These extremely high quality billet aluminum valve cover inspection port caps will directly replace the OEM caps with a perfect fit.  They are CNC machined from a solid piece of billet aluminum and will not strip or crack like the OEM caps sometimes do.  They are built for raceers in mind who are constantly inspecting the valve clearances.  Worry no longer about stripped threads!  They will not warp or distort even form the most extreme temperatures.  All of this helps provide a solid oil tight seal that will last for many years. 

This is for a complete set of four caps and includes high temperature oil proof o-rings. 

CNC machined from billet aluminum in the USA by AHRMA racers for AHRMA racers!