Alternator For John Deere Tractor 5310N 5400 5410 5500 1992 on Denso Unit. Unit of Measure EACH. Description ALT 12V 40A DENSO. Adjusting Hole Diameter 8. Mount Leg Thickness 21mm. Pivot Hole Diameter 10. Pulley Outside Diameter 62mm. Suits Unit Make Denso. Alternator Mount Single Leg. Mount Cnt to Cnt 138mm. Premium cores and precise OE assembly benchmarks. Designed to meet the grueling heat and electrical requirements. Compact and lightweight design.