Keeping your golf cart breathing correctly is almost as important as drawing air for your consumption. Much like you need oxygen to live, your caddie needs it at the proper pressure to do its thing. The Yamaha Crankcase Cover Gasket is one of the many players contributing to the overall compression rating. Your entire fuel system depends on this little gasket. The fuel pump alone cannot even draw a drop of fuel from the tank without the crankcase pressure. The diaphragm internally flexes one way, draws fuel, and pumps it up to the carb with the opposite motion. All of that is done with the pressure generated in the crankcase.This golf cart gasket will work for the Yamaha G11, G16, G20, G21, and G22 models. If you have an OEM manual handy, you can verify the factory number is the same. That number is JN6-15451-02. Give Buggies Unlimited a call today and have an expert set you up with exactly what you need.