Ford 8N 9N Naa 600 601 800 801 2000 4000 Tractor Thru 1964 Key Switch For 8N3679C 100% new key switch 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: Ford/New Holland: 8N3679C Specs: Note : Fits 1939~64 tractors.