Subaru EJ20 JDM/Euro WRX & STi INTAKE AVCS Valve Guides

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      GSC Power-Division valve guides are made from a proprietary blend of Manganese Bronze and turned on dedicated precision CNC turning centers. With performance and aftermarket installation in mind, we hold extremely tight tolerances on through-hole concentricity to outside diameter which minimizes the required honing time for the installer. True-to-size outside diameters minimize honing of guide bosses on cylinder heads that don't require boss service. Our guides are easier to install and shaped to improve air flow instead of just copying OEM design.
      4 products

      4 products

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      GSC Power-Division Exhaust Valve Guide for Subaru EJ20/25 Series with stopper
      £48.45
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      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series
      £48.45
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      GSC Power-Division Traditional Exhaust Valve Guide for Subaru EJ20/25 Series
      £48.00
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      GSC Power-Division Intake Valve Guide for Subaru EJ20/25 Series with stopper
      £48.45
      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series.

      GSC Power-Division Exhaust Valve Guide for Subaru EJ20/25 Series with stopper

      GSC3025-8

      £48.45 Save £-48.45
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      Shipping calculated at checkout.

      GSC Power-Division Exhaust Valve Guide for Subaru EJ20/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), stopper style

      • Standard sized sold as set of 8 or individually
      • Oversized sold individually as +0.001" and +0.003" 
      GSC3025 Standard (in/mm)
      Total Length 1.873 / 47.57
      Outer Diameter 0.4357 / 11.07
      Valve Stem Diameter 6mm
      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series.

      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series

      GSC3028-8

      £48.45 Save £-48.45
      /
      Shipping calculated at checkout.

      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), smooth style

      • Standard sized sold as set of 8 or individually
      • Oversized sold individually as +0.001" and +0.003" 
      GSC3028 Standard (in/mm)
      Total Length 1.557 / 39.55
      Outer Diameter 0.4357 / 11.07
      Valve Stem Diameter 6mm
      GSC Power-Division Traditional Intake Valve Guide for Subaru EJ20/25 Series.

      GSC Power-Division Traditional Exhaust Valve Guide for Subaru EJ20/25 Series

      GSC3027-8

      £48.00 Save £-48.00
      /
      Shipping calculated at checkout.

      GSC Power-Division Traditional Exhaust Valve Guide for Subaru EJ20/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), smooth style

      • Standard sized sold as set of 8 or individually
      • Oversized sold individually as +0.001" and +0.003" 
      GSC3027 Standard (in/mm)
      Total Length 1.873 / 47.57
      Outer Diameter 0.4357 / 11.07
      Valve Stem Diameter 6mm
      GSC Power-Division Intake Valve Guide for Subaru EJ20/25 Series with stopper.

      GSC Power-Division Intake Valve Guide for Subaru EJ20/25 Series with stopper

      GSC3026-8

      £48.45 Save £-48.45
      /
      Shipping calculated at checkout.

      GSC Power-Division Intake Valve Guide for Subaru EJ20/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), stopper style

      • Standard sized sold as set of 8 or individually
      • Oversized sold individually as +0.001" and +0.003" 
      GSC3026 Standard (in/mm)
      Total Length 1.560 / 39.62
      Outer Diameter 0.4357 / 11.07
      Valve Stem Diameter 6mm