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SKU: 3027-8 | UPC: GSC3027-8
GSC P-D EJ Series 1999-2015 Subaru Impreza WRX STI Manganese Bronze Exhaust Valve Guide Traditional - Set 8
GSC Power-Division manganese bronze exhaust valve guides come as a set of 8 for EJ205 EJ207 EJ262 engines in Subaru Impreza models from 1999 to 2015 including WRX STI variants. These guides provide tight valve stem clearance for dependable sealing during high heat and pressure in track or street applications. Install them to support engine performance in boosted setups.
Key Features
- Manganese Bronze Material: Delivers wear resistance and heat dissipation for exhaust valves in EJ engines under high loads
- Traditional Interference Fit: Ensures secure hold without special tools for accurate valve alignment
- Precision Machined Tolerances: Meets OEM standards with reduced clearances to limit oil consumption and guide wear OD 0.315 inches ID 0.216 inches
- Complete Set of 8: Fits all exhaust positions on EJ205 EJ207 EJ262 cylinder heads MPN 3027-8
- Engineered for Endurance: Built to withstand higher boost and RPM in modified Subaru EJ20 EJ25 applications
Product Notes
- Inspect cylinder head valve guide bores before installation for proper sizing
- Use assembly lube on valve stems during guide installation
- Ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Ream or hone valve guide bores to match guide OD of 0.315 inches if needed
- Compatible with stock or aftermarket valves 5mm to 6mm stems
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2001 | Subaru | Impreza | L |
| 1999-2004 | Subaru | Impreza | Outback |
| 1999-2005 | Subaru | Impreza | RS |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2014 | Subaru | Impreza | WRX |
| 2004-2014 | Subaru | Impreza | WRX STI |
| 2005 | Saab | 9-2X | Aero |
| 2005-2011 | Subaru | Impreza | Outback Sport |
| 2006-2007 | Subaru | Impreza | WRX Limited |
| 2006-2007 | Subaru | Impreza | WRX TR |
| 2006-2011 | Subaru | Impreza | 2.5i |
| 2009-2010 | Subaru | Impreza | 2.5 GT |
| 2009-2014 | Subaru | Impreza | WRX Premium |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2010-2011 | Subaru | Impreza | 2.5i Premium |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2012-2014 | Subaru | Impreza | Base |
| 2012-2014 | Subaru | Impreza | Limited |
| 2012-2014 | Subaru | Impreza | Premium |
| 2012-2014 | Subaru | Impreza | Sport Limited |
| 2012-2014 | Subaru | Impreza | Sport Premium |
| 2015 | Subaru | WRX STI | Base |
| 2015 | Subaru | WRX STI | Launch Edition |
| 2015 | Subaru | WRX STI | Limited |
Why Choose GSC Power-Division?
- Leaders in Subaru valvetrain components with proven track records in racing
- Manufactured to exacting standards for daily drivers and race engines
- Directly tested in high-boost EJ applications for real-world reliability
Frequently Asked Questions
-
Q: Does this fit EJ255 EJ257 engines in later WRX STI models?
A: Fits EJ205 EJ207 EJ262 exhaust guides commonly used across EJ20 EJ25 Subaru engines listed in fitment -
Q: What is the inner diameter for valve stems?
A: Designed for 5mm to 6mm stems with ID of 0.216 inches standard for these guides -
Q: Is reaming required during install?
A: Measure bores first guides have OD 0.315 inches may need light honing for perfect fit
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined box 6 x 4 x 2 inches
- Weight: 0.5 lbs
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