301SQ53 OEM Replacement King Pin Kit with Heat-Treated Steel for Mack Heavy Duty Front Axle Trucks

This 301SQ53 complete king pin kit serves as an accurate OEM replacement tailored for Mack heavy-duty trucks with front axle steering systems. The kit comes fully equipped with all necessary installation parts including heat-treated steel king pins, wear-proof bushings, thrust washers, durable oil seals, lock nuts and matching gaskets for complete steering knuckle maintenance.

All metal components undergo professional quenching and tempering processes to enhance hardness and load resistance, while high-performance rubber seals prevent mud, water and grease infiltration. This kit efficiently fixes common problems including loose steering, vehicle wandering and abnormal tire abrasion, tolerating heavy loads, intense vibration and rough long-distance driving environments. Strictly matching original dimensional standards, it provides stable, long-term reliable steering performance and reduces frequent repair costs for fleets.

High quality products come from character, and we always believe that: excellent products + professional services = a pleasant purchasing experience for you. Welcome to your choice.