Tachometer Tach Case International Tractor 454 464 Others-3125106R92 100% new tachometer 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: Case/International Harvester: 3121926R91, 3125106R92, 66455C1 Specs: Description : Tachometer, Rotation : Counter clockwise, Notes : Notes : for diesel and gas applications.