Help clean up your engine bay and add some under hood flair with Billet Specialties Spark Plug Wire Looms. Each pair of wire looms are CNC machined from solid blocks of 6061-T6 billet aluminum and feature a split, two-piece design that allows wires to be easily fed through. All wire looms mount to the base of a valve cover with a set of included adjustable tabs that feature stainless steel hardware. Designed as a universal application item, these wire looms have been test-fitted and work with all small and big block Chevrolet and Ford engines. Billet Specialties wire looms accept spark plug wires up to nine millimeters in diameter and are available in a polished or black powder coated finish with a variety of different designs to fit any style.