Dorman 42421 Headlight Retainer

Headlight Retainer for Select GM Vehicles

This Dorman headlight retainer is a specific-fit replacement for select Buick, Chevrolet, GMC, and Oldsmobile applications. Built from plastic in a black and white finish, it matches the original part’s fit and function for dependable headlamp retention.

• Brand: Dorman
• Part number: 42421
• Specific-fit headlight retainer for direct replacement use
• Plastic construction with black and white finish
• Press-on fastener type for OE-style attachment
• Fastener hole size: 1.879 in
• Length: 4.452 in
• Package contents: headlamp retainer kit

Detailed Product Overview

Dorman 42421 is engineered to match the fit and function of the original headlight retainer on specified vehicles. It is designed for applications such as the 1997-2005 Buick Century, 1998-2005 Chevrolet Blazer, 2000-2005 Chevrolet Impala, 2000-2005 Chevrolet Monte Carlo, 1998-2004 Buick Regal, 1998-2004 Chevrolet S10, 1998-2004 GMC Sonoma, 1998-2002 Oldsmobile Intrigue, 1998-2001 GMC Jimmy, and 1998-2001 Oldsmobile Bravada. This part cross-references GM 10298115 for the same application. The Dorman 42421 headlight retainer supports secure headlamp mounting where the original retainer has worn, cracked, or no longer holds properly.

Common Repair Uses

• Loose or shifting headlamp assembly
• Broken or missing original headlight retainer
• Poor headlight alignment caused by worn mounting hardware
• Retainer damage from age, vibration, or prior service
• Restoration of OE-style headlamp support on GM vehicles

Installation Notes

Verify the vehicle’s original retainer shape, fastener hole size, and mounting style before installation. This part uses a press-on fastener design, so alignment with the existing headlamp mounting points is important for proper seating. Confirm fitment for your exact Buick, Chevrolet, GMC, or Oldsmobile model before service.

Quality Assurance

Dorman manufactures this headlight retainer as a direct replacement part built to match original fit and function on listed applications. The design focuses on reliable performance using quality materials for everyday repair use.