It creates a sealed joint between carburettor parts to help prevent fuel seepage and maintain steady fuel metering in model engines.

Compatibility is limited to the model codes referenced in the product name, so check the carburettor code on your RC engine before buying. The part is supplied as a spare sealing element to be fitted into existing carburettor housings, not as a complete carburettor assembly.

To fit, remove the carburettor from the engine or mount as required, inspect mating surfaces for dirt or damage, replace the old O-ring with the new seal, and reassemble carefully to avoid pinching the O-ring. Proper sealing supports stable idle and reduces the chance of fuel leakage during tuning and maintenance of RC engines.