Used Mercedes-Benz GLA Steering Box

No — the GLA uses an electric power-assisted rack-and-pinion steering system, not a steering box. A steering box is a recirculating-ball or worm-and-sector unit typically found on older vehicles or some heavy-duty trucks and SUVs; it was never fitted to any variant of the GLA. If you think your steering is faulty, the part you are most likely looking for is the steering rack (also called a steering rack and pinion assembly), or possibly the steering column or power steering motor.

The GLA has a rack-and-pinion steering rack with electric power assistance, so the key parts to search for are the steering rack assembly, the electric power steering motor (which is mounted on the rack), and the steering column. If you have a vibration or knocking issue, track rod ends and the steering coupler/intermediate shaft are also worth investigating. Ask your breaker to quote against your full registration so they can confirm the exact rack variant for your engine and model year.

These are two distinct generations — the first-generation X156 ran from 2014 to 2019, and the second-generation H247 launched in 2020 — and the steering rack changed significantly between them, so cross-generation fitting is very unlikely. Always quote your registration to the breaker and ask them to confirm the part number matches before purchasing.

Trim level alone does not affect steering rack fitment on the GLA; the rack is determined by the generation and engine variant, not whether the car is badged Sport, Urban, or AMG Line. Be aware that AMG Line and AMG models may have different steering settings or column configuration, so confirm the specific part number with the breaker against your registration to be certain.

It can do — different engine variants (for example the 4-cylinder petrol, diesel, and the 4MATIC four-wheel-drive versions) can use different steering rack specifications. Always give the breaker your full registration so they can verify the correct rack for your specific drivetrain rather than just matching by model name and year.

Ask the breaker to match the part to your registration plate and confirm the part number, as variants can differ between engine types and whether your car is front-wheel drive or 4MATIC. It is also worth asking whether the electric power steering motor is included, as this is often paired with the rack and replacing them together is advisable. A reputable breaker should be able to confirm the mileage of the donor vehicle and offer a short warranty on the part.