Valve Seat 4/ Set - Chevy BBC 454 | Exhaust +0.010 | (3021) Pinit $40.40 SKU: PCE283.1003 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. Quantity -+ Add to Cart Details Brand:SpeedmasterPart Number:PCE283.1003Part Type:Valve SeatValve Seat Location:Exhaust SeatQuantity:Sold as a set. DetailsBackDetailsBrand:SpeedmasterPart Number:PCE283.1003Part Type:Valve SeatValve Seat Location:Exhaust SeatQuantity:Sold as a set.See MoreSee Less