GSC Valve Spring Seats OEM Style Replacement - Subaru EJ Honda Optimal size settings for usage

Optimal size settings for usage i sports such as drifting

gradual transitions from the tapered turbo adapter all the way to the intercooler

GSC's valve guides are made from true C67410 Manganese Bronze and turned on a dedicated precision CNC turning center

Drag racing requires a Single Mass SFI approved Flywheel to be included with each kit when the original design is Dual Mass

GSC Valve Spring Seats OEM Style Replacement - Subaru EJ Honda Optimal size settings for usageGSC Power Division Spring Seats are now available for the Subaru Turbo EJ series. The GSC1005 is an OEM replacement stamped spring seat, usable 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.