Review on Upgrade Your GM 12-Bolt Truck Differential with 🔧 USA Standard Gear (ZG GM12T-342) Ring & Pinion Gear Set by Montez Vazquez

China scrap. It had perfect markings, it was dead quiet and after 2000 miles it was complete rubbish. Started at 0.008 with a patch of play, and when it was making a lot of noise out of the blue after about 30 miles round trip to work, it basically opened up to 0.0022 and the gearbox just fell apart for no reason. This is of course from the Amazon return window. Talking about just not paying my Amazon bill makes me feel cheated. Transmission tuning has become a part of my life and nobody has ever done it to me. China strikes again with an inferior product. Keep your hands off your smart.