The Oshkosh 55040AX is a genuine OE lock-washer sourced directly for Oshkosh vehicle applications. Lock-washers are a critical fastener component, preventing loosening under vibration and load cycles common in heavy-duty truck service. Part number 55040AX is the manufacturer-assigned identifier for this specific washer configuration. Because no dimensional or application data has been published for this part number, buyers should verify fitment against their vehicle service documentation before ordering. Pro Gear and Transmission carries genuine Oshkosh hardware -- call us to confirm this is the correct part for your truck.
Features
Genuine Oshkosh OE part number 55040AX
Lock-washer design resists fastener loosening under vibration and load
Manufacturer-specific part number ensures correct OE replacement
Sold by Pro Gear and Transmission
