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GSC P-D Subaru EJ Series Viton 6mm Valve Stem Seal Set - Black Ops Auto Works
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GSC P-D Subaru EJ Series Viton 6mm Valve Stem Seal Set

GSC1022
GSC1022
Valve Seals
20+ Units In Stock - Ships Next Business Day
$ 20.61 $ 17.52
$ 17.52

SKU: 1022

GSC P-D Subaru EJ Series Viton 6mm Valve Stem Seal Set 1999-2015 Impreza WRX STI

GSC P-D Viton 6mm valve stem seals deliver reliable oil control for Subaru EJ series engines found in Impreza WRX and STI models from 1999 to 2015. This set replaces worn factory seals to stop oil burning and consumption during high-revving performance driving. Engineered for boosted applications these seals maintain tight fitment across intake and exhaust valves.

Key Features

  • Viton Material: Resists temperatures up to 400°F and harsh fuels oils for long-term durability in turbocharged EJ engines
  • Positive Seal Design: Provides airtight seal on 6mm stems preventing oil from entering combustion chamber under high boost up to 20psi
  • Complete 16-Piece Set: Includes seals for all 16 valves 8 intake 8 exhaust matching OEM dimensions for direct replacement
  • Precision Fit for EJ Series: Compatible with EJ20 EJ25 turbo and non-turbo variants used in WRX STI and select Impreza models
  • Low-Friction Teflon Coating: Reduces valve guide wear extends seal life during aggressive track or street use

Product Notes

  • Replace seals during valve spring or guide service for best results
  • Inspect valve guides for wear before installation to ensure proper sealing
  • Store in cool dry place away from oils prior to use

Installation Notes

  • Professional installation recommended.
  • Use compressed air through spark plug hole to hold valves during seal removal and install
  • Requires valve spring compressor tool OEM or aftermarket compatible with EJ heads

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 P-D?

  • Trusted by racers in SCCA drag and rally for reliable valvetrain components
  • Made in USA with tight tolerances for Subaru EJ applications
  • Backed by decades of engine building experience in high-boost setups

Frequently Asked Questions

  • Q: Does this fit 2004-2014 Subaru Impreza WRX STI EJ257?
    A: Yes GSC1022 seals match 6mm stems on EJ25 turbo engines in all listed WRX STI models from 2004-2015 including Limited trims
  • Q: What material are these valve seals?
    A: Viton fluoropolymer for superior heat resistance chemical stability and sealing in high-performance boosted EJ applications
  • Q: Is special tooling needed for install?
    A: Standard valve spring compressor and seal driver suffice professional shop install advised to avoid valve damage

Shipping & Handling

  • Method: Standard ground shipping
  • Availability: In stock - ships same or next business day
  • Packaging: Compact box 6 x 4 x 1 inches protective foam insert
  • Weight: 0.3 lbs

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