The Yamaha Crankcase Base Bolt is a much-needed part of your golf cart. With a gas engine, everything is about pressure. If you do not have the proper conditions in every aspect of the system, you will not get it running well, if even at all. For example, the engine's cylinder must maintain a compression rating of 145 PSI or higher just to get the fuel to ignite. Anything below that, and the cart will have trouble performing everyday tasks, and if it gets too low, you will not get it to run at all.This golf cart crankcase base bolt is for Yamaha gas-powered G20 and G21 models. It replaces OEM number 95817-10050-00, and it is a special-order item, so please allow three to four weeks for delivery. If you have to beg fuel up to the carb, this could be your issue, don't waste money on a fuel pump when it's something much more straightforward and a lot cheaper.