42485312 GM Bumper reinforcement bar

What is this part?

The GM bumper reinforcement 42485312 is a genuine OEM structural body component designed to absorb and distribute impact forces.

What does it do?

This OEM bumper reinforcement, also known as an impact bar, is mounted behind the bumper cover and helps absorb collision energy during low- to moderate-speed impacts. It protects critical vehicle structures such as the frame, radiator, and occupants by distributing impact forces across the front or rear of the vehicle. A genuine GM bumper reinforcement is manufactured to factory specifications, ensuring correct strength, geometry, and crash performance. Proper reinforcement function is essential for vehicle safety and structural integrity.

When to replace

The GM bumper reinforcement 42485312 should be replaced if it is bent, cracked, corroded, or has been damaged in a collision. Even minor impacts can compromise the reinforcement's energy-absorbing capability. Installing a genuine OEM bumper reinforcement helps restore original crash protection and vehicle safety.

Compatibility

The genuine GM bumper reinforcement 42485312 is compatible with selected GM vehicles. This OEM component is engineered for precise fitment with the original bumper structure and mounting points. Compatibility may vary depending on bumper position (front or rear), body style, and model year. Please verify the part number 42485312 before purchase.

Installation: DIY or service?

Installation of this genuine OEM GM bumper reinforcement 42485312 typically requires bumper cover removal and precise alignment. Professional installation is recommended to ensure correct fitment and proper impact protection.