Axle Shaft Axle Shaft; 37 Spline; 35.5 in. - 39.5 in. Length; 8 X 3.96 in. Bolt Pattern; Full Float; FEATURES: Made From 1541H Alloy Axles Offer A Strength Increase Over Stock 1 Year Warranty Against Manufacturer Defects Step up to the quality of Yukon Gear & Axle. Yukon parts are produced with state of the art equipment and manufacturing techniques in partnership by some of the world's foremost leaders in OEM manufacturing. Our history in knowing the right people and doing work in select factories is what makes Yukon Gear & Axle a leading player in the differential business.