15% GSC P-D Nissan TB48 Ti Retainer Steel Spring Seat HP Conical Valve Spring Kit GSC Power Division Sale! from 81090 95400 /per Qty. Add to Cart This item is either made to order or has limited inventory. Please reach out to confirm lead times if needed. GSC P-D Nissan TB48 Ti Retainer Steel Spring Seat HP Conical Valve Spring Kit