Ford Authority

Tremec TKX-600 Lineup Now Being Sold By Ford Performance

Ford has used Tremec transmissions in some of its vehicles for years now, including the 2021 Ford Mustang Mach 1, which comes equipped with that company’s TR-3160 six-speed manual transmission instead of Getrag’s much-maligned MT-82 six-speed manual. Now, the Ford Performance catalog has expanded to include the new Tremec TKX-600 transmission in two different forms for those that are interested in employing a fortified gearbox in their next custom build, too.

The first – sold under part number M-7003-TKX68 – consists of the Tremec TKX-600 gearbox with a 0.68 fifth gear or overdrive, while the second – part number M-7003-TKX81 – features a 0.81 overdrive. Otherwise, these two version of the TKX are essentially identical, with a first gear ratio of 2.87, a 1.89 second gear, a 1.28 third gear, and a 1.0 fourth gear.

The TKX-600 offers a host of benefits – including a reduced overall size when compared to its predecessors, which is designed to help it fit in a wider range of applications, and it weighs a mere 99 pounds dry. The new transmission is compatible with Ford’s 302 and 351 cubic-inch V8s using Ford Performance’s M-6392-R58 bellhousing, or with Ford’s modular 4.6L Triton V8, 5.0L Coyote V8, the 5.2L V8 family, and 5.4L Triton V8 using the bellhousing sold under part number M-6392-M46.

Capable of handling up to 600 pound-feet of torque, the Tremec TKX-600 features wider and more durable gears than the TKO gearbox, caged needle bearings for improved durability, a 26 spline input shaft and 31 spline output shaft, hybrid carbon/bronze synchronizers, a 7,500 rpm shift capability, and takes 2.7 quarts of fluid, with either Tremec’s HIgh Performance Manual transmission fluid or Mobil 1 Synthetic ATF recommended. Regardless of gear choice, the brand new transmission retails for $3,395.

We’ll have more Blue Oval parts and accessories to share soon, so be sure and subscribe to Ford Authority for 24/7 Ford news coverage.

Brett's lost track of all the Fords he's owned over the years and how much he's spent modifying them, but his current money pits include an S550 Mustang and 13th gen F-150.

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  1. Jeff

    TREMEC trannys are a super addition for the Ford owner, and can now buy directly from the Parts counter…..Fantastic!!! Curious if the “M46” could fit a Lincoln 4.6???

  2. Ken

    Not sure why people complain about the MT-82, my 2013 5.0 gets plenty of action and my trans shifts great almost as good as new still after almost 10 years. A Calimer MT-82 stage 3 has a G-Force gearset and can handle much more power (rated 1000 hp, 900 lb-ft I believe). That’s a far better choice for similar money when it’s all said and done.

  3. Wayne Moyer

    Do they make a 5 or 6 speed manual transmission that will fit in a 1972 MERCURY COUGAR with a 351 Cleveland Cobra Jet with a 4-Speed top loader trans


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