Valve Cover Bolt/Screw

The valve cover bolt or screw seals the valve cover to the top of the cylinder head. The valve cover seals the top of your cylinder head to keep debris out of the oil and prevent damage to the valves. If the bolts holding the valve covers down are overtightened, the bolts or valve cover itself can warp or break and cause leaks. If you notice your oil is often low, the cover appears to be warped, smoke due to oil seeping onto the exhaust manifold, or if there are oil leaks near the valve cover or broken or missing bolts, you may need to repair or replace your valve cover and valve cover bolts. For valve covers and valve cover bolts to fit your vehicle, check out O'Reilly Auto Parts.