Got an older EZGO Electric Marathon golf cart (from 1982 to 1993) that's having speed control problems? This part might be the fix. This is the movable contact, often called the wiper arm, which is a key component in the resistor-based speed control system of these classic carts. It comes with its plastic housing for easy replacement. It's specifically for the Resistor Type EZGO carts only – if you have a later model with a different controller, this won't fit. It replaces a bunch of common part numbers you might find on your old one, like 17504-G1, 17504-G2, S10790, and several others. Replacing a worn or pitted contact can restore smooth acceleration and proper speed settings. If you're handy and your cart fits the year and type, this is a standard maintenance item. Always disconnect the batteries before working on any electrical cart parts!