Mercedes 320 Transmission for Sale | Used 722.6 5G-Tronic 5-Speed Automatic

Description

About the Mercedes 320 Transmission

The Mercedes 722.6, marketed as 5G-Tronic, is the 5-speed electronically controlled automatic transmission Mercedes-Benz introduced in 1996. It became the workhorse automatic across the entire Mercedes-Benz lineup for over a decade, paired with engines ranging from the M104 inline-6 through the M112 V6, M113 V8, and M275 V12. The 722.6 features adaptive learning electronics, which means the transmission control module (TCM) learns the driver’s shift patterns and modifies shift points over time for smoother operation and better fuel efficiency. Inside the unit is a multi-plate clutch design that provides smooth shifts under both light load and heavy throttle conditions. The aluminum alloy housing reduces weight while providing structural integrity for the high torque applications it was designed to handle (up to roughly 500 ft-lbs in V8 applications).

Compatible Mercedes 320 Vehicles

• E320 sedan and wagon (W210, 1996 to 2002 with M104 inline-6; W210 and W211, 1998 to 2009 with M112 V6 and OM642 diesel V6)
• S320 sedan (W140, 1996 to 1999 with M104; W220 limited markets)
• C320 sedan and wagon (W203, 2001 to 2005 with M112)
• ML320 SUV (W163, 1998 to 2003 with M112; W164 with OM642 diesel V6 sold as ML320 CDI)
• R320 (W251, 2007 onward with OM642 CDI)
• GL320 (X164, 2007 onward with OM642 CDI)
• CLK320 coupe and cabriolet (W208, W209 with M112)
• SLK320 roadster (R170 with M112)

Donor Year Note: 1996 vs M112 Platform

The live page lists a 1996 donor year for this transmission. Important context: 1996 was the FIRST year of the 722.6 transmission, and at that time it was paired with the M104 inline-6 engine (in vehicles like the E320 W210 and S320 W140). The M112 V6 engine that the live page description references did not actually appear in Mercedes vehicles until model year 1998. So:

• If your vehicle is a 1996 to 1997 E320 W210 with the M104 inline-6, this 1996 donor transmission is a direct match
• If your vehicle is a 1998 onward E320 / C320 / ML320 / etc with the M112 V6, the 722.6 family is the same but the bellhousing pattern between M104 and M112 engines is different. Please call us before ordering to verify your specific engine compatibility
• If your vehicle has the M113 V8 or other engine, the 722.6 is still the same family but the front section (input shaft, bellhousing) may differ. Call to confirm

Installation and ECU Adaptation

In most cases, swapping a 722.6 into the same vehicle family is plug-and-play once the transmission is mechanically installed and filled with the correct Mercedes ATF 134 FE fluid (MB 236.14 specification). The transmission control module (TCM) in the donor unit retains adaptive shift logic, which may take 100 to 200 miles of driving to re-learn for your driving style. Some vehicles may require ECU adaptation via Mercedes Star Diagnostic (SD Connect) or equivalent scan tool to clear stored adaptation values and resynchronize the new transmission to the vehicle’s engine control module. We strongly recommend professional installation. Self installation is possible for experienced technicians with the right equipment (transmission jack, freight handling capability for the 175 lb unit, the correct fluid).

Why Buy From Vaz Auto Solutions

• Used Mercedes 722.6 / 5G-Tronic transmission at $499.00
• Operational shift quality verified before shipping
• Fluid condition documented (color, smell, debris check)
• Visual inspection for case cracks and external leaks
• RWD vs 4MATIC drivetrain confirmed at order with VIN
• Bell housing bolt pattern matched to your engine
• Free freight pallet shipping to all 50 states
• 15 day replacement warranty on internal defects
• Mercedes 722.6 / 5G-Tronic platform expertise on call at (240) 301-0095