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The Supertech manganese bronze exhaust valve guide for Toyota 20V engines is specified for a 5mm valve stem and supplied for that application. The bronze construction provides a wear-resistant surface to support valve movement and sealing in serviced heads. Confirm your 20V engine variant and stem dimensions before fitting to ensure the guide matches the cylinder head requirements.
Supertech Toyota 20V Manganese Bronze Exhaust Valve Guide 5mm Stem
