RCM 14/12mm Cylinder Head Stud Kit

This 14mm/12mm head stud kit from RCM uses aircraft-grade S99 steel studs to replace the standard 11mm Subaru head bolts, offering higher tensile strength and clamping force. Source material describes it as suited to higher-output EJ20/22/25 builds.

SKU: RCM157

EKS Fitment Advice

EKS currently identifies this product as Shared / Application Fitment

Compatibility of any product, greatly depends on model + year + trim + mods. Most Subaru’s are in different states of tune, so please contact Rich, from EKS to get clarity before purchasing.

Potential Applications

Subaru Impreza 1992-2000 (GC/GF), Subaru Impreza 2001-2002 (GD/GG Bugeye), Subaru Impreza 2003-2005 (GD/GG Blobeye), Subaru Impreza 2006-2007 (GD/GG Hawkeye), Subaru Impreza / WRX STI 2008-2013 (GR/GV), Subaru WRX STI 2014-2021 (VA/VAB), Subaru Forester 1996-2002 (SF), Subaru Forester 2003-2005 (SG early), Subaru Forester 2006-2007 (SG facelift), Subaru Forester 2008-2013 (SH), Subaru Legacy 1992-2003, Subaru Legacy 2003-2009 (BL/BP), Subaru Legacy 2009-2014 (BM/BR)

Full List of EKS Fitment Evidence Types

For context, here are all categories of fitment according to EKS.

1. Direct Fitment: means the product is currently listed as fitting the model/generation shown.
2. Shared / Application Fitment: means the product may suit shared Subaru platforms, engines, turbos, drivetrains, brakes, cooling/intake setups or modified applications.
3. Universal / Service Item: means the product is broadly useful for Subaru servicing, maintenance, workshop use or general ownership.
4. Needs Confirmation: means the product appears relevant, but final fitment may depend on extra details.