4R75W

In 2003 Ford upgraded the 4R70W with a stronger ring gear that had 24 lugs, as opposed to 6, for the output shaft sensor (OSS) to read off of, a new torque converter, a revised front pump assembly, and a VSS that matches the OSS to improve gear shifting charactersitics. These enhancements helped the 4R75W to handle more power while being more effective and cost-efficient. While not applied on all 2003 model year cars, the 4R75W/E eventually took place of the 4R70W/E.