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42MM Blow Off Valve

Without flange
Mfg Part #
ECS Part #
Active Autowerke
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Availability: Direct Ship, Ship ETA Nov 25, 2020
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Product Details

Blowoff valves are pressure release systems in turbocharged engines. They prevent compressor surge and reduce wear on both the turbocharger and engine. Blowoff valves relieve the damaging effects of compressor "surge loading" by allowing the compressed air to vent to the atmosphere - not only does this take stress of your car's powerplant, but it also makes a distinct hissing sound.

The Active Autowerke Blowoff Valve is a pull-type BOV best suited for high-horsepower applications. Constructed from an all aluminum cast body, with a large single stage, steel pull-type valve to handle the extreme pressure and airflow discharge volume that is associated with high boost / horsepower applications. The BOV is engineered for up to 43psi of boost and will function precisely on BMWs producing more than the 500 horsepower range. 

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW E82 135i N54 3.0L
BMW E90 335i N54 3.0L
BMW E92 335i N54 3.0L
BMW E93 335i N54 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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