This GSC Power Division intake/exhaust valve guide is produced for Ford EcoBoost 2.3L 4-cylinder engines and supplied as a single unit with a +0.001 inch oversize outer diameter. The listing identifies the part as a direct-fit replacement valve guide in manganese bronze construction for the named EcoBoost application.
GSC P-D Ford EcoBoost 2.3L 4 Cyl Intake/Exhaust Valve Guide +.001in Oversize OD - Single