Genuine Spicer axle kits include all the latest production upgrades, so the parts you're installing are as good-or better-than the parts that originally came with your vehicle. Each kit comes with the exact combination of parts you need to get your axle back in shape and on the road. Premium oil seals to keep lube in-and dust and grime out. Handy RTV compound to seal the repair. Kit includes: pinion head & tail bearings, differential bearings, pinion seal, pinion nut, collapsible spacer (where applicable) and RTV sealant.