TOYOTA 90105-10040 Body Mount Cushion Bolt

The Toyota 90105-10040 is a genuine OEM body mount bolt (BOLT FOR BODY MOUNT NO.2 CUSHION), playing a critical role in maintaining the structural connection between the vehicle's chassis and body. This specialized fastener is specifically designed to secure the No. 2 body mount cushion, ensuring effective vibration dampening and a secure fit.

Function and Importance

Body mount bolts are subjected to extreme mechanical stresses. Their role is not only to secure the body to the frame, but also to assist in absorbing dynamic loads, torsional stresses, and vibrations generated during driving in conjunction with the rubber or polyurethane mounting cushions. This genuine Toyota fastener ensures a precise fit, correct tensile strength, and reliable torque retention according to factory specifications, which is essential for preserving the vehicle's structural integrity and safety.

Technical Specifications

• Manufacturer: Toyota (Genuine OEM part)
• Part Number: 90105-10040
• Part Type: Body mount bolt (Bolt, Body Mount No.2 Cushion)
• Material: High-tensile hardened alloy steel for maximum shear and tensile resistance.
• Surface Finish: Specialized anti-corrosion coating resistant to moisture, mud, and road salt.

Signs of Wear or Failure

Located in direct proximity to the undercarriage, body mount bolts are heavily exposed to harsh environmental conditions. The most common signs of deterioration or failure include:

• Corrosion and Rusting: Surface or deep pitting rust weakens the bolt structure, which in extreme cases may result in breakage.
• Deformation or Elongation: High mechanical impact or stress can stretch or bend the bolt.
• Undercarriage Noises: If the bolt loosens or shears, metallic knocking, rattling, or squeaking noises may be heard from the body when cornering or driving over rough surfaces.

When replacing body mount cushions, replacing the mounting bolts is strongly recommended to ensure safe and durable fastening.