GSC 4G63 OEM Replacement Valve Spring Seats (1004) StopTech • PT5558 Ball Bearing Turbo

• PT5558 Ball Bearing Turbo

• 2004-2006 STi (w/ WRX Tumbler)

Part Number: GSC5256 Springs: Dual Retainers: Titanium Coil Bind: 0

APR carbon fiber radiator cooling plates for BRZ/FRS/86 reduce under-hood temps and channel air flow directly to the radiator

but it was updated with a "B" part number to accommodate aftermarket fuel rails

GSC 4G63 OEM Replacement Valve Spring Seats (1004) StopTech • PT5558 Ball Bearing TurboGSC Power Division OEM replacement valve spring seat set for the 4G63 Evo and 1G 2G DSM. Perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives. Same thickness as OEM, so no spring pressure change when using these. Sold as a set of 16. Vehicle Fitment: Mitsubishi 4G63 1992 2006 Evolution I IX 1990 1999 Eclipse GST GSX 1990 1998 Talon TSi 1990 1994 Laser RS 1991 1992 Galant VR4 Includes: (16) Valve Spring