
VTT Black Tial BOV Spring
Free US shipping on orders over $250
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
Genuine Black TiAL BOV Spring
Use this genuine TiAL replacement spring in compatible TiAL blow-off valves where the black spring rate matches the engine-vacuum and valve configuration.
Application
Commonly used on BMW N54 charge-pipe systems fitted with a TiAL BOV. The correct spring can help the valve open fully and reduce compressor flutter or surge during throttle closure.
Idle Behavior
The black spring may hold the BOV slightly open at idle. This can be normal for the selected spring and valve configuration. If a closed-at-idle position is required, spring shimming and final setup should be completed carefully.
Important Information
Spring choice depends on engine vacuum, valve model, charge-pipe routing, and vehicle setup. Confirm TiAL compatibility and the required spring rate before ordering. This listing is for the spring only.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.






