Review on 🚗 Fel Pro Rear Main Seal for Chevrolet 40640 by Russ Charmin

So I bought this to fix the rear mainshaft oil seal. I originally received a kit with this copper/aluminum gasket with black silicone as shown in the photos. I had to return this set as the seal was broken. They sent me another bs40640 kit, also branded fel-pro. However, it was a steel gasket with blue silicone. Disappointed because I didn't know if these parts were original, I went to the dealer to buy them. They wanted $80 for the gasket alone and it looked EXACTLY copper/aluminum with black silicone. I then went by the Autozone to look at the same kit and they had a blue silicone kit. The circular seal on both sets looked exactly the same. There seem to be two companies that make these pads for Felpro, so they're both "authentic". I would have preferred an aluminium/copper color as the original that came out of the car was also aluminium. The steel had a slightly poorer fit. As a result, I put blue and initially no leaks. Bad update on durability as I only installed for about two weeks.