
Mercedes-Benz Gearbox Repairs & Truck Transmission Parts South Africa
Advanced Transmissions has been South Africa’s trusted Mercedes-Benz gearbox and transmission specialist. From the G3-50 and G3-60 through to the G-330, our experienced technicians rebuild, repair and supply OEM-quality replacement parts for the full Mercedes-Benz (Daimler) heavy-duty truck and bus range.
Our fully equipped Germiston workshop (Gauteng) handles complete Mercedes-Benz gearbox repairs, differential rebuilds and retarder service, while our Pinetown branch (KwaZulu-Natal) is your dedicated parts supply counter for the KZN region. Together we serve fleet operators, owner-drivers and independent truck workshops across South Africa.
Mercedes-Benz Gearbox Models We Service and Stock Parts For
Our Mercedes-Benz specialist workshop handles the full heavy-duty Daimler transmission range, including older boxes that other workshops will not take on.
Gearboxes
- G3/50
- G3/60
- G-100
- G-131
- G-210
- G-221
- G-240
- G-281
- G-330
Rear Axles and Differentials
- HL 7 series
- HD 7 series, old and new pattern, small and big pot
- MP3 and MP4 series
- Hub reduction axles
Ancillary Components
- PTOs (power take-offs)
- Retarder kits
- Voith VR115HV retarder repair kits
Featured: Mercedes-Benz G330-12KLA R11 Main Shaft Assembly
The main shaft assembly is the heart of the Mercedes-Benz G-330 gearbox, and one of the most demanding components to rebuild correctly. We carry the complete OEM-quality main shaft assembly, including the third, second, first and reverse gears with their matched synchronisers and bearings, ready for immediate fitment or supplied as a complete rebuild kit.
Each assembly we supply is sourced from our trusted European suppliers, Euroricambi first, followed by FAG, Fersa, INA, SKF and Timken, the same OEM-tier manufacturers that supply Daimler directly. We can also rebuild your existing main shaft assembly using ISO 9001 approved replacement parts that are of the highest quality, which is time saving and cost effective without compromising on reliability and durability.

Mercedes-Benz G330 gearbox — exploded view of the main shaft assembly.

Mercedes-Benz HD 7 differential — exploded view showing the crown wheel and pinion, differential housing, spider gears and bearings.
Our Mercedes-Benz Specialist Services
Full Gearbox Rebuilds
Strip, inspect, replace and reassemble, using OEM-quality replacement parts and the correct factory specifications for each Mercedes-Benz gearbox model. We also have selected exchange units available.
Differential and Axle Rebuilds
From routine bearing replacement through to full crown wheel and pinion rebuilds, our workshop carries the tooling and expertise for the HD7, HL-7 and hub reduction axle range, both front and rear.
Retarder Service and Repair
Voith VR115HV retarder repair kits and full retarder service, diagnosed and rebuilt correctly first time.
OEM-Quality Spare Parts Supply
Comprehensive in-stock range of Mercedes-Benz gearbox, differential, PTO and retarder components, dispatched to fleet workshops and owner-drivers across South Africa.
Technical Advice and Diagnostics
Not sure what is wrong? Send us photographs, a part number or a description of the symptoms. Our team has over thirty years of heavy-duty transmission experience and will point you in the right direction.
Why Fleet Operators Choose Advanced Transmissions for Mercedes-Benz
- Established 1992, with more than thirty years of heavy-duty transmission expertise
- Two branches: Germiston in Gauteng and Pinetown in KwaZulu-Natal
- OEM-quality parts from Euroricambi and CEI, as well as OEM quality bearings from INA, FAG, Fersa, Timken and SKF
- Comprehensive in-stock range, to minimise truck downtime
- Trusted by major South African fleet operators
- Honest advice, quality workmanship and fast turnaround, guaranteed
- Nationwide parts dispatched from both branches
Need a Mercedes-Benz Gearbox Repair or Parts Quote?
Whether you need a complete gearbox rebuild, a specific Mercedes-Benz main shaft assembly, a G-330 diagnosis, or just expert advice — get in touch today. We'll give you an honest assessment and a clear, fair quote.










