The rear chunk on your golf cart is called many different names. None of them do the justice that the importance of this part donates. It is where the rear clutch on gas caddies and the motor on electric's are mounted. This is a box full of gears that takes the incoming power and translates it to the road. As you can imagine, there are quite a few Differential Ball Bearing's like the 6007 internally to make sure everything rides smoothly. When they go on the fritz, they can cause the components of the pumpkin to ride untrue, which will wear out other parts. Getting this fixed as soon as you have the opportunity will save you money in the long run.This golf cart bearing is a beast to install. It is an internal component inside the rear differential. You are going to have to disassemble it completely. Suppose you are not familiar with this type of work. In that case, you may want to get a Yamaha, EZGO, or Columbia OEM service manual when you call Buggies Unlimited.