Part of the Jerking under acceleration, clunking noises from underneath the car, or a 4x4/ABS warning light on the dash are classic signs of a failing BMW xDrive transfer case. Top Transfer Box focuses exclusively on diagnosing and rebuilding these units, covering models including ATC35L, ATC45L, ATC300, ATC350, ATC400, ATC450, ATC500, and ATC700.
Rather than fitting standard replacement parts that wear out again, we rebuild each transfer case with reinforced clutch packs, upgraded actuator gears, and heavy-duty bearings — addressing the root cause of the failure, not just the symptom.
Why Choose Top Transfer Box?
- Specialist focus on BMW xDrive transfer cases only
- Reinforced rebuilds designed to outlast standard replacement parts
- 12-month warranty on every rebuilt transfer case
- Custom quote based on your vehicle’s VIN or registration number
Top Transfer Box is a specialist division of the Top Injectors Group, based in Coventry. Get a tailored quote for your BMW xDrive transfer case using your vehicle’s registration or VIN.
Get a Transfer Case Quote
Send us your vehicle’s VIN or registration number for a fast, competitive quote.
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