Buying a Mercedes-Benz Gearbox in South Africa
The single biggest trap on a Mercedes is assuming "7-speed" tells you the box. The 722.9 7G-Tronic is a longitudinal, rear-wheel-drive torque-converter automatic across the C-Class (W204/W205), E-Class (W212) and S-Class (W221) — its signature fault is the valve body / conductor plate, which is often the real fix rather than a whole gearbox. The 724.0 7G-DCT is a completely different unit: a transverse, front-wheel-drive wet dual-clutch behind the A-Class, B-Class, CLA and GLA, prone to jerking from a standstill and clutch/mechatronic wear. They share no parts, so confirm by model and VIN.
The older autos and the manual
The proven 722.6 5G-Tronic sits behind the W203 C-Class and W210/W211 E-Class era (and petrol Sprinters) — one of the easier Mercedes boxes to source, with used units around R3,500–R9,000. The newer 725.0 9G-Tronic on the W213 E-Class, X253 GLC and W167 GLE is current-generation and usually quoted on application. The cheapest option is the 716.6 6-speed manual on the diesel and Kompressor W203/W204 C-Class, with reconditioned units around R6,500 on exchange.
When the gearbox isn't the real problem
On the 722.9, rough or jerky shifts and holding a gear often trace to the valve body / conductor plate rather than a dead gearbox, so it is worth a proper diagnosis before committing to a full unit. Engine Finder is a marketplace — submit one free quote request and verified Mercedes-Benz gearbox suppliers across South Africa come back to you with prices, warranties and availability. Driving something else? Compare gearbox prices across every make.
