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SKU: 3025-8
GSC P-D EJ Series EJ205/EJ207/EJ258 Manganese Bronze Exhaust Valve Guide Stopper Style - Set 8 Fits 1999-2015 Subaru Impreza WRX STI Saab 9-2X
GSC Power-Division 3025-8 Exhaust Valve Guides deliver manganese bronze construction in a stopper style design for EJ205 EJ207 EJ258 engines found in Subaru Impreza WRX STI models and Saab 9-2X Aero. These guides provide exact fitment and enhanced durability under high heat and rev conditions for reliable performance in tuned engines. Set of 8 covers a complete cylinder head rebuild.
Key Features
- Manganese Bronze Material: Handles exhaust side temperatures with low wear and high thermal conductivity for longer guide life in performance applications
- Stopper Style Design: Locks valve stem position precisely to prevent side loading and maintain seal integrity during extreme valve action
- Precision Machined Tolerances: ID honed to OEM specs plus for minimal friction and optimal oil flow in EJ205 EJ207 EJ258 heads
- Direct OEM Replacement: Matches factory dimensions for drop-in installation on listed Subaru and Saab models without head modifications
- Set of 8 Pieces: Full kit for one cylinder head ensuring balanced performance across all exhaust valves
Product Notes
- Inspect valve guide bores and hone to size prior to installation for best results
- Apply assembly lube to guides during install to reduce initial wear
- Packaged securely to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Hone guide bores to 0.3125-0.3130 inch for proper interference fit
- Compatible with stock valve seals retainers and springs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005 | Saab | 9-2X | Aero |
| 2009-2010 | Subaru | Impreza | 2.5 GT |
| 2006-2011 | Subaru | Impreza | 2.5i |
| 2010-2011 | Subaru | Impreza | 2.5i Premium |
| 2012-2014 | Subaru | Impreza | Base |
| 1999-2001 | Subaru | Impreza | L |
| 2012-2014 | Subaru | Impreza | Limited |
| 1999-2004 | Subaru | Impreza | Outback |
| 2005-2011 | Subaru | Impreza | Outback Sport |
| 2012-2014 | Subaru | Impreza | Premium |
| 1999-2005 | Subaru | Impreza | RS |
| 2012-2014 | Subaru | Impreza | Sport Limited |
| 2012-2014 | Subaru | Impreza | Sport Premium |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2014 | Subaru | Impreza | WRX |
| 2006-2007,2010-2014 | Subaru | Impreza | WRX Limited |
| 2009-2014 | Subaru | Impreza | WRX Premium |
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2007,2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2006-2007 | Subaru | Impreza | WRX TR |
| 2015 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015 | Subaru | WRX STI | Limited |
Why Choose GSC Power-Division?
- Proven in professional racing with Subaru WRX STI teams worldwide
- Manufactured from premium alloys for extreme heat and boost endurance
- Engineered in USA with tight tolerances for consistent valvetrain operation
Frequently Asked Questions
-
Q: Does this fit my 2004 Subaru Impreza WRX STI EJ255 engine?
A: Yes fits EJ205 EJ207 EJ258 exhaust side including EJ255 EJ257 variants in listed Impreza WRX STI models from 2004-2014 -
Q: What is the material and guide length?
A: Manganese bronze alloy with stopper style length of 1.181 inches overall for precise exhaust valve control -
Q: What warranty applies and install tips?
A: GSC offers one year defect warranty press fit requires guide driver tool and proper honing for seal
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic tray in 6 x 4 x 2 inch box
- Weight: 0.8 lbs
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