Solenoid For Massey Ferguson Tractor 1744S 1844 Others- 3473937M91 100% new solenoid meets OEM quality for tractors and farm equipment 1-year warranty covers you throughout planting and harvesting seasons Factory direct pricing delivers an honest value for hard-earned money Replaces OEM Numbers: Massey Ferguson: 3473937M91 Specs: Voltage : 12V, Notes : four terminal, switch terminal is male spade. For Lucas M50 units.