If anyone is hesitating where to service their 4x4, I highly recommend this address. Perfect agreement, appointment in 2 days, honest and high-quality work and most importantly the opportunity to arrive with the car. Everything went as agreed. Everything was shown and explained. After the test drive, everything was checked. 1 year warranty on the service. Only a little cold while waiting in the office. I recommend taking a blanket. A jacket solved the problem. Thank you for your work and approach.

4x4 Auto Repair · Transfer Cases · Differentials · Haldex Couplings
Rebuilding and servicing
4×4 drivetrains we understand
At x4HD we specialise in servicing automatically engaging transfer cases, differentials and Haldex couplings for BMW, Mercedes, Porsche, Audi, VW and other brands.
Our work
What we do
Got a problem with your ATC transfer case? Hearing a strange whine from the differential? Is the 4×4 drive not working in your Haldex-equipped car? We'll help you sort it out.
Transfer case service
BMW, Mercedes, Porsche, Audi, Volkswagen
We specialise in servicing automatically engaging transfer cases (ATC) for vehicles of all the brands listed above.
Complete differential service
Diagnostics, repair and replacement
Differentials vary in gear ratio and mounting hardware between vehicles, so we only keep a handful of complete units in stock.
Haldex coupling service
Generations I – VI · Škoda, Audi, Opel, Volvo
Installation and removal of Haldex couplings of all generations, I through VI, for vehicles driven by the Haldex system.
Why x4HD?
Choose right
With more than 12 years of experience, we guarantee maximum satisfaction with the work performed. We're one of the first workshops to offer comprehensive care for 4×4 systems across the entire European Union.

About us
We know our stuff
Call, come by, or send us your transfer case, differential or Haldex coupling directly for service. Don't hesitate to call with any other question – x4HD is one of the first companies to offer comprehensive care for 4×4 systems.
- Servicing automatically engaging transfer cases (ATC) for vehicles of all brands
- Complete differential service – repair and replacement
- Installation and removal of Haldex couplings, generations I to VI
- More than 12 years of experience and service across the entire European Union
We service vehicles of these brands








What our customers say
Reviews
Contact
Book an appointment
Call, come by, or send us a message – or ship us your transfer case, differential or Haldex coupling directly for service. We'll help you solve your problem so you can enjoy your vehicle's full performance again.
Go to contactBystřice 324, Bystřice 739 95
Okulickiego 1a, 38-400 Krosno (Poland)
Percostraße 15, 1220 Wien (Austria)
Pondělí – Pátek, 7:00 – 15:00
