You must agree that there will be no warranty on labour to replace a part that has failed for any reason other than obvious faulty installation. If there is any question as to whether the part failed due to faulty installation or part quality, you will not receive the benefit of the doubt.
In most cases there will be a "corking fee", much like the fee charged when you bring your own bottle of wine to a restaurant. The corking fee will be 20% of the list price of the part.
The parts you bring us must be the right parts for the car. If the part is wrong, and the technician needs to spend extra time putting the car back together or to a condition whereby it can be pushed off the hoist while we are waiting for the correct part, then that time will be billed to you.
If you bring an aftermarket part that requires modification or other extra work that would not be required if we had used the correct part, then you must pay for the extra time we spend installing the part. We cannot always give an upfront estimate of the extra time necessary, as we may not know what will be required until the car has been dismantled.