Dorman 42878 Windshield Wiper Arm - Front Left, Front Right or Rear

Dorman 42878 Wiper Arm for Jeep Wrangler

This Dorman windshield wiper arm is a specific-fit replacement for select Jeep Wrangler applications. Built from steel with a black matte finish, it is designed to match the original arm’s fit and function for dependable windshield wiping performance.

• Specific-fit windshield wiper arm for select Jeep Wrangler models
• Steel construction for durability
• Black matte finish for an OE-style appearance
• 18.75-inch length
• Attachment method: spine / flange nut
• Wiper end type: pin
• Wiper blade not included
• Part number 42878

OE-Style Replacement Design

Designed for the front left, front right, and rear positions on 1987-1995 Jeep Wrangler models, this wiper arm restores the connection between the wiper linkage and blade mount. It is a direct replacement for worn, bent, or corroded arms and is built to match the original arm’s shape and mounting style. This part cross-references 428782 and 56030012 for the same application.

What This Wiper Arm Helps Fix

• Weak or uneven windshield wiping on a Jeep Wrangler
• Wiper arm corrosion or finish wear
• Loose or damaged arm-to-linkage attachment
• Poor blade contact caused by a bent arm
• Restoration needs for 1987-1995 Jeep Wrangler front or rear wiper positions

Installation Notes

Verify the vehicle position before installation: Fits 1987-1995 Jeep Wrangler, front left; Fits 1987-1995 Jeep Wrangler, front right; Fits 1991-1995 Jeep Wrangler, rear. Confirm the spine / flange nut attachment and pin-style wiper end match the original hardware and blade connection. Because no instruction manual is included, compare the old arm’s length and mounting style before removal and installation. Part number 42878 should be matched to the vehicle’s original application before ordering.

Quality Assurance

Dorman designs this wiper arm to match original fit and function on specified vehicles, with steel construction selected for durability and reliable operation. The part number 42878 is engineered as a direct replacement for the listed Jeep Wrangler applications.