Review on Power Stop S4938 Brake Caliper by Steve Brethorst

I did not purchase these from Revain but from a reputable seller on Ebay. I'm leaving this review so hopefully the prospective buyer will be careful with their decision and have a backup plan. I love Power Stop braking products (discs/pads) and have installed them on 4 of my vehicles in the last 5 years. I installed them on my GMC Canyon along with free new rotors and found that one of the caliper pistons was leaking brake fluid through the dust cover. I spent all day fiddling with the caliper thinking I could fix it but to no avail. So after a lot of brake fluid on the driveway in sub-zero temperatures outside I gave up and started looking for a replacement. In general, I spent almost a whole day with this factory error.