Mopar 55372839AD Fender Rail Reinforcement - Left

Mopar Fender Rail Reinforcement for Ram Trucks

The Mopar 55372839AD fender rail reinforcement is a left-side body repair component for select Ram trucks. It is used on Ram 1500, Ram 1500 Classic, Ram 2500, and Ram 3500 applications where the fender rail structure needs OE-style replacement.

• Genuine Mopar body reinforcement for the left fender rail area
• Fits 2012-2021 Ram 1500, left
• Fits 2019 Ram 1500 Classic, left
• Fits 2013-2018 Ram 2500, left
• Fits 2013-2018 Ram 3500, left
• Supersedes part number 55372839AC

Detailed Fitment and Function

This fender rail reinforcement helps restore the structural mounting area at the left front fender rail on compatible Ram body applications. Mopar 55372839AD is the correct OE replacement choice when repairing collision damage, corrosion-related deterioration, or a compromised fender rail on Ram 1500 and Ram 2500/3500 trucks.

This part cross-references no listed aftermarket part numbers for the same application.

Common Repair Uses

• Repairing a bent or damaged left fender rail after front-end impact
• Replacing rusted or weakened body structure at the fender mounting area
• Restoring alignment at the left front body panel attachment point
• Addressing poor panel fit after prior bodywork

Installation Notes

Verify vehicle year, model, and left-side application before installation. Body repair and welding procedures should follow factory repair practices for the specific Ram platform. Test-fit surrounding panels and mounting points before final assembly.

Quality Assurance

As a Mopar OE part, 55372839AD is built for direct fitment on the listed Ram applications and supersedes 55372839AC.