Used Mercedes-Benz CLA Transfer Box

Only the 4MATIC (four-wheel-drive) variants of the CLA have a transfer box — it is the unit that splits drive between the front and rear axles. The vast majority of CLAs sold in the UK are front-wheel-drive and have no transfer box whatsoever. If your CLA is a 2WD model and you are chasing a drivetrain noise or fault, the part you are more likely looking for is the front differential, a driveshaft, or possibly the gearbox itself — worth confirming with a breaker against your registration.

The CLA has run across two main generations: the C117 (2013–2019, with a facelift in 2016) and the C118 (2019–present). Both generations offered 4MATIC variants and therefore a transfer box, but only on specific engine variants — in the C117 these were predominantly the CLA 220 4MATIC and CLA 250 4MATIC petrol models, while the C118 continued with selected 4MATIC petrol options. If your car is a 4MATIC, supply your engine code to the breaker so they can match the correct unit rather than going by year alone.

Both sit within the same C117 generation and share the same basic platform, so a transfer box from the same engine code across that 2016 facelift boundary may well interchange — the facelift was primarily cosmetic and did not involve a wholesale drivetrain redesign. However, ancillary bracket or mounting changes can occur quietly mid-production, so you should confirm the specific part numbers with the breaker against your exact registration before buying.

Trim level — whether that is SE, Sport, AMG Line, or any other designation — does not affect transfer box fitment at all; those are cosmetic and equipment packages rather than mechanical distinctions. What drives fitment is the engine code and whether the car is 4MATIC, so a transfer box from a CLA 250 AMG Line 4MATIC and a CLA 250 Sport 4MATIC of the same generation are the same part mechanically. Always give the breaker your engine code (found on your V5 or via a VIN check) to be certain.

The C118 is a fundamentally different generation with a new platform, so a transfer box from a C117 is very unlikely to be a straight swap onto a C118 even if the engine codes look similar. Dimensions, mounting points, and electronic interfaces can differ significantly between generations, and using the wrong unit carries real risk. Tell the breaker your full registration or VIN and they will be able to confirm which unit is correct for your car.

Modern Mercedes-Benz 4MATIC systems can involve electronic control units that communicate with the car's wider network, and whether a used transfer box requires coding or adaptation to your vehicle is something you should confirm with the breaker and your fitting garage before purchase. This is not something that can be stated as a blanket rule across all variants and years. A specialist Mercedes-Benz independent or dealer with XENTRY diagnostic capability is best placed to advise once you have the specific unit in hand.