FV 40 mm Blow of Valve Black is proud to introduce our newest generation of "Push-Type" blow off valves, the FV Series, capable of supporting up to 430HP!   This new "Floating Valve" design is an engineering breakthrough that produces quicker valve response, increased valve travel and improved resistance to premature valve lift/boost leak!  

The unique floating valve design incorporates a durable , adjustable, dual-spring system and heat-resistant silicone diaphragm.  This allows the springs and diaphragm to better control the valve during boost.  By keeping one spring over and another under the diaphragm, the spring pre-load is less dependent on idle in light boost situations, making this the best performing 40mm blow off valve you can buy.  

Another beneficial feature is our adjustable, sliding top hat, allowing you to adjust the hose fitting location to suit your vehicle without completely disassembling the valve.    .

FITS:     

•  2008+    Impreza WRX - 2.0L Turbo 
• 2006 Mazda 6   - 2.3L Turbo
• 2007-2013 Mazda 3 - 2.3L Turbo
• 2007-2012 Mazda CX-7 -  2.3L Turbo

(if your Subaru is not on this list, please see our other listings for a flange that fits your vehicle)

Included:  

• (1) Flange Adapter
• (1) FV 40mm Blow off Valve
• (1) Gasket
• (1) 18" Silicone Hose
• (2) Screws/Nuts
• (2) T-Fittings
• (4) Hose Clamps

Shipping:

• Ships Same Day if order is placed Before 2PM EST, Next-Day if after 2PM.
• 1-3 Day USPS Priority Mail Service

Installation: