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GSC Power Division OEM replacement valve seat set for 4G63T engines comes as a set of 16 seats to restore cylinder head sealing to factory sizing. These seats are supplied as OEM-style replacements intended to fit the 4G63T combustion chambers and provide a straightforward refresh when performing head work or valve service. The set supports rebuilds requiring full-seat replacement.
GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16)
