SKU: TIA400-2
Walbro 400lph 39/50 DC/SS Pump/Kit Package for 2002-2014 Subaru WRX STI
The Walbro 400lph 39/50 DC/SS Pump/Kit Package delivers high-flow fuel for 2002-2014 Subaru Impreza WRX STI and select models with turbocharged 2.0L or 2.5L engines. This in-tank assembly supports larger turbos injectors and boost levels up to 600+ wheel horsepower with 400LPH free flow and 312LPH at 43 PSI. Direct installation into the factory saddle tank ensures reliable performance for street and track use.
Key Features
- 400 LPH Flow Rate: Supplies 400 liters per hour free flow with 312 LPH at 43 PSI to power engines exceeding 600 wheel horsepower
- Dual Circuit Design: Works with return-style and returnless fuel systems for compatibility across modified Subaru setups
- Stainless Steel Internals: Resists corrosion from E85 race gas and ethanol blends for long-term durability
- Complete Installation Kit: Contains pump pre-filter sock wiring harness O-rings hose clamps and hardware for straightforward plug-and-play assembly
- Quiet Efficient Operation: Turbine impeller provides steady pressure under load with minimal noise
Product Notes
- Pair with adjustable fuel pressure regulator for precise boost and power management
- Inspect tank for debris during install to promote extended pump life
- Packaged to arrive damage-free with all components intact
Installation Notes
- Professional installation recommended.
- Relieve system pressure and drop fuel tank to access pump assembly
- Compatible with OEM wiring connector and mounting bracket
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2005 | Subaru | Impreza | WRX Base/Sedan/Wagon 2.0L Turbo |
| 2006-2007 | Subaru | Impreza | WRX Limited/TR/Sedan/Wagon 2.5L Turbo |
| 2004-2007 | Subaru | Impreza | STI Hatchback/Sedan 2.5L Turbo |
| 2008-2014 | Subaru | Impreza | STI Hatchback/Sedan 2.5L Turbo |
| 2005-2009 | Subaru | Legacy | GT 2.5L Turbo |
Why Choose Walbro?
- Backed by decades of fuel system expertise in OEM and aftermarket
- Used in professional racing teams for reliable high-demand performance
- Precision-engineered turbine technology for consistent fuel delivery
Frequently Asked Questions
- Q: Does this pump fit 2006 STI models?
A: Yes it drops directly into 2004-2014 STI factory tank with matching OEM hanger assembly - Q: Can it handle E85 fuel?
A: Yes stainless steel components and materials are fully compatible with E85 and methanol blends - Q: What supporting mods are needed?
A: Works best with larger injectors adjustable FPR and tune. Supports stock systems up to moderate boost
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Compact box measures 10 x 6 x 6 inches
- Weight: 2.2 lbs
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