Title: Vintage Speedaire / DeVilbiss Twin-Cylinder Air Compressor Pump (Model B37)Description:Selling a vintage, heavy-duty cast iron Speedaire (Dayton Electric / DeVilbiss contract) single-stage twin-cylinder air compressor pump block. Perfect for a classic restoration project or as a drop-in replacement pump.Condition & Features:Mechanical Status: Excellent internal shape. The flywheel spins completely smooth by hand and the pump still generates great compression/suction from the head ports.Markings/Authenticity: Stamped "B 37" on the crankcase side, "1897" on the mounting foot casting, and DeVilbiss part number "1217B" cast into the flywheel spoke.As-Is Details: Shows standard surface rust and aluminum oxidation cosmetics from long-term storage. Needs a replacement flywheel set screw and a cover plate over the felt intake pad.Great bare pump block for someone building a custom garage setup or repairing an old line. Selling as-is for local pickup.