The Dana Spicer Lock Up Disc, part number 4223322, is a driveline component used in off highway axle applications. This part is also referenced under the Allison Off Highway line as LY4223322, making it traceable across both Dana Spicer and Allison Off Highway parts systems. The lock up disc is classified under driveline and axles and is sold as an individual unit. Pro Gear and Transmission carries genuine Dana Spicer parts – call us to confirm this disc is the correct fit for your specific axle build before ordering.FeaturesDana Spicer part number 4223322Cross-referenced as Allison Off Highway LY4223322Designed for off highway axle driveline applicationsSold individually, one disc per unitClassified under driveline and axles – transmission and clutch parts category