A spark plug is what fires your engine and replacing yours annually will keep your gas golf cart running properly. We only carry the best replacement spark plugs money can buy and that includes NGK. We supply spark plugs for Yamaha G1, G2, G3, G5, G8, G9, G11, G14, G16, G20 G22, and G29 the "Drive" gas golf cart models. Most of these plugs are spaced correctly out of the box but if you need gap distance, give our tech a ring.