Crankshaft, Piston Mercury 50/60 JET 40/45 (3 CYL), 40 JET (OP094500+), 45 JET (9973100-OP094499), 55 (3CYL) (9973100+), 60 (3 CYL) (9973100+), 60 (3 CYL) BIGFOOT (9973100-OP325499) 2-stroke