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SKU: TS-0505-2001 | UPC: 9329677010282
Turbosmart WG40 3PSI Inner Spring Brown/Black 2002-2021 Subaru WRX STI Evo
This Turbosmart WG40 3PSI inner spring in brown/black delivers precise low-end boost control for 40mm Turbosmart wastegates. It fits popular turbocharged vehicles like Subaru WRX STI Mitsubishi Lancer Evolution and Nissan models with compatible wastegates. Engineered for durability it maintains consistent performance under high heat and pressure.
Key Features
- 3 PSI Rating: Establishes accurate base boost pressure ideal for street and track setups requiring fine-tuned low boost levels
- Brown/Black Color Coding: Quick visual identification during assembly and maintenance prevents mix-ups with other spring strengths
- WG40 Compatibility: Direct fit for all Turbosmart 40mm wastegates including Gen V Race Compact and Plumb Back models
- High-Temperature Spring Steel: Withstands extreme exhaust temperatures up to 1000C for long-lasting spring tension and reliability
- Precision Wound: Consistent coil tension ensures repeatable boost response across thousands of cycles
Product Notes
- Use with outer springs to achieve desired total boost pressure combinations
- Inspect spring seat and diaphragm during replacement for optimal sealing
- Packed in protective sleeve ships flat to minimize damage
Installation Notes
- Professional installation recommended.
- Remove wastegate actuator compress spring carefully using dedicated tool
- Compatible with factory Turbosmart hardware no additional parts required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza WRX | All |
| 2004-2021 | Subaru | Impreza WRX STI | All |
| 2003-2005 | Mitsubishi | Lancer Evolution | VIII MR |
| 2006-2006 | Mitsubishi | Lancer Evolution | IX MR |
| 2003-2008 | Nissan | 350Z | Track |
| 1989-2002 | Nissan | Skyline | R32 R33 R34 GT-R |
| 1995-2002 | Mitsubishi | Eclipse | GSX |
Why Choose Turbosmart?
- Hand-crafted in Sydney Australia since 1997 with strict quality control
- Rigorous in-house testing exceeds industry standards for reliability
- Innovative design backed by dedicated research facility and staff expertise
Frequently Asked Questions
-
Q: Does this spring fit all Turbosmart 40mm wastegates?
A: Yes it installs directly in Gen V WG40 Race Compact Plumb Back and IWG75 Series wastegates for seamless boost adjustment -
Q: What material is the spring made from?
A: High-grade spring steel heat-treated for superior fatigue resistance and corrosion protection in harsh turbo environments -
Q: What warranty applies?
A: Lifetime warranty against manufacturing defects when installed and used as directed contact Turbosmart for claims
Shipping & Handling
- Method: USPS First Class or UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective poly sleeve in 4 x 4 x 1 inch box
- Weight: 0.2 lbs
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