Specialist rebuild of the current-generation ATC13-1 (standard xDrive) and ATC13-2 (M xDrive) transfer cases fitted to BMW's G-Series range and M Performance models — worn clutch pack, actuator gears and bearings replaced, tested, and refilled with high-grade fluid.
ATC13-1 is the standard xDrive unit fitted to non-M G-Series models. ATC13-2 is the version fitted to M Performance and M xDrive models with a rear-biased torque split — it differs internally from the ATC13-1. We confirm the exact variant from your VIN before quoting.
The most common symptom — worn multi-plate clutch pack losing grip under load.
Points to internal gear or bearing wear rather than an engine or exhaust issue.
Triggered when the transfer case control module detects a fault in the clutch actuation.
Torque well beyond the factory rating for your model accelerates clutch pack wear — common on tuned X5M/X6M and M5/M8 cars.
Send your 17-digit VIN and symptoms — we confirm whether you have the standard ATC13-1 or the M xDrive ATC13-2.
We supply an already reconditioned, bench-tested unit on exchange — your old unit becomes the core, refundable deposit applies.
Fit it yourself, or we fit it at our Coventry workshop, including oil and adaptation. Every unit is covered by a 12-month warranty.
The ATC13-1 is the standard xDrive unit fitted to the current-generation G-Series line-up: X3 (G01), X4 (G02), X5 (G05), X6 (G06) and X7 (G07).
ATC13-1 is the standard xDrive unit. ATC13-2 is fitted to M Performance and M xDrive models with a rear-biased torque split — including the X5 M and X6 M (F95/F96), M5, M8 and M3/M4 Competition xDrive — and differs internally from the standard ATC13-1. We confirm the exact variant from your VIN.
Torque well beyond the factory rating for your specific model can accelerate clutch pack wear. We can advise what's realistic once we know your VIN and power output.
We can't decode a unit from a registration number alone — have your 17-digit VIN ready (V5C, dashboard or door frame).