Prothane crossmember bushings are high-quality polyurethane mounts designed to outlast typical factory rubber bushings that quickly wear out and tear away from their mounting brackets. Without properly functioning crossmember bushings, your transmission will suffer dangerous excess movement, causing extra noise and vibration. Prothane crossmember bushings can remedy these issues by holding your transmission firmly in place, allowing more power to be transferred to your wheels. They are engineered specifically for each vehicle, matching OE specifications and adding performance.