Billet Aluminum Wire Loom Set organizes and protects your spark plug wires. Available in ball-milled finish and fits spark plug wire sizes from 7mm to 9.5mm. Mounts with existing valve cover bolts and rests above factory exhaust manifolds or headers. May not clear some factory exhaust manifolds. A 3/4" clearance is required between the top of exhaust manifold or header and the bottom of the valve cover. Check yours before ordering.