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Audi A4 Blow Off Valves

Looking for aftermarket parts to modify or upgrade your Audi A4 with blow off valves? At Tunersports.com we carry a huge selection of the top name brand performance blow off valf parts and accessories for your A4.

Whether you have a 1997 or 2020 Audi A4 in Base to Titanium trim we have you covered. We have 10 blow off valves available to mod your A4. All parts have free shipping to the Continental US 48 States.

All A4 Blow Off Valf Parts:

Only show in-stock parts

Go Fast Bits Deceptor Blow Off Valves

Go Fast Bits
Go Fast Bits Deceptor Blow Off Valves T9525
IN STOCK - DROPSHIPS
T9525
Control the sound of your BOV "ON-THE-FLY." Go on, admit it. There are times you wish you could have that signature turbo blow off sound, but you're not prepared to listen to it all the time. GFB's Deceptor Pro II delivers just what you need ? the ability to control how loud your BOV sound is, from ...
GFB Deceptor Pro II Blow Off Valve - 25mm Inlet/25mm Outlet
1997-2005 Audi A4 Base
2003-2006 Audi A4 Cabriolet
$441.00
Details

Go Fast Bits DV+ Diverter Valves

Go Fast Bits
Go Fast Bits DV+ Diverter Valves T9301
IN STOCK
T9301
The TMS range from GFB is designed specifically for the purpose of turbo lag reduction, and improving throttle response. Tests show TMS features can return?engine?to peak boost up to 30 percent faster than a factory diverter valve when shifting gears....
GFB Diverter Valve (25mm Bosch Diverter Valve Replacement)
1997-2005 Audi A4 Base
2003-2006 Audi A4 Cabriolet
$159.54
Details
Go Fast Bits DV+ Diverter Valves T9351
IN STOCK
T9351
GFB's DV plus design solves the longevity and boost leaking issues that are common with factory diverter valves, and also changes the operation method to "pilot actuation" to ensure better performance on stock or modified engines. Furthermore, these benefits won't cost you the Earth! Rather than thr...
GFB Diverter Valve DV+ 2.0T VAG Applications (Direct Replacement)
2005-2014 Audi A4 Base
2007-2009 Audi A4 Cabriolet
2015-2015 Audi A4 Prestige
2015-2020 Audi A4 Premium / Premium Plus
2017-2020 Audi A4 Prestige
2019-2019 Audi A4 Titanium
$143.10
Details
Go Fast Bits DV+ Diverter Valves T9381
IN STOCK
T9381
GFB Diverter Valve DV+ Volkswagen TSI/TFSI w/Pierburg Diverter Valve
2005-2014 Audi A4 Base
2007-2009 Audi A4 Cabriolet
2015-2015 Audi A4 Prestige
2015-2020 Audi A4 Premium / Premium Plus
2017-2020 Audi A4 Prestige
2019-2019 Audi A4 Titanium
$198.00
Details
Go Fast Bits DV+ Diverter Valves T9451
IN STOCK
T9451
VTA BOVs vent to atmosphere to make the signature turbo blow-off sound, where the DV plus recirculates the air to keep it quiet. Each valve in the VTA range is designed specifically for the applications we list them for, ensuring the best fit and performance....
GFB Diverter Valve ATMO DV+ 2.0T FSI & TSI VAG Applications (Direct Replacement)
2009-2009 Audi A4 Cabriolet
2009-2014 Audi A4 Base
2015-2015 Audi A4 Prestige
2015-2020 Audi A4 Premium / Premium Plus
2017-2020 Audi A4 Prestige
2019-2019 Audi A4 Titanium
$190.80
Details

Go Fast Bits Mach 2 BOV Kits

Go Fast Bits
Go Fast Bits Mach 2 BOV Kits T9125
IN STOCK - LOW
T9125
The Mach 2 direct fit bolt-on range covers a huge list of popular vehicles. You can also purchase a variety of hose and flange adaptors for custom fitments. Please check the application guide to find the Mach 2 model for YOUR car!...
GFB Mach 2 TMS Recirculating Diverter Valve - 25mm Inlet/25mm Outlet
1997-2005 Audi A4 Base
2003-2006 Audi A4 Cabriolet
$166.50
Details

Go Fast Bits Respons BOV Kits

Go Fast Bits
Go Fast Bits Respons BOV Kits T9025
IN STOCK
T9025
If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow-off sound without having to put up with the issues. Like all GFB valves, the Respons ...
GFB Audi/VW 1.8T TMS Respons Blow Off Valve Kit
1997-2005 Audi A4 Base
2003-2006 Audi A4 Cabriolet
$298.80
Details

Go Fast Bits TMS Blow Off Valves

Go Fast Bits
Go Fast Bits TMS Blow Off Valves T9225
IN STOCK
T9225
Want it loud? Quiet? In between? GFB Hybrid kits include a pair of blanking plugs that allow the valve to be configured for full recirculation venting, 50/50 (atmosphere / recirc), or full atmosphere venting....
GFB HYBRID TMS Dual Port 20mm Inlet/20mm Outlet 97-05 VW Golf GTI 1.8T
1997-2005 Audi A4 Base
2003-2006 Audi A4 Cabriolet
$220.50
Details

Turbosmart BOV - Kompact Dual Port

Turbosmart
Turbosmart BOV - Kompact Dual Port TS-0223-1063
IN STOCK
TS-0223-1063
Turbosmart BOV Kompact EM Dual Port - VW GTI/Golf R MK7
2008-2009 Audi A4 Cabriolet
2008-2014 Audi A4 Base
2015-2015 Audi A4 Prestige
2015-2018 Audi A4 Premium / Premium Plus
2017-2018 Audi A4 Prestige
$259.95
Details

Turbosmart BOV - Kompact Plumb Back

Turbosmart
Turbosmart BOV - Kompact Plumb Back TS-0223-1263
IN STOCK
TS-0223-1263
Turbosmart BOV Kompact EM Plumb Back - VW GTI/Golf R MK7
2008-2009 Audi A4 Cabriolet
2008-2014 Audi A4 Base
2015-2015 Audi A4 Prestige
2015-2018 Audi A4 Premium / Premium Plus
2017-2018 Audi A4 Prestige
$233.95
Details