Review on 🔧 DORMAN HELP! 65128 Transmission Drain Plug Kit: Efficient Solution for Easy Transmission Maintenance by Austin Cejudo

I installed this on a Th 350 transmission pan. The small drain plug is sealed with a small thin o-ring. Do yourself a favor and buy a small rubber washer instead of using an O-ring. Large plastic washers work well, just tighten them down but not over tighten and don't deform them too much and you'll be fine. For me it's worth the drain plug, however I mostly upgrade most things I buy these days as so much is sold just to make money and doesn't really care much about the real quality.