SW Carbon™

For GM EC3 Systems

Raybestos has developed the SW Carbon torque converter wafer replacement material for transmissions with GM's EC3 control system (This includes the 4T60E, 4T65E, 4T40E, 4L60E, and 4L65E transmissions that demand constant slippage for smooth converter clutch performance.) While current OE materials have an uneven surface that can exhibit wear, SW Carbon's patented spun wound process provides an even contact surface and continuous carbon strand that greatly reduce the risk of fraying. SW Carbon withstands high heat and wear, providing superior performance to competitors' carbon impregnated paper replacements.


  • Made from durable heat-resistant carbon, not from carbon-impregnated paper
  • Patented spun wound process provides a continuous carbon strand and an even contact area
  • Coefficient levels consistent with current OE material
  • Exceeds the OE standard for durability
  • Made in the U.S.A.


  • Resists high heat and wear
  • Greatly reduces the risk of fraying
  • Provides smooth, efficient performance
  • Lasts significantly longer than any competitor's product
  • Outperforms and outlasts OE
  • Bonds easily with your existing equipment.