Dorman 42789 Wiper Arm - Front Right

Durable Wiper Arm for Chevrolet and GMC Trucks

The Dorman 42789 wiper arm is designed specifically for select Chevrolet and GMC truck models, providing reliable windshield wiping performance. Constructed from steel with a matte black finish, this arc-type wiper arm offers a precise fit and long-lasting durability.

• Material: High-quality steel construction for strength and corrosion resistance
• Length: 23 inches for optimal windshield coverage
• Finish: Matte black for a low-glare, professional appearance
• Attachment: Bolt-on design ensures secure installation
• Type: Arc-shaped wiper arm with a 179-degree head angle for effective blade contact
• Articulated design enhances blade movement and wiping efficiency
• Specific fitment for Chevrolet and GMC trucks including Silverado and Sierra series

Product Details and Specifications

The Dorman 42789 wiper arm is engineered to meet the exact specifications of Chevrolet and GMC full-size trucks such as the Silverado 1500, Silverado 2500 HD, Sierra 1500 Limited, and Sierra 3500 HD. Its steel construction provides the necessary rigidity and resistance to weather elements, while the matte black finish helps prevent rust and maintains a clean look. The arc design with a 179-degree head angle ensures consistent pressure across the windshield, improving visibility during adverse weather conditions. This wiper arm is articulated, allowing smooth blade movement and better contact with the glass surface. It is a bolt-on type, designed for a secure and straightforward attachment without the need for adapters.

Compatible Vehicles and Applications

• Chevrolet Silverado 1500, 1500 LD, 2500, 2500 HD, 3500, 3500 HD
• GMC Sierra 1500, 1500 Limited, 2500 HD, 3500 HD
• Chevrolet Cheyenne models requiring a 23-inch arc wiper arm
• Replacement for worn or damaged wiper arms to restore proper windshield wiping
• Ideal for addressing issues such as poor blade contact, streaking, or arm corrosion

Installation Notes and Tips

Installation of the Dorman 42789 wiper arm requires a bolt-on attachment method, compatible with the original mounting points on specified Chevrolet and GMC trucks. No adapters are included or necessary. Ensure the wiper blade is compatible and properly seated on the arm for optimal performance. It is recommended to inspect the wiper blade condition during installation and replace if needed to maintain clear visibility.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 42789 wiper arm undergoes quality checks to ensure durability and reliable performance under various weather conditions. While specific warranty details are not provided, Dorman typically offers limited warranties on their replacement parts to support customer confidence.