TOYOTA 90170-18007 Control Arm Nut

This genuine Toyota (OEM: 90170-18007) control arm mounting nut is a premium-quality factory original part designed specifically to ensure the safe and stable fastening of the vehicle's suspension system. The control arm nut plays a vital role in maintaining the structural integrity of the chassis by securing the control arm to other suspension components.

Technical Specifications and Features

• Manufacturer: TOYOTA (Original Equipment Manufacturer)
• OEM Part Number: 90170-18007
• Part Type: Control arm retaining nut (Nut, control arm)
• Material Quality: High-tensile, hardened steel alloy engineered to withstand extreme dynamic suspension loads.
• Surface Treatment: Specialized anti-corrosion coating to protect against moisture, mud, and road salt.

Function and Importance in the Suspension System

The control arm mounting nut ensures that moving suspension components remain tightly fastened without play. Substandard or compromised fasteners present a serious safety risk, as they can cause suspension loosening, misaligned wheel geometry, and in extreme cases, catastrophic suspension failure.

Signs of Wear and When to Replace

Replacement of this mounting nut is recommended in the following cases:

• Suspension overhaul or control arm replacement: In accordance with OEM service guidelines, control arm retaining nuts are single-use fasteners (due to their self-locking characteristics) and must be replaced whenever disassembled.
• Corrosion and thread damage: If the nut threads are damaged or corroded, preventing the safe retention of specified tightening torque.
• Mechanical deformation: In the event of elongation or structural deformation caused by over-torquing or improper installation.