Review on Fel Pro RDS 55387 Rear Differential by Timothy Gonzalez

You can find a 9.5'-14 GM bolt spacer for less than half the price, but they are often made from much inferior material or you have to contend with poor quality. Bolt hole spacing on the cheap ones, it means you get what you pay for. The install map might show which side of the gasket is next to the cap, but since both sides get rtv maybe the logic is that it doesn't matter. Although it arrived in good condition, I'm not sure how?