Mercedes Benz Transmission Manuals
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How to identify the Mercedes Benz transmission model you have from a stamped code on transmission casing
Identification of a Mercedes Benz Transmission, or (Gearbox) as they are also referred to, can be accomplished by following these guidelines.
Locate a code that is stamped on the exterior of the transmission casing.
This code will help to decipher several factors including: Part Number, Version, Number of Forward Gears, Automatic or Standard Shift, Input Torque, Production Number, etc.
By retrieving this code, you will be able to locate the corresponding transmission manuals in our database that can help you perform service and repairs as needed on your gearbox.
Mercedes Benz Multi Speed Automatic Shift Transmission Models Listed By Date Of Introduction
Mercedes-Benz uses the number “722” to identify automatic transmissions
- 722.0/722.1 — hydraulically controlled 3-speed/4-speed 4-bolt 1969–1982
- 722.2 — hydraulically controlled 4-speed 4-bolt auto transmission
- W3B-050 – 722.0 Reinforced version unique to 1975-81 450SEL 6.9 liter vehicles
- 722.3/722.4/4G-TRONIC — hydraulically controlled 4-speed 6-bolt 1981–
- 722.5 — 5-speed (hydraulically controlled 4-speed with additional electrically controlled 5th overdrive gear)
- 722.6/5G-TRONIC — electronically controlled 5-speed overdrive (aka NAG-1 or W5A330/W5A580)
- 722.7 — electronically controlled 5-speed automatic transmission (W5A180)
- 722.9/7G-TRONIC — electronically controlled 7-speed automatic transmission
- 724.2/7G-TRONIC Plus — improved version of the 7G-Tronic as used in the E300 Diesel Hybrid sedan
- 9G-TRONIC — electronically controlled 9-speed automatic transmission
- G56 — 6-speed manual