The GSC P-D oversize stopper valve guide is specified for Ford Raptor 3.5L EcoBoost engines as a single +0.001in intake/exhaust valve guide. Intended for use during valve-train service or rebuilds, it supplies an explicit oversize dimension to suit applications requiring that nominal increase and is offered as the described single replacement part for those engines.
GSC P-D Ford Raptor 3.5L EcoBoost +.001in Oversize Stopper Intake/Exhaust Valve Guide - Single