HD-OEM: 35775-89Part Number: 17-9144 Manufacturer: Andrews UOM: 1 - EA Summary:Andrews 4th gear for countershaft, stock gear for XL 5-speed models. Gear is splined and does not have dawgs.Type: 5-Speed Fitment: XL 1991-UP 5-speed models Measurements: Teeth: 21Outer Diameter: 2.38" Inner Diameter: 1.21" Thickness: .80" Country of Origin: USA