Proform Slant Edge Aluminium Valve Cover Breather Push-In Style - Black Crinkle PR302-44 Product:With Recessed Red Ford Oval Emblem, Suit 1.22" Hole The threads are rolled after

The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating

Proform Slant Edge Aluminium Valve Cover Breather Push-In Style - Black Crinkle PR302-44 Product:With Recessed Red Ford Oval Emblem, Suit 1.22" Hole The threads are rolled afterSlant Edge Aluminium Valve Cover Breather Push In Style Black CrinkleWith Recessed Red Ford Oval Emblem, Suit 1. 22" Hole PR302 440 302 440 No more stamped steel breather caps for aluminium valve covers! Complete your engine dress up look with a breather cap that actually matches your look! These new Slant Edge aluminium push in breather caps are available in five different finishes, and with just about every Ford Oval emblem configuration imaginable: