Keystone FO1390113 Front Door Opening Weatherstrip Seal Left Side Extended Cab

The Keystone FO1390113 is an OEM-replacement front door opening weatherstrip seal for the left (driver) side of F-Series Super Duty Extended Cab pickups from 1999 through 2011. Mounted on the body at the door opening, this seal forms a tight barrier between the door and the cab to block water, wind, dust, and road noise from entering the cabin.

Key Features:

• Body-mounted (on-body) door opening weatherstrip for the left front door
• Designed for Extended Cab / Super Cab configurations
• Includes plugs for secure, rattle-free installation
• Direct OEM-style replacement — no cutting or trimming required
• Restores factory weatherproofing and cabin sound insulation

OEM / Cross-Reference Part Numbers:

• Ford OEM: 3C3Z-2820709-BA
• Keystone: FO1390113

This weatherstrip seal is also referred to as a door seal or door opening seal. It is designed to fit securely into the factory channel or attach via the original clip/plug mounting points for a straightforward installation that returns the door opening to factory sealing performance.