Product Description Specifications Made from hardened steel, these locators use an inboard locating shoulder to center the seat and hold the spring in place. The 4872 features a 1.300" OD and a .520" ID which works well for our 26918 Beehive valve spring. Category: Engine Components>Valve Springs, Retainers Core: N LTL: N MPN: 4872-16 Proposition 65: Y Special Order: Y