Kingpin Dana 60 front axles rely on proper preload and bearing condition to maintain steering stability and reduce unwanted movement in the knuckle assembly. Over time, worn bearings and seals can introduce steering play, wandering, and contamination that accelerates wear throughout the axle assembly.
Replacing lower kingpin components restores proper support at the base of the knuckle where the majority of steering load is concentrated. Regular maintenance of kingpin bearings and seals is especially important in lifted trucks and off-road vehicles running oversized tires, where steering forces and side loading are significantly increased.