Dorman 42721 Windshield Wiper Arm - Front Left

Reliable Wiper Arm Replacement for Select GM Models

The Dorman 42721 wiper arm is designed specifically for select Buick, Cadillac, Oldsmobile, and Pontiac vehicles. Crafted from durable steel and finished in black, this wiper arm ensures a secure fit and consistent performance for your vehicle's windshield wiper system.

• Constructed from sturdy steel material for long-lasting durability
• 24.5-inch length tailored for specific vehicle fitment
• Black finish to match original equipment appearance
• Pin-type wiper end for secure blade attachment
• Attachment via spine and flange nut for reliable installation
• Compatible with Buick, Cadillac, Oldsmobile, and Pontiac models including Bonneville, Delta 88, DeVille, Fleetwood, and LeSabre
• Part number 42721 ensures precise replacement

Product Details and Specifications

The Dorman 42721 wiper arm is engineered to replace worn or damaged wiper arms on specific GM vehicles. Its steel construction provides strength and resistance to corrosion, while the black finish maintains the factory look. Measuring 24.5 inches in length, this wiper arm is designed to match the original equipment specifications for a proper fit and function. The pin-type wiper end allows for easy blade attachment, and the spine with flange nut attachment method ensures a secure connection to the vehicle's wiper motor assembly.

Compatible Vehicles and Applications

This wiper arm is compatible with the following makes and models:

• Buick LeSabre
• Cadillac DeVille and Fleetwood
• Oldsmobile Delta 88
• Pontiac Bonneville

Using the Dorman 42721 wiper arm helps maintain clear visibility during adverse weather conditions by ensuring your wiper blades operate smoothly and effectively.

Common Issues Addressed by This Wiper Arm

• Wiper arm bending or damage from wear and tear
• Loose or unstable wiper blade attachment
• Corrosion or rust compromising wiper arm integrity
• Inconsistent wiping performance due to faulty arm
• Replacement for broken or missing wiper arms on specified GM models

Installation Notes and Tips

Installation of the Dorman 42721 wiper arm requires removal of the old arm by loosening the flange nut on the spine attachment. Align the new arm’s pin-type end with the wiper blade and secure it firmly. No instruction manual is included, so referring to the vehicle’s service manual is recommended for proper installation procedures. Ensure the arm is tightened securely to prevent movement during operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 42721 wiper arm undergoes quality checks to ensure durability and reliable performance. While no specific warranty details are provided, Dorman typically offers limited warranties on their replacement parts. Verify warranty terms with the product documentation or supplier.