The Mercedes 722.9 Transmission debuted in 2003 and is the first 7-speed transmission to ever be used in a high production passenger vehicle. The 722.9 is uniquely engineered with a torque converter lock-up on all 7 gears and to be able to skip gears while downshifting. Raybestos Powertrain offers OE replacement and enhanced material 722.9 transmission parts to increase performance. See more product details below.