The valve covers he grabbed from under his father's bench were hell to get back on, however, as he wanted to add a breather to them (used Mooneyes). The covers were already powdercoated and ...

Check out 427ci Windsor Ford Arias Hemispherical Head Conversion, ... the Arias/Shelby conversion heads are mated to cast-aluminum finned valve covers with breathers, oil fill caps, O-ring seals, ...

Mobile Diesel Service uses a pair of Case IH/New Holland dual valve covers (PN 2830784) with matching breathers (PN 504069558) from the 3.9L Cummins 4BT engine to replace four of the six stock ...

How To Install 2005-2007 Mustang GT Aftermarket Valve Covers. Ford Racing Offers Four Types Of Custom Valve Covers For The New Three-Valve 4.6. HOT ROD Staff Writer Oct 01, 2006.