The Hispano-Suiza H6B engine, one of the most famous mills of the Classic Era, was an aircraft-derived design with machined steel cylinders with integral combustion chambers, fitted in a cast aluminium block with two valves per cylinder, driven by a single overhead camshaft, and a pressure-lubricated crankshaft turning on seven main bearings. The result was 135 horsepower and truly impressive torque and smoothness, making the Hispano-Suiza one of the most powerful and famed European classics of its era.

The H6B engine here, number 301168, has the proper matching stampings on both the crankcase and the block. It would be an ideal spare or source of parts for the dedicated Hispano-Suiza aficionado.