Quote Originally Posted by dirtrulz View Post
Technically a shop should warranty the"work" but not the parts. If the part fails it is on the customer, if the shop did not do a competent job installing the parts, say they left a bunch of stuff loose, then they should cover their work if they are a good shop.
Technically no. The shop can provide a warranty on anything they want to. It is then up the customer to decide if it is worth it to take it to that shop.

I provide no warranty on work done with customer supplied parts. I also do not charge "extra" because I am not making anything off the parts. When the part fails I do not want a long drawn out conversation with the customer about my work being shoddy. Doesn't matter. No warranty. I do good work, but it just does not matter these days. If the part failed and I offered any warranty at all I would be on the hook.

I had a customer bring me an upgrade for swaybars for his vehicle. The front sway bar was routed through the subframe and I had to drop the subframe to change it out. I dropped the sub frame to access the brackets holding the sway bar in and saw that the brackets were wrong. Would not work. Nothing I could do. I put everything back together and charged him for the full job. When he finally finds the correct brackets he is going to pay for the entire job again. This is not the only example I have of this. Too many times I have had customers bring me parts, nope sorry wrong one. Not worth the headache most of the time for it. Or they want to buy the cheapest part they can find to do the job. There is a reason I have no warranty for when that cheap part fails.