Full Differential Spool

The USA Standard Gear ZP FST8-30 is a full differential spool engineered for robust performance in Toyota 8-inch axles equipped with 4-cylinder engines. Constructed entirely from steel, this spool offers enhanced durability and reliability for demanding driving conditions. It features a 30-spline count, ensuring a secure and effective engagement with the axle shafts. This differential spool is designed for direct fitment in 1984-1995 Toyota 4Runner and 1979-1995 Toyota Pickup models. It is applicable to both front and rear differentials in 4WD configurations. The unit is built to work with existing gears, attaching directly to the ring gear and axle shafts to deliver equal and full power to both wheels simultaneously. The product includes a 1-year warranty covering manufacturer defects, providing peace of mind for the end-user. As a full spool, it locks both axle shafts together, offering maximum traction in off-road or performance driving scenarios by ensuring neither wheel spins independently. Installation may require professional expertise due to the nature of differential work.