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The T18 is yet another bulletproof four-speed manual, and versions of it were used in Jeep, Ford, and Scout applications. There are many varieties of the Jeep T18 and not all of them are equipped with a granny-low First gear. The Ford T18 shares many external similarities with the NP435 (shown), and the two transmissions were used for many years under fullsize trucks. The majority of the 4x4 Ford T18s have a 6.32:1 First gear ratio. T18s are plentiful in salvage yards, but all the variations and its physical similarity to other transmissions can make it difficult to spot.