Gardner-Westcott Head Bolts

11 products — part of all Head Bolts

Gardner-Westcott head bolts for Harley-Davidson are one of the most uncompromising product categories in the catalogue — the fasteners holding the cylinder heads onto a Harley-Davidson V-twin experience repeated thermal cycling, combustion pressure, and the vibration that is fundamentally part of what a V-twin is. Gardner-Westcott specify head bolt grade, thread form, and clamp-load geometry for each engine generation: Knucklehead, Panhead, Shovelhead, and Evolution Big Twin each have different thread pitch and engagement length requirements. Using the wrong bolt, or an oversized aftermarket replacement that doesn't maintain the correct engagement depth, risks head gasket failure and case thread damage. Iron City Motorcycles stocks Gardner-Westcott head bolts because Harley-Davidson cylinder head work warrants the correct fastener from the specialist. Browse the full Gardner-Westcott Head Bolts range below.