Overview Product Description Modine 3.3" Dia. Replacement Motor 0.78 Amps, 1500 RPM 115 Volts, 60 Hz Thermally Protected Rotation: CW Viewing Shaft End Shaft: 5/16" Dia. x 2 1/4" Long 4 Mounting Studs On Shaft End 3 Wire Leads 36" Long CROSS REFERENCES: 9F10227A, 12751, 7163-9051, 71639051, 8353910330 OEM Direct Replacement for Modine HSB18 Hydronic Unit Heater ~ Product Videos Custom Field Product Reviews