Shop Ford Flex Transmission Components List. Order Ford Flex Gearbox Parts Catalog & Ford Flex Auto Transmission Components. Browse Ford Flex Transmissions. Maintaining your Ford Flex's transmission components is crucial for seamless gear shifts and longevity. Regular fluid checks and timely filter replacements can prevent costly repairs, while signs such as slipping gears or delayed acceleration often signal the need for part replacement. When selecting transmission parts, opt for quality materials compatible with your Flex model to ensure durability and optimal performance. Consider OEM or aftermarket options, each offering a balance between cost and reliability. Installation is precise work; investing in professional fitting can save time and safeguard against future transmission troubles, ensuring your ride remains smooth and efficient.