How Much is a Harley-Davidson 45 Flathead Worth at Auction?

The Harley-Davidson 45 Flathead represents a highly variable segment of the classic car market, with limited market activity reflected in 7 auction sales over the past 12 months. The median sale price currently sits at $18,000, with values ranging from $14,950 for entry-level examples to $27,500 for collector-grade vehicles. This 70% price spread indicates significant variation in condition, mileage, and provenance among sold examples.

As a Harley-Davidson 45 Flathead, this vehicle occupies a accessible classic segment. Since its introduction in 1936, it has become a staple for Harley-Davidson enthusiasts.

The availability of 45ci Side-Valve V-Twin and 45ci Flathead V-Twin engines and (3-speed) transmissions significantly impacts the resale value. Enthusiasts often prioritize specific mechanical configurations, with manual transmissions and high-performance engines typically commanding a premium in the current auction climate.