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GSC Power Division manganese bronze exhaust valve guide for Toyota 1JZ engines, offered as a single unit with +.001in oversize OD. The oversize dimension addresses valve-to-guide clearance during head service or repair. This replacement guide is intended to restore correct valve alignment and seating where the original guide is worn, enabling reliable valve movement after installation.
GSC P-D Toyota 1JZ Manganese Bronze Exhaust Valve Guide +.001in Oversize OD - Single
