(2 piece rear main seal) GEV IV This is a remanufactured 7.4L 454 gen4 2 piece rear seal (mechanical fuel pump type) marine engine. REVERSE ROTATION AVALIABLE FOR 300.00 DOLLARS7.4 454 Gen. IV Engine Generation 4$3,500.00PriceSize*SelectQuantity*Add to CartDetails Short Block (with no heads) Long Block (with heads)