Powerflex differential mount bushings reduce unwanted and excessive rear axle movement, especially during hard driving and abrupt on/off throttle. Stock rubber bushings become too soft and pliable over time, which leads to excess differential movement, which can impact the rest of the rear suspension. Stiffer urethane differential bushings will help reduce play and “wind-up” in the diff mounts and provide crisper torque transfer.Diagram Reference #11This part fits the following models:Nissan300ZX (1990-1996)Skyline R33 Including GT-R, GTS, GTS-T (1993-1998)Skyline R32 2WD Including GTS, GXI, & GTST (1989 – 1993)Skyline R32 4WD Including GT-R & GTS-4 (1989 – 1993)