T19 Transmission for Sale | OEM BorgWarner 4-Speed Manual (Ford F-250 F-350)

Description

Transmission Background

The BorgWarner T19 is a heavy-duty 4-speed manual transmission used in Ford F-250 and F-350 trucks from 1968 through 1988. It is the improved successor to the BorgWarner T18, similar in appearance and dimensions but featuring fully synchronized first gear, which allows downshifting into first while the truck is in motion. This was a significant practical improvement over the T18, which required a complete stop before engaging first gear.

The T19 was offered in three gear ratio sets during its production life. The T19A with 4.02:1 first gear was the most common and was used extensively behind the Ford 6.9L IDI diesel and 460 V8 in F-250 and F-350 trucks. A medium-ratio version with 5.11:1 first gear appeared for only two years (1983 to 1984). The wide-ratio version with 6.32:1 first gear was limited to the Ford 500-800 series heavy-duty commercial trucks and is less commonly encountered in standard pickup applications.

The T19 was replaced by the German-built ZF5 5-speed starting in 1987 for diesel applications. For Bullnose-era Ford truck enthusiasts maintaining original drivetrains, a gear-tested T19 in a confirmed ratio is the correct replacement part. Call (240) 306-7051 to confirm gear ratio availability.

When Replacement Becomes Necessary

• Difficulty or inability to engage first gear, synchronizer wear on the most-used gear
• Grinding when downshifting into first while moving, synchronizer wear (note: the T18 cannot shift into first while moving, only the T19 can)
• Gear popping out under load, worn detent springs or shift fork wear
• Oil leaks at front or rear seals, aged seal deterioration common on Bullnose-era units
• Whining noise at speed, input shaft bearing wear
• Reverse grinding, reverse synchronizer wear or incorrect shift technique

Known Issues We Document Before Shipping

• Gear ratio confusion: three different first-gear ratios exist (4.02, 5.11, 6.32) and they are not immediately identifiable from external inspection without checking the nameplate tag. The wrong ratio in a specific truck application affects launch feel and engine rpm at road speed. We identify and confirm the gear ratio of every unit before shipping.
• T18 versus T19 identification: the T18 and T19 look nearly identical externally with the same case dimensions, same overall length, and similar appearance. The key difference is the synchronized first gear of the T19. They are identified by their tag numbers and shift pattern. We identify the transmission before shipping.
• No overdrive: the T19 has no overdrive gear. 4th gear is direct drive (1.00:1). Buyers expecting an overdrive transmission should be directed to the ZF5 5-speed which replaced the T19 in 1987 Ford diesel applications.
• Aged seals: most T19 units available today are from 1970s and 1980s trucks. Input, output, and shift lever seals are commonly aged and seeping. We inspect all seal surfaces and report on condition before shipping.
• PTO port configuration: some T19 units have a power take-off port on the case for commercial accessory drive applications (winches, hydraulic pumps). We note PTO port presence and condition.

T19 Gear Ratios and Applications

Critical buyer information for matching the T19 to your truck:

What Ships and What Does Not

Direct-Fit Vehicle Applications

Not sure if this fits? Call us at (240) 306-7051. We verify gear ratio, engine pairing, and PTO configuration before every order ships.

Used OEM Versus Professional Rebuild

For an F-250, F-350, Bronco, or commercial Ford truck with a worn T19, a documented used unit with gear ratio confirmed and synchronizer engagement tested is the cost-effective replacement path. For a high-mileage commercial truck or a heavy-towing build, a professional rebuild with fresh synchronizers, refreshed bearings, and new seals is the better long-term investment. Rebuilt T19 transmissions typically run $1,800 to $3,000 from established Ford truck specialist shops.

Inspection Workflow

• Test stand cycling through all 4 forward gears and reverse with shift quality logged
• First gear synchronizer engagement specifically assessed
• Gear ratio confirmed: 4.02, 5.11, or 6.32 first gear
• T18 versus T19 identification verified through tag numbers and shift pattern
• PTO port presence and condition documented
• Input shaft bearing noise evaluated
• External seal inspection at input, output, and shift lever

Pre-Purchase Buyer Notes

• Confirm gear ratio matches your application: a 4.02 first-gear T19 in a truck originally with a 5.11 ratio creates different launch feel and engine rpm at road speed. Match the gear ratio to your donor truck specification.
• Plan for no overdrive: if you need a highway overdrive ratio for fuel economy, the T19 is not the right transmission. The ZF5 5-speed (1987 onward) added overdrive and is the upgrade path.
• Refresh all seals at installation: aged input, output, and shift lever seals are common on 1970s and 1980s T19 units. Inexpensive insurance against post-install leaks.
• Verify T18 versus T19: if you specifically need a T19 (for the synchronized first gear), confirm via tag number, not visual inspection. The two look nearly identical externally.
• Plan a clutch refresh: a fresh clutch disc, pressure plate, throwout bearing, and pilot bearing at installation is standard practice. Labor is already invested.

Why Buy From Part Nests

• Gear ratio confirmed: 4.02, 5.11, or 6.32 first gear documented before payment
• T18 versus T19 distinction verified via tag number
• All 4 forward gears and reverse cycled on the test stand before shipment
• First gear synchronizer engagement specifically inspected
• PTO port configuration noted on every order
• No core return required
• Free freight delivery to every state
• 15 day replacement warranty against internal defects
• Call (240) 306-7051 to speak with someone who knows T19 gear ratio variants, T18 versus T19 identification, and Ford diesel and gas engine pairings