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This Supertech manganese bronze exhaust valve guide is a direct-fit replacement for specified Toyota/Sicon applications and is sized for a 5.5mm valve stem. It restores valve alignment and helps maintain reliable sealing and wear resistance in the exhaust ports. Use during head service or valve job to return factory clearances and steering of exhaust valves.
Supertech Toyota/Sicon Manganese Bronze Exhaust Valve Guide 5.5mm Stem
