Heavy Duty Spindle Bush Set of 4, purpose-built for Powertrac 439 tractors, delivers superior durability and wear-resistance for tough farming jobs. Designed to handle high loads and constant movement, these bushes ensure smooth spindle action and maintain precise wheel alignment. Ideal for front axle and suspension maintenance, their robust construction helps extend tractor service life, reduce vibration, and enhance performance during heavy-duty operations in commercial agriculture.