-5%
Click to zoom in
SKU: 11900451
GReddy Aluminum Weld-On BOV Flange 11900451 Universal Turbo Accessory
The GReddy Aluminum Weld-On BOV Flange 11900451 provides a direct mounting point for GReddy blow-off valves on custom charge pipes. Weld it onto aluminum or stainless steel piping in forced induction systems on vehicles like Subaru WRX STI Nissan 350Z and Mitsubishi Lancer Evolution for dependable operation. Ensures airtight seal to handle high boost levels without leaks during throttle lifts.
Key Features
- Billet Aluminum Construction: Lightweight durable material resists corrosion and high temperatures in turbo environments
- Precision Machined Interface: Exact tolerances match GReddy Type-S Type-RS Type-RZ and Profec BOV outlets for flawless alignment
- Included Hardware: Comes with silicone gasket and stainless steel bolts for immediate secure assembly
- Weld-On Design: Fits 44mm OD piping common in aftermarket intercooler setups for straightforward integration
- Compact Profile: Minimal added bulk preserves hood clearance and piping flow dynamics
Product Notes
- Requires proper welding preparation on clean pipe surfaces for strongest bond
- Inspect gasket condition regularly for long-term performance
- Store in dry area to prevent surface oxidation
Installation Notes
- Professional installation recommended.
- TIG weld preferred for aluminum pipes to avoid warping
- Hardware compatible with all GReddy BOV models bolts torque to 8-10 ft-lbs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX STI |
| 2003-2009 | Nissan | 350Z | All |
| 2003-2006 | Mitsubishi | Lancer | Evolution VIII IX |
| 1995-2002 | Nissan | 240SX | S14 SE S15 |
| 2004-2021 | Subaru | WRX | All Turbo |
| 2007-2015 | Mitsubishi | Lancer | Evolution X |
Why Choose GReddy?
- Established JDM performance leader since 1977 with motorsport heritage
- Focus on forced induction components tested in racing applications
- CNC precision manufacturing ensures consistent quality and fit
Frequently Asked Questions
-
Q: Will this flange work with my GReddy Type RS BOV on a Subaru WRX?
A: Yes it bolts directly to Type RS and other GReddy BOVs after welding to your charge pipe -
Q: What type of welding is needed for installation?
A: TIG welding on aluminum or stainless pipes works best clean surface first for full penetration -
Q: Does it include mounting hardware?
A: Yes includes silicone gasket and stainless bolts ready for BOV attachment
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Compact box 5 x 4 x 2 inches
- Weight: 0.22 lbs
Blow Off Valve Accessories
Blow off valve accessories let you customize and upgrade your BOV system for better response, louder sound, or improved sealing. From recirculating adapters to replacement springs and diaphragms, these parts keep your blow off valve performing at its best. Popular ProductsTop BOV accessories include replacement piston kits, diaphragm rebuild kits, flange adapters, and sound pipes. Brands like Turbosmart, Tial, and HKS offer direct-replacement accessories compatible with their BOV lines. What blow off valve accessories do I need?Common BOV accessories include replacement O-rings and diaphragms for worn seals, flange adapters for different pipe diameters, and spring kits for adjusting cracking pressure to match your boost level. Can I make my blow off valve louder?Yes, venting your BOV to atmosphere instead of recirculating produces a louder sound. Atmospheric vent kits and sound pipes are available for most bolt-on BOV units to maximize the flutter or horn sound. Explore related cate...
View Blow Off Valve Accessories Products
Forced Induction
Forced induction systems encompass every method of pushing air into an engine at greater than atmospheric pressure, including turbochargers driven by exhaust energy, superchargers driven mechanically by the crankshaft, and prochargers using centrifugal designs belt-driven at higher ratios than traditional roots-type blowers, with each approach delivering a significant increase in air mass per cylinder fill that allows proportionally more fuel to be burned and more power to be produced without increasing engine displacement. Adding 10 PSI of boost pressure to a naturally aspirated engine can increase power output by 50 to 70 percent depending on the engine's breathing efficiency and the quality of the supporting hardware, making forced induction the most power-dense modification available relative to cost and complexity. This collection covers complete forced induction systems, turbocharger and supercharger hardware, intercoolers, blow-off valves, wastegates, and supporting component...
View Forced Induction ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
