Keystone CH1590103 Rear Door Opening Weatherstrip Seal - Crew Cab & Mega Cab

The Keystone CH1590103 is an OEM-replacement rear door opening weatherstrip seal designed for Ram full-size pickup trucks equipped with Crew Cab or Mega Cab configurations. This body-side seal mounts on the door opening pinch weld lip and serves as both the right-hand and left-hand (driver and passenger) rear door seal — one part number covers both sides.

Engineered to match original equipment specifications, this seal restores a tight, weatherproof barrier between the rear door and the body, helping to eliminate wind noise, water intrusion, and road dust infiltration. It is a direct OEM-style replacement for Mopar part number 55112355AC.

Key Features:

• OEM-style fitment — mounts on body-side pinch weld lip at the rear door opening
• Applicable to both right-hand (RH) and left-hand (LH) rear door positions — sold individually
• Designed for Crew Cab and Mega Cab body styles
• Replaces Mopar OEM part number: 55112355AC
• Restores factory-level protection against wind noise, water leaks, and drafts
• OEM cross-references: 55112355AA, 55112355AB

This weatherstrip is a reliable collision repair and maintenance replacement for worn, cracked, or damaged factory seals. Order two if replacing both driver and passenger side rear door seals.