10/24/2026
FORD “FOUR VERSIONS OF 5R55”
Although the 5R55N is very similar to the W or S models, only a few parts are interchangeable.
We receive numerous calls about these where someone has rebuilt the transmission, yet still experiences the same symptoms. The most common problem we see on these units is the excess wear on the case or valve body.
https://thetransmissionshop.com/fords-four-versions-of-5r55/