Northland Transmission is the proud home of the SF-99 Servo Pin Bore
Repair system. The SF-99 is a patented series of tools to repair
worn automatic transmission cases. Here you see an overdrive servo
Ford 5R55W. This unit was only two years old with about 80,000
miles on it. The tool for this bore (5RW), as well as the tool for
4F27E's (4F27) are Ford approved tools, and are available through
We also offer tooling to repair worn Torque Flight (through 48RE) valve bodies as
well as several specialty parts for several different lines of
We are a full service transmission shop specializing in
transmissions and four wheel drive systems.
Vehicles acting up? Stop in anytime eight to noon, one to
five for a free road test. No appointment necessary.