Valve Seat 4/ Set - Chevy BBC 454 | Intake +0.010 | (3021) Pinit $40.40 SKU: PCE283.1004 These replacement valve seats are just like the originals. Made from premium materials and built to exacting tolerances, they replace your existing worn or damaged valve seats. Out of Stock Quantity -+ Details Brand:SpeedmasterPart Number:PCE283.1004Part Type:Valve SeatValve Seat Location:Exhaust SeatQuantity:Sold as a set. DetailsBackDetailsBrand:SpeedmasterPart Number:PCE283.1004Part Type:Valve SeatValve Seat Location:Exhaust SeatQuantity:Sold as a set.See MoreSee Less