Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses high quality bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and racespilot bearing (if applicable)crush sleeve (if applicable)complete pinion shim kitpinion nutthread lockerand marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear. This kit fits applications with a 27 spline pinion.