Remanufactured T45 Transmission Price

Brought in to replace Ford's T5 transmission when the manufacturer retired the 5.0L engine after over 30 years of production, the 4.6L engine and its match, the Ford T45 transmission, also known as the T-45, had some big shoes to fill. It also was the first manual transmission that had to work with an engine using overhead cams, which brought some new challenges. Because the change happened while Ford was in a state of transition, these changes were rather short-lived compared to the other engines and transmissions around it, with the T5 lasting from 1982 to 1996 and the TR3650, which followed the T45 as a completely new transmission from the ground up, lasting from 2001 to 2010 model years. The T56 six-speed transmission also came into play after the retirement of the T45, providing an alternative that shared many of the same parts.

At the same time, the companies manufacturing the T45 Ford Mustang transmission were also being changed out. Borg Warner started on the contract for the first two years, only to be replaced by Tremec in later years. Though you may hear people say that the Tremec T45 transmissions are superior, this is only due to the changes that were made within the transmission as a whole as production rolled forward through newer model years.

However, the T45 transmission was built to deliver some solid power from the engine to the wheels. A strong 31-spline output shaft is paired with a 10-spline input shaft to move up to 375 lb-ft of torque to the wheels. The 1996 to 1998 model years used seven-tooth speedometer gears in the GT and eight-tooth speedometer gears in the Cobra, with both moved to electronic speed sensors in 1999. The 1998 model year also saw an upgrade in the 3/4 shift fork, with those from prior years being slightly weaker. However, an integral clutch housing that features a front-cover end-loading design delivers increased driveline bending strength as advanced synchronizer technology creates a great experience.

The T45 transmission features gear ratios including 3.37 in first, 1.99 in second, 1.33 in third, 1.00 in fourth, and 0.67 in fifth, with a 3.22 reverse gear ratio. The gears were significantly stronger than the T5s, providing better durability and longevity compared to the older transmission. The T45 transmission also features carbon-lined steel synchro rings to make shifting at high RPMs easier. Fifth gear overdrive provides a wider range of radio coverage, while tapered roller bearings on the main and countershafts reduce chatter and improve the transmission's durability. Needle bearings under the first through fourth gears reduce shift effort while enhancing performance, while the double cone synchronizer design further reduces shift effort in the first and second gears.