GSC Power-Division Traditional Intake Valve Guide – Subaru EJ20/EJ25

GSC Power-Division Traditional Intake Valve Guide – Subaru EJ20/25 Series (Part # GSC3028)

The GSC Power-Division GSC3028 Traditional Intake Valve Guide is a high-quality, smooth-style replacement designed for Subaru EJ20 and EJ25 series engines, including EJ205, EJ207, EJ255, EJ257, and EJ257B. Ideal for performance engine builds and OEM-style rebuilds, these guides help maintain valve alignment, sealing, and long-term durability under high load and temperature.

Made from precision-machined material with tight tolerances, these guides support 6 mm valve stems and are available in both standard and oversized configurations for head machining flexibility.

Key Features

• Traditional smooth-style intake valve guide for Subaru EJ engines
• Available in standard and oversized (+0.001", +0.003") variants
• Precision-machined for stability, valve control, and wear resistance
• Supports 6 mm valve stems
• Sold as a set of 8 or individually (for oversized options)

Technical Specifications

Vehicle Compatibility

• Subaru WRX – EJ205 / EJ207
• Subaru WRX STI – EJ255 / EJ257 / EJ257B
• Subaru Forester XT / Liberty GT – EJ Turbo Platforms

Note: Oversized guides are sold individually in +0.001" and +0.003" sizing. Always inspect and measure your cylinder head guide bores before selecting oversize options.

Warning: This product contains materials such as Nickel (Metallic), which are known to the State of California to cause cancer and reproductive harm. See California Proposition 65 for more information.