Front Right Lower Control Arm - 1990 300ZX Z32

The Nissan 300ZX Z32 platform utilizes forged aluminum front lower control arms that interchange across the 1990-1996 USDM production run. When sourcing in junkyards, prioritize locating part number 54500-30P00 or its service replacement 54500-40P01 etched on the inboard mounting ear. These arms fit both VG30DE naturally aspirated and VG30DETT twin-turbo variants, as well as both 2-seater and 2+2 configurations at the front axle position. Common failures include stress fractures radiating from the ball joint boss caused by curb strikes or track abuse, and deteriorated rear bushings that induce vagueness under braking. Inspect the casting carefully for hairline cracks and verify the ball joint boot integrity. Installation requires a separator tool to detach the ball joint taper from the steering knuckle without damaging the aluminum threads; always torque subframe bolts to Nissan specifications using a calibrated wrench to prevent galling. Mandatory four-wheel alignment follows any replacement due to suspension geometry sensitivity.