https://www.ebay.com/itm/Quaife-ATB...ash=item41d7f5e605:g:ZDwAAOSwY~1aTVxb&vxp=mtr
https://shop.quaife.co.uk/catalogsearch/result/?vehicle=&q=QDF25Z
I looked at the Quaife paperwork I have and the part number on it was 56.309.170, but that is probably the Autotech driveline part number (that's the company paperwork that came with the Quaife). I didn't recognize the Quaife part number, but it does pop up on a Shoforum search. I already have one, but if I was to buy another, I would probably ask more questions to the seller.
https://shop.quaife.co.uk/catalogsearch/result/?vehicle=&q=QDF25Z
I looked at the Quaife paperwork I have and the part number on it was 56.309.170, but that is probably the Autotech driveline part number (that's the company paperwork that came with the Quaife). I didn't recognize the Quaife part number, but it does pop up on a Shoforum search. I already have one, but if I was to buy another, I would probably ask more questions to the seller.