🔧 Genuine GM 10189205 Thermostat Bypass Pipe Seal - Reliable and Authentic Replacement Part Review

As my tests showed, this thermostat bypass has done wonders for my car's engine. It's easy to install and has improved the engine's overall performance. It's also made my engine's temperature more consistent, giving me peace of mind on long drives.

Ideal Replacement O-Ring for Coolant Bypass Tube. The only complaint was how expensive the o-ring was. However, you won't find a matching seal anywhere else.

Perfect for OEM GM 3100 Bypass Pipe (Dorman pipe I don't know) Be sure to remove all old bypass pipe gasket material, otherwise it will not fit properly. There is a groove where these gaskets fit perfectly, it needs to be completely cleaned of debris and old rubber. Sometimes it can be flat and flush with the metal, hard to see - try using a picture of clean pipe as a reference to find the groove and use a flat head to remove the old gasket.