1951 Harley Davidson 45cid Flathead Engine Case And Heads For Sale

1951 Harley-Davidson 45ci Flathead Engine Long-Block Core - Matching Cases 51G1426Item Description:OverviewUp for sale is a genuine, vintage 1951 Harley-Davidson 45 cubic-inch (740cc) Sidevalve / Flathead V-twin engine core assembly.The official VIN/serial number stamped on the left case is 51G1426, identifying it as a correct 1951 production run engine originally built for a Harley-Davidson G-Series Servi-Car trike. This is an authentic, solid foundation for a period-correct restoration, a custom bobber, or a vintage chopper build.Factory-Matched Integrity:Serial Number: 51G1426Belly Numbers: MATCHING (351-1390) stamped clearly on the underside of both case halves.Note to Collectors: This is a 100% factory-mated pair line-bored together at the Milwaukee plant in 1951. It is a "born-together" factory survivor, not a pieced-together engine built from random swap-meet components.What is Included in This Sale:Left & Right Crankcases (Matching belly numbers)Cam Gear CoverLeft & Right Cylinder Heads