Review on 🚀 Enhance Your Chevy's Performance with the Spectre 4933 Aluminum Water Neck by Andy Mitts

Works well but I would recommend using a new seal with or without an o ring. There were no gaskets included. On my small block 350 Chevy header, I couldn't figure out how an o-ring could work on its own and didn't want to run a leak test script just to find out. No leaks when using a new gasket (not included).