Front Wheel Spindle (YP SP700004) by Yukon Gear & Axle®. Yukon spindles are manufactured to tight tolerances and feature a deeper heat treat at the bearing journals than OEM for greater strength. Yukon Gear and Axle offers an extensive line of general replacement and high performance products for passenger car, truck and SUV applications. High quality alloys and the latest in heat-treating technologies provide a strength for off-road, on the street or at the track.