The Yukon Mighty axle seal provides a precision fit for 1559 or 6408 bearings and is not for coarse 12T splines. It uses modern design and manufacturing to deliver a tight, long-lasting seal for rear axle service. Dimensions are specified to aid selection: approximately 1.618 in. shaft inside diameter and about 2.579 in. outside diameter, ensuring correct fit where those bearing sizes are used.
Yukon Gear Axle Seal / For 1559 or 6408 Bearing