
Manufacturer reference photos may show other components. Your order includes the sale unit described here.
GSC Power Division · New
GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16)
MPN 1004 · Store SKU gsc1004
Sold as one set of 16.
Supplier stock checked 11/8/2026, 2:01:47 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
GSC Replacement Valve Spring Seats, OEM replacement Valve Spring Seats are perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives .
Manufacturer fitment & guides
Check 1004 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y