BOV Kompact EM Dual Port VR58 (BMW B58 Gen 3)BOV Kompact EM Dual Port VR58 (BMW B58 Gen 3) The BOV Kompact EM Dual Port VR58 (BMW B58 Gen 3) is a genuine Turbosmart performance part designed for reliable operation, precise fitment and proven results on street and track builds. The Multiple Award winning Kompact EM Series of Upgraded Blow Off Valves are the world's first plug and play Upgrade solution for your factory diverter valve. Unplug and unbolt your OEM Valve, and install a Kompact EM
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