GSC Power Division Intake Valve Guides Subaru WRX/STI (GDB/GRF/GVF/VAB)

GSC Power Division Intake Valve Guides - Subaru WRX/STI (GDB/GRF/GVF/VAB)

GSC Power Division builds valvetrain hardware for engines that see serious boost and RPM, and these intake valve guides are designed for the EJ20/25 platform's toughest applications. The stopper style design keeps valve stem movement controlled under sustained high load, giving the Subaru WRX STI a more stable valvetrain foundation for built engines.

This listing covers the Subaru WRX STI (GDB/GRF/GVF/VAB) fitted with EJ205, EJ207, EJ255, EJ257 or EJ257B engines. SKU GSC3026-8 is the standard sized set of eight guides. The listing page also offers a standard single guide, plus oversized +0.001 inch and +0.003 inch single guides for worn or resized heads — select the correct option from the variant selector before ordering.

Note: Oversized guides are sold individually and are intended for heads that have been machined to accept them. Confirm your head's bore size before selecting an oversized variant.

Specifications

• Stopper style intake valve guide
• Compatible with EJ205, EJ207, EJ255, EJ257 and EJ257B engines
• Standard size available as a set of 8 or as a single guide
• Oversized options: +0.001 inch and +0.003 inch, sold individually
• Designed for high performance and forced induction EJ20/25 builds

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your engine code and cylinder head specification before ordering, particularly if selecting an oversized guide.

Not sure if these guides suit your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.