Dorman 42870 Windshield Wiper Arm - Rear

Rear Wiper Arm for Mercedes-Benz Applications

Dorman 42870 is a specific-fit rear windshield wiper arm built to match the original arm’s fit and function on selected Mercedes-Benz vehicles. It uses a bolt-on attachment and a snap-in wiper end for direct replacement service on the rear wiper system.

Compatible with rear wiper service on 2010-2016 Mercedes-Benz GLK350, 2013-2015 Mercedes-Benz GLK250, 2011-2015 Mercedes-Benz E350, and 2012-2016 Mercedes-Benz E63 AMG applications, this black plastic wiper arm is sized at 11.5 inches for the listed vehicles.

• Brand: Dorman
• Part number: 42870
• Specific-fit rear wiper arm
• Black plastic construction
• 11.5-inch length
• Bolt-on attachment method
• Snap-in wiper end type
• Designed to match original fit and function on listed vehicles

Detailed Product Overview

This rear wiper arm is engineered for direct replacement on the specified Mercedes-Benz rear wiper applications. Dorman 42870 is built to restore the correct mounting, reach, and blade connection style for vehicles that use a bolt-on arm with a snap-in wiper end. The part number 42870 is also useful when cross-checking replacement listings for the same application.

This part cross-references Mercedes-Benz OE number 2128201244 for the same application. For buyers searching by vehicle, this rear wiper arm for Mercedes-Benz E350, GLK350, GLK250, and E63 AMG provides a focused OE-style replacement path without universal-fit compromises.

What This Part Helps Solve

• Broken or cracked rear wiper arm
• Loose rear wiper blade attachment at the arm end
• Improper rear wiper sweep caused by a worn arm
• Corrosion or damage affecting rear visibility performance
• Replacement needs after rear wiper arm failure on Mercedes-Benz rear hatch applications

Installation Notes and Tips

Verify rear position fitment before ordering and confirm the vehicle uses the listed bolt-on arm style with a snap-in wiper end. Compare the original arm length and mounting style to Dorman 42870, especially on 2010-2016 Mercedes-Benz GLK350 and 2011-2015 Mercedes-Benz E350 rear applications. No instruction manual is included.

Quality Assurance

Dorman designs this windshield wiper arm to match original fit and function on the specified vehicles and to provide durable, reliable service in rear wiper applications. Use the confirmed vehicle fitment and OE cross-reference 2128201244 to verify application before installation.