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GSC P-D EJ Series EJ205/EJ207/EJ258 Manganese Bronze Exhaust Valve Guide Stopper Style - Set 8 GSC Power Division
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GSC P-D EJ Series EJ205/EJ207/EJ258 Manganese Bronze Exhaust Valve Guide Stopper Style - Set 8

GSC3025-8
GSC3025-8
Valve Guides
20+ Units In Stock - Ships Next Business Day
$ 58.41 $ 49.65
$ 49.65

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

Request For Information

Have questions about GSC P-D EJ Series EJ205/EJ207/EJ258 Manganese Bronze Exhaust Valve Guide Stopper Style - Set 8? Fill out the form below and we'll get back to you by the next business day.
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