Review on 🔍 Kohler 20-041-13S Natural Valve Cover Gasket - Enhanced SEO by John Fenton

OEM Gasket much thicker than original. The biggest problem is that the valve cover itself is as thin as a beer can. Just make sure the surface is flat, a small ball point hammer on a flat surface will smooth out the edge of the valve cover. And all you have to do is gently tighten the screws. If you "gorillan" the screws, you will certainly crush and split the gasket, and the leak will appear again.