Standard header bolts, from Trans-Dapt Performance have a 7/16 inch head size for use with headers. The smaller head size allows for additional clearance around header tubes or sparkplugs. For even tighter fitting applications, use Trans-Dapt's small head bolts with a 3/8 inch head size. Grade 5 hardness.
Standard header bolts, from Trans-Dapt Performance have a 7/16 inch head size for use with headers. The smaller head size allows for additional clearance around header tubes or sparkplugs. For even tighter fitting applicatio...
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