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The Supertech manganese bronze exhaust valve guide for Nissan SR20DE is sized for a 6mm valve stem and intended specifically for that engine. The bronze guide surface helps control valve movement and resists wear in rebuilt or maintained heads. Verify your SR20DE variant and stem clearances before fitting to ensure proper installation and reliable valve operation.
Supertech Nissan SR20DE Manganese Bronze Exhaust Valve Guide 6mm Stem
