The air filter on your golf cart is an essential little part, but the Yamaha Foam Pre Filter for mid to late G-models does not get enough love. This part acts as a barrier between the paper filter and the larger contaminate that could puncture it. It also helps trap the even smaller pieces that the filter may have trouble with at higher speeds. Will your coach run without this item? Yes, but you run the risk of severe damage if your filter is compromised and there is nothing to stop debris from entering the intake. The first thing that is at stake is your carb. That is an expensive repair you do not want to make. Stay ahead with seasonal maintenance.This golf cart filter is designed to sit right on top of your air filter. This is not a replacement for it, however. The right combination of components in the air box is needed to ensure airflow makes it into the system. Contact Buggies Unlimited today for quality Yamaha parts and accessories.