Second Hand Mercedes-Benz S-Class Differential

These sit in different generations — the W221 ran from 2005 to 2013 (facelift 2009), while the W222 ran from 2013 onwards, so a 2010 unit is W221 and a 2014 unit is W222 and they are not the same generation. Even within a generation, what matters most for differential fitment is the engine code, fuel type, and gearbox type rather than the model year alone. Confirm the engine codes on both vehicles with your breaker before proceeding, as they will match the donor unit to your registration directly.

The badge — S350 or S500 — reflects the engine fitted, and the differential specification follows the engine code and gearbox type rather than the badge name, so they are not automatically interchangeable. An S350 diesel and an S500 petrol will have different drivetrain demands, meaning the differential ratios and construction are likely to differ. Give your breaker both engine codes and confirm the gearbox type so they can match the correct unit to your car.

Trim level — whether that is SE, AMG Line, or a similar designation — does not affect differential fitment; it is a cosmetic and equipment distinction rather than a mechanical one. What actually governs fitment is the engine code, fuel type, and whether the car has a manual or automatic gearbox. You may find cosmetic differences on a salvage vehicle from a higher trim, but the differential itself follows the drivetrain specification, not the trim badge.

The W221 generation ran from 2005 to 2013, with a facelift arriving in 2009, so there is a production boundary within the generation that may or may not affect differential compatibility depending on engine and gearbox specification. Whether a post-2009 facelift unit crosses cleanly into a pre-facelift car is something you should confirm with the breaker against your specific registration and engine code, as ancillary and mounting changes can occur mid-production without a clear public record. Providing your engine code gives the breaker the best chance of confirming a safe match.

The W222 ran from 2013 to 2020 and the W223 launched in 2020, so these are distinct generations with different platform and drivetrain architectures. Crossing that generation boundary means the differential is very unlikely to be a direct swap, but the definitive answer depends on your engine code and gearbox type. Route this to your breaker with your full registration so they can check the specification against available stock.

Yes, this is one of the most important factors — a 4MATIC all-wheel-drive S-Class uses a fundamentally different drivetrain layout to the rear-wheel-drive model, and the differentials are not interchangeable. You need to source a unit that matches your driven axle configuration as well as your engine code and gearbox type. Make sure you tell your breaker whether your car is 4MATIC or RWD alongside the engine code so they can quote you the correct unit.