Mopar 55399123AG Door Window Belt Weatherstrip - Front Left

Mopar Door Window Belt Weatherstrip for Challenger

Replace a worn outer belt weatherstrip with this Mopar door window belt weatherstrip, part number 55399123AG. It is a direct-fit body component for the front left door on select Dodge Challenger models and helps restore a proper seal at the window opening.

Key Features

• Genuine Mopar body replacement part
• Front left, outer belt weatherstrip application
• Fits 2018-2021 Dodge Challenger, front left
• Supersedes part number 55399123AF
• Part number 55399123AG for ordering and verification

Detailed Description

This Mopar door window belt weatherstrip is made for the front left door on 2018-2021 Dodge Challenger models. It installs at the outer belt line along the window opening, where it helps maintain the door-to-glass seal and supports proper exterior trim alignment. If you are searching for a 2018-2021 Dodge Challenger front left door outer belt weatherstrip or Mopar 55399123AG, this is the correct OE-style replacement for the listed application.

Use part number 55399123AG to confirm the correct component before ordering. This part cross-references no additional part numbers beyond the listed supersession for the same application.

What It Is Used For

• Replacing a cracked, hardened, or separated outer belt weatherstrip
• Restoring a tighter seal at the front left door window opening
• Addressing wind noise from worn door glass sealing surfaces
• Correcting water intrusion at the upper door edge
• Replacing a damaged trim seal on a Dodge Challenger door

Installation Notes and Tips

Verify the vehicle as a 2018-2021 Dodge Challenger with front left door fitment before installation. Compare the existing seal profile and mounting points to the new Mopar 55399123AG part to confirm match-up with the outer belt weatherstrip location. Clean the mounting area thoroughly before installing the replacement seal.

Quality Assurance

Mopar OE replacement parts are built for factory-style fitment and application-specific use on Chrysler, Dodge, Jeep, and Ram vehicles. Part number 55399123AG supersedes 55399123AF for this listed Challenger application.