GSC P-D Subaru EJ Series Viton 6mm Valve Stem Seal Set

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