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

Carburettor sealing O-ring details

This O-ring gasket is a compact replacement component made to fit the carburettor codes listed in the product name. It acts as a sealing interface between carburettor elements to help prevent fuel seepage and support reliable fuel metering in model engines.

Compatibility is restricted to the specific model codes referenced in the product name, so verify the carburettor code on your RC engine before ordering. The item is provided as a spare sealing element for fitting into existing carburettor housings and is not a complete carburettor.

For correct fitment, remove the carburettor or access it in situ as required, clean the sealing faces, fit the replacement O-ring carefully to avoid pinching, and reassemble. A proper seal helps preserve idle stability and reduces the likelihood of fuel leaks during maintenance and tuning.