SKU: TS-0203-1222 | UPC: 9329677009699
Turbosmart BOV Kompact Plumb Back-25mm for 2002-2007 Subaru Impreza WRX/STI, 2003-2006 Mitsubishi Lancer Evolution
The Turbosmart BOV Kompact Plumb Back-25mm is a precision blow-off valve for plumb-back recirculation on turbocharged vehicles like 2002-2007 Subaru Impreza WRX and STI, 2003-2006 Mitsubishi Lancer Evolution VIII/IX, and Nissan SR20DET models. It holds boost firmly during shifts and releases pressure rapidly to maintain fast turbo spool and consistent throttle response. Built in Australia with billet aluminum and advanced diaphragm for long-term reliability in demanding conditions.
Key Features
- Compact Size: 75mm base diameter and 75mm height fit tight engine bays on WRX, STI, and Evo models without modifications.
- Reinforced Diaphragm: Non-compressible PTFE piston and rolling diaphragm design deliver instant response and seal up to 200psi boost.
- Adjustable Preload: Tunable spring tension matches various boost levels for precise control on stock or modified turbos.
- Plumb Back Design: Secure hose outlet recirculates air silently back to intake pipe, maintaining efficiency and smoothness.
- Lightweight Build: 145g aluminum construction reduces hood slam and improves overall engine bay balance.
Product Notes
- Confirm 25mm ID boost hose compatibility before purchase.
- Spring upgrades available separately for boost over 25psi.
- Protect from debris during track use for extended life.
Installation Notes
- Professional installation recommended.
- Bolt to factory or Turbosmart bracket locations using included hardware.
- Route 25mm outlet hose to intake pipe and secure with clamps to avoid boost leaks.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | STI |
| 2004-2008 | Subaru | Forester | XT |
| 2003-2005 | Mitsubishi | Lancer | Evolution VIII |
| 2005-2006 | Mitsubishi | Lancer | Evolution IX |
| 1995-1998 | Nissan | 240SX | S14 SR20DET |
Why Choose Turbosmart?
- Hand-crafted in Sydney Australia factory since 1997 with strict quality control.
- Innovative design and rigorous testing ensure performance beyond expectations.
- Extraordinary after-sales support backs every product.
Frequently Asked Questions
- Q: Does this fit 2004 Subaru STI?
A: Yes, direct fit for 2004-2007 Impreza STI with 25mm hose and factory bracket location. - Q: What materials are used?
A: Billet aluminum body, stainless steel spring, and PTFE piston for corrosion resistance and durability. - Q: What warranty applies?
A: Limited lifetime warranty covers manufacturing defects when installed and maintained properly.
Shipping & Handling
- Method: UPS Ground, FedEx, or USPS
- Availability: In stock – ships same or next business day
- Packaging: Secure retail box 5.1 x 3.9 x 3.2 inches
- Weight: 8.8 oz
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