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GSC P-D Subaru EJ Turbo DOHC Valve Spring & Ti Retainer Kit GSC Power Division GSC5743
GSC P-D Subaru EJ Turbo DOHC Valve Spring & Ti Retainer Kit GSC Power Division GSC5743
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GSC P-D Subaru EJ Turbo DOHC Valve Spring & Ti Retainer Kit

GSC5743
GSC5743
Valve Springs, Retainers
16 Units In Stock - Ships Next Business Day
$ 332.31 $ 282.46
$ 282.46

SKU: 5743 | UPC: GSC5743

GSC P-D Subaru EJ Turbo DOHC Valve Spring & Ti Retainer Kit 1999-2015 Impreza WRX STI

GSC Power-Division P-D series valve spring and titanium retainer kit upgrades Subaru EJ turbo DOHC engines for high boost and RPM. Designed for 1999-2015 Impreza WRX STI and compatible models it prevents valve float with precise pressures. Install this kit to maintain valve control during aggressive driving and tuning.

Key Features

  • Seat Pressure 120 lbs @ 1.750": Ensures stable valve seating and control at idle and low lift for everyday drivability
  • Open Pressure 280 lbs @ .440" lift: Locks valves shut at peak boost and high RPM to avoid float in turbo applications
  • Titanium Retainers: Cuts valvetrain weight by 60% over steel for faster revving and reduced stress on components
  • 10,400 RPM Capability: Supports extreme engine speeds safely with coil bind at 1.180" and 185 lbs/in rate
  • Swift Spring Material: Heat treated chrome silicon steel construction delivers consistent performance and fatigue resistance

Product Notes

  • Kit contains 16 valve springs 16 titanium retainers and 16 spring seats for complete DOHC head coverage
  • Black nitride coated retainers resist wear in high heat turbo environments
  • Packaged securely to prevent damage during transit

Installation Notes

  • Professional installation recommended.
  • Use GSC or Subaru-specific valve spring compressor tool for safe removal and install
  • Verify installed spring heights and retainer to guide clearance post-installation

This Part Fits

Year Make Model Submodel
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
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
2004-2014 Subaru Impreza WRX STI
2015 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015 Subaru WRX STI Limited
2006-2007 Subaru Impreza WRX Limited
2010-2014 Subaru Impreza WRX Limited
2009-2014 Subaru Impreza WRX Premium
2007 Subaru Impreza WRX STI Limited
2011-2014 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition
2006-2007 Subaru Impreza WRX TR

Why Choose GSC Power-Division?

  • Engineered by valvetrain specialists with rally and drag racing heritage
  • Components tested to extreme boost levels in real-world Subaru builds
  • Exact fitment with tolerances held to thousandths for OEM-like reliability

Frequently Asked Questions

  • Q: Does this fit 2004-2007 Subaru STI EJ257 heads?
    A: Yes covers all EJ turbo DOHC including 2004-2015 STI models with .440" max lift compatibility
  • Q: What materials are used in construction?
    A: Premium Swift chrome silicon valve springs paired with lightweight titanium retainers for strength and reduced mass
  • Q: What warranty coverage is provided?
    A: Lifetime warranty on valve springs against sag or failure when installed correctly

Shipping & Handling

  • Method: UPS or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Sturdy box 12 x 8 x 4 inches
  • Weight: 5.0 lbs

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