Seller notes

Upgrade your BMW M3 S54 engine with the Supertech BMIVN-1040-12 Black Nitrided Intake Valve set. This set of 12 high-performance valves is engineered to enhance your engine's efficiency and power output. Crafted with precision, these valves ensure optimal airflow and durability under high-stress conditions, making them an ideal choice for both street and racing applications. The black nitriding process provides superior wear resistance, reducing the chances of fatigue and extending the lifespan ...

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