Alternator for International Harvester 3944 Tractor 01/82 to 12/86. Description ALT 24V 55A BOSCH STYLE. Adjusting Hole Diameter M8 x 1.25. Mount Leg Thickness 51mm. Pivot Hole Diameter 10. Pulley Outside Diameter 92mm. Suits Unit Make Bosch. Note Pulley Diameter 92mm. Alternator Mount Single Leg. Mount Cnt to Cnt 187mm. Alternator 24v To Suit Case IH 821C 8.3L Wheel Loader 01/00 to 12/06. The OEX brand is sourced from market leading Original Equipment Manufacturers and Aftermarket Suppliers. OEX products are sourced from factories that are ISO9001 certified to support stringent engineering, testing and quality control procedures. When you fit an OEX product you have the peace of mind in knowing that it is backed by a comprehensive nationwide warr.