Dorman 42511 Wiper Arm - Rear

Dorman 42511 Rear Wiper Arm

Dorman 42511 is a rear windshield wiper arm built for specific vehicle applications and engineered to match the original fit and function. It is a steel, black, semi-gloss replacement designed for reliable rear glass wiping performance on select Buick, Chevrolet, GMC, Isuzu, Saab, and Oldsmobile models.

Key Features

• Direct-fit rear wiper arm for specific applications
• Steel construction for durability
• Black semi-gloss finish
• Arc-style design with bolt-on attachment
• Hook-style wiper blade end
• Wet arm and articulated design
• 15.5-inch length
• No adapter included
• No wiper blade included

Detailed Description

This Dorman rear wiper arm, part number 42511, is made to replace the original arm on select rear wiper systems without changing the factory mounting style. It uses a bolt-on attachment method and a hook-style blade connection, with a 170-degree head angle and arc profile to support consistent rear window coverage. Vehicle coverage includes 2004-2006 Buick Rainier, 2002-2006 Chevrolet Trailblazer and Trailblazer EXT, 2002-2006 GMC Envoy and Envoy XL, 2003-2006 Isuzu Ascender, 2005-2006 Saab 9-7x, and 2002-2004 Oldsmobile Bravada. This part cross-references OE numbers 12494837 and 15230587 for the same application.

What It Helps Fix

• Broken or bent rear wiper arm on the liftgate or rear glass
• Poor rear windshield contact caused by worn arm tension
• Uneven wiping from a damaged hook-end connection
• Corrosion or finish wear on the original rear arm
• Loss of rear visibility during rain, snow, or road spray

Installation Notes and Tips

Verify rear fitment by year, make, model, and position before ordering. This is a specific-fit replacement for the rear location and uses a bolt-on mounting style. Transfer the existing rear wiper blade if it remains serviceable, since the blade is not included. Confirm the hook-style end and arm length match the original equipment setup on your vehicle.

Quality Assurance

Dorman designs this rear wiper arm to match original fit and function on the listed vehicles, with a focus on durability and dependable operation. Part number 42511 is built as an OE-style replacement for rear wiper service on the specified applications.