Alternator Pulley For Tractor 5/8" Wide X 2-1/4" Diameter 100% new alternator pulley 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: Universal Products: 98NAA5825 Specs: Description : Alternator Pulley, Notes : 5/8" wide x 2-1/4" diameter, wide pulley used on Atlantic 10SI.