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SKU: 3026
GSC Power-Division Subaru EJ205/EJ207/EJ259 Manganese Bronze Intake Valve Guide Stopper Style - Single 2002-2007 Impreza WRX STI
Engineered for Subaru EJ205 EJ207 EJ259 turbo engines in 2002-2007 Impreza WRX and STI models this GSC Power-Division manganese bronze intake valve guide stopper style single ensures secure valve stem alignment and heat dissipation during aggressive driving. Its robust construction handles elevated boost pressures and RPMs common in performance builds while maintaining precise valve sealing. Ideal for engine rebuilds or upgrades seeking dependable valvetrain integrity.
Key Features
- Manganese Bronze Material: Provides strong thermal conductivity and abrasion resistance to endure prolonged high-temperature operation in turbocharged EJ engines
- Stopper Style Design: Features integrated flange to lock guide position preventing migration under valve spring pressure and extreme loads
- Precision Machined Tolerances: Matches OEM specifications with enhanced fit for reduced guide wear and improved oil control at the valve stem
- Single Guide Format: Enables straightforward replacement of individual worn intake guides without full set purchase
- High Performance Validation: Tested in competitive Subaru drag and rally applications for consistent reliability
Product Notes
- Sold individually for targeted intake valve service
- Verify guide bore diameter before install for optimal press fit
- Packaged in protective sleeve for safe transit
Installation Notes
- Professional installation recommended.
- Hone valve guide bores to 0.315 inch diameter if needed for precise seating
- Compatible with GSC valve seats springs and retainers no additional hardware required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2004-2008 | Subaru | Forester | STI |
| 2005-2009 | Subaru | Legacy | GT Spec B |
Why Choose GSC Power-Division?
- Specializes in Subaru valvetrain parts with direct racer feedback
- Manufactures components for street and track dominance
- Employs CNC machining for exact dimensions and balance
Frequently Asked Questions
-
Q: Will this fit 2004-2007 USDM EJ257 STI engines?
A: Yes compatible with EJ257 intake positions matching EJ205 EJ207 EJ259 guide specs for WRX STI builds -
Q: How does manganese bronze compare to OEM guides?
A: Manganese bronze resists wear better than stock phosphor bronze with higher heat tolerance for boosted setups -
Q: What tools are needed for installation?
A: Valve guide driver puller and micrometer recommended alongside cylinder head disassembly
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic tube inside padded mailer 3 x 3 x 1 inches
- Weight: 0.07 lbs
GSC Power Division
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