On 03/10/2020 22:52, alan_m wrote:
On 03/10/2020 22:28, RJH wrote:

Might that explain why any garage I've had dealings with won't fit
parts I'd
supply?


Too many customer supplied counterfeit parts purchased on Ebay?

Need for traceability of parts from known suppliers for safety,
liability or insurance purposes?


Non-franchised (back street) places just buy from the cheapest
trade outlet.
Neighbour can get a pair of front disks for less than £20 but
even he says they are rubbish so goes for something that has a
trade price of about £35/pair.
Then they phone the local franchised dealer to see what the
manufacturers price is and that's what they charge for the
cheapo stuff !!.