U660 Auto Transmission Systems C1/C2 Drum U660E Transmission Clutch. OEM Part Number：U660E. Advanced heat dissipation design prevents overheating, maintaining optimal transmission performance. Reliable cushion effect reduces component attrition brought on by bumpy routes and recurring vibration during operation. Built with vibration buffering structure, it helps gear sets withstand abrasion from frequent bumps encountered on the roadway., Manufacturer: DGOINGPI