GSC Power-Division Subaru EJ Valve Spring Seats, OEM Replacement (gsc1005) 4006 100 Percent CAD Designed Custom

100 Percent CAD Designed Custom Factory Fitment

a lot of performance was left on the table from the factory

Since Nissan and Infiniti don't sell these bushings separately

Outflows Factory Intake by 26%

27 Pre-Programmed Modes

GSC Power-Division Subaru EJ Valve Spring Seats, OEM Replacement (gsc1005) 4006 100 Percent CAD Designed CustomGSC Power Division Spring Seats are now available for the Subaru Turbo EJ series. The GSC1005 is an OEM replacement stamped spring seat, useable with GSC Power Division 5043 or 5743 upgraded valve spring kits or stock springs as an alternative to expensive dealership parts. Sold as a set of 16. Features: Designed to deliver trouble free, consistent performance Right for your vehicle and lifestyle Made from high quality materials for ultimate