Goodmark GMK3020419647L Left Door Glass Run Channel 1964-1966 Ford Mustang

The Goodmark GMK3020419647L is a direct-fit replacement door glass run channel designed specifically for the driver side of 1964-1966 Ford Mustang models. This essential weatherstrip component guides the door glass as it moves up and down while providing a critical seal against wind, water, and road noise.

Key Features:

• Designed for left (driver) side door installation
• Precision-manufactured to match original factory specifications
• Helps eliminate wind noise and water leaks around door glass
• Prevents glass rattling and ensures smooth window operation
• Essential for restoration projects and worn weatherstrip replacement

Goodmark specializes in high-quality replacement body parts and weatherstripping for classic vehicles. This glass run channel restores proper door glass fitment and operation, making it an important component for maintaining your vintage Mustang's comfort and weather protection. Over time, original glass run channels deteriorate, crack, and lose their sealing properties, making replacement necessary for optimal performance.