Buy OEM 1990 Mazda Part # UC8634210 (UC86-34-210). Suspension Control Arm (Right, Upper). 4WD. All Models; Right. Suspension Control Arm - Repair or Replace Control arms often don’t fail

Arm. Control. RigHT.
Suspension component that connects and provides pivotal movement of the Steering Knuckle to the vehicle. UP. Suspension.

Suspension Control Arm

Fits B2000, B2200, B2600

4WD. All Models; Right.
Suspension Control Arm - Repair or Replace
Control arms often don’t fail on their own, although their associated bushings can break or wear causing a clunk noise when your 1990 Mazda goes over bumps or changes speed rapidly—whether braking or under hard acceleration. Control arms can also sometimes become bent, causing your vehicle to pull to the left or right.