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The Supertech manganese bronze intake valve guide for Honda NSX is sized for a 5.5mm valve stem and serves as a direct replacement guide for that application. Manganese bronze offers a wear-resistant bearing surface to stabilize valve motion in rebuilt or high-mileage heads. Verify engine specifics before installation to ensure correct fitment and stem clearance.
Supertech Honda NSX Manganese Bronze Intake Valve Guide 5.5mm Stem
