GSC P-D EcoBoost 2.3 4Cyl Manganese Bronze Intake OR Exhaust Valve Guide - Single - 3017

GSC P-D Honda VTEC B16A/B17A/B18C Manganese Bronze Exhaust Valve Guide - Single - 3051

GSC P-D Honda D16 Manganese Bronze Intake/Exhaust Valve Guide +.001in Oversize OD - Single - 3060.001-1

GSC P-D Mitsubishi 4B11T Manganese Bronze Exhaust Valve Guide - Single - 3011

GSC P-D GM LS7 Manganese Bronze Intake/Exhaust Valve Guide +.001in Oversize OD - Single - 3082.001-1