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GSC Power Division oversize exhaust valve guide for Subaru EZ30 PHZ 1 engines, stopper-style OVERSIZE +0.001 in, single piece. Intended for heads that require a slight oversize to correct wear, this guide restores proper valve-to-guide clearance during cylinder head work. Use it when re-machining or replacing worn guides to ensure consistent exhaust valve alignment.
GSC P-D Subaru EZ30 PHZ 1 Exhaust Valve Guide Stopper Style OVERSIZE +.001 - Single
