Dorman 42144 Headlight Adjusting Screw

Dorman 42144 Headlight Adjusting Screw

Dorman 42144 is a specific-fit headlight adjusting screw for sealed beam headlight systems. It is built from metal and plastic materials and is engineered to match the fit and function of the original part on specified vehicles, helping restore proper headlight aim on Chevrolet, GMC, and Cadillac trucks and SUVs.

Key Features

• Specific-fit replacement for sealed beam headlight systems
• Adjustable design for headlight alignment
• Constructed from metal and plastic materials
• Screw-on attachment method
• Designed to match original part fit and function
• Fits 1990-2000 Chevrolet C1500, C2500, C3500, K1500, K2500, K3500, Tahoe, Blazer, and Suburban applications with 4-headlight systems
• Fits 1990-2000 GMC C1500, C2500, C3500, K1500, K2500, K3500, Yukon, and Suburban applications with 4-headlight systems
• Fits 1999-2000 Cadillac Escalade with 4-headlight system

Detailed Description

This headlight adjusting screw is a direct replacement for the original hardware used on select GM vehicles with sealed beam, 4-headlight systems. Dorman 42144 is designed for accurate adjustment of headlamp aim, which is important after headlight service, bracket repair, or replacement of worn adjustment hardware. This part cross-references OE number 16515827 for the same application. It is a practical choice for Chevrolet C1500, GMC K1500, and related truck and SUV platforms where original adjuster components have worn, cracked, or no longer hold alignment.

What It Helps Fix

• Headlights that will not stay properly aimed
• Broken or worn headlight adjuster hardware
• Misaligned sealed beam headlamp assemblies
• Difficulty restoring factory-style headlight positioning after repair
• Loose adjustment points in 4-headlight systems

Installation Notes and Tips

Verify sealed beam headlight design and 4-headlight system configuration before ordering. Match the original adjuster style and mounting points to the vehicle’s existing headlamp bracket. Because installation hardware is not included, reuse or source any additional mounting components required for the repair. Confirm headlight aim after installation to ensure proper beam placement.

Quality Assurance

Dorman designs this replacement part to match the original fit and function on listed applications. The part number is 42144, and it is intended for specific vehicle fitment rather than universal use.