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Supertech manganese bronze intake and exhaust valve guides for Ford Duratec and Mazda MZR 2.0L/2.3L engines, sold as a set of 8. These guides accept 6mm valve stems and are intended for cylinder head rebuilds where correct valve-to-guide clearance must be restored. They offer a durable, OEM-style replacement to maintain valve alignment and consistent operation in compatible Duratec and MZR applications.
Supertech Ford Duratec / Mazda MZR 2.0L/2.3L Intake/Exhaust Valve Guide - Set of 8
