In 2003, Ford revised the 4R70W transmission to include: A stronger ring gear that has 24 lugs (as opposed to 6) for the output shaft sensor (OSS) to read from, a revised torque converter, a revised front pump assembly, and a vehicle speed sensor (VSS) that complements the OSS to improve shift quality and efficiency.
In 2003, Ford upgraded the 4R70W transmission by adding a stronger ring gear with 24 lugs (instead of 6) to read from the output shaft sensor (OSS), a revised torque converter, a modified front pump assembly, and a vehicle speed sensor (VSS) that complements the OSS for improved shift quality and efficiency.