GSC Valve Spring Seat Set Mitsubishi EVO 8/9, Eclipse Turbo 89-99


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Valve Spring Seat: OEM Standard


Set of 16; OEM Standard or Chromoly Oversized

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GSC OEM Standard
OEM replacement 4G63 Mitsubishi Valve spring seat set. 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.

GSC Chromoly +.035in Oversized
The GSC4041 CNC turned Chromoly valve spring seats are meant for the 4G63 platforms pushing to the absolute limits, with an additional .035



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GSC Valve Spring Seat Set
Set of 16; OEM Standard or Chromoly Oversized
Mitsubishi EVO 8/9, Eclipse Turbo 89-99
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