Big 3 Engines

Engines • Transmissions • Installation

Ford 6R140 Transmission Replacement & Rebuilds

Compare 6R140 replacement assemblies and a rebuild of your original Super Duty transmission. Send the VIN, transmission tag and drivetrain details for an application-specific quote.

Compare replacement, rebuild & installation paths

Super Duty work trucks

Build the quote around the truck and the work.

Tell us what failed, what the vehicle does every day and what the diagnosis found. A transmission quote should cover the assembly and the supporting work needed to put the vehicle back in service.

What to send for a useful quote

  • VIN, model year, engine and original transmission tag.
  • Pickup or chassis cab; 2WD/4WD and any PTO equipment.
  • Fault codes, symptoms, previous repairs and towing or fleet duty.
  • Converter and control-unit scope, programming, cooling-system work and installation responsibilities.

Compare the complete repair

Ask for assembly or rebuild cost, supplied components, installation, programming, supporting repairs and transport to be itemized. Do not assume a converter, cooler service, controls or tuning are included unless the quote says so.

Confirm product-specific warranty and the schedule before payment. If exchange terms are unclear, ask whether a matching, rebuildable core or a separate deposit is required.

Start with an actual catalog assembly

These are selected listings, not a fitment guarantee or an inventory promise. Open the product for its current price and terms; compare all variants below and confirm the exact assembly with Big 3.

Questions before scheduling

Will any 6R140 fit my Super Duty?

No. Confirm the exact part number against the VIN, original transmission identification, engine, drivetrain and control requirements. Listings with the same family name can represent different applications or supplied components.

Can Big 3 quote installation or a work-truck repair?

Yes. Ask about installation at our East Texas shop and include the diagnosis, vehicle configuration and work requirements. Installation, supporting repairs and vehicle transport are separate unless included in the written quote. Visits and vehicle arrival must be scheduled.

What if the truck is modified or used for heavy towing?

Disclose tuning, engine changes, towing use and operating conditions before the quote. Do not assume a stock assembly or rebuild carries an increased torque rating or covers a modified application. Agree on the intended use and written warranty for the exact build.

Identify the transmission before choosing a product

Model name, trim and engine displacement are starting details. They do not establish transmission interchange. Send the VIN, model year, engine code, 2WD/4WD configuration and a photo of the original transmission identification label.

These guides cover selected families. If your transmission code is different or unknown, request identification help; the absence of a guide or catalog match does not mean the assembly cannot be supplied.

Planning your 6R140 purchase

Identify the original 6R140, engine, pickup or chassis-cab configuration and 2WD/4WD layout. Confirm the converter, controls, programming and supporting repairs in the written scope. A 6R140 listing is not a substitute for a 10R140 or another Ford transmission.

Confirm my application with Big 3

Current catalog options

These are catalog product-name matches, not a verified vehicle fitment list. Open the listing for the exact application, assembly, availability and written warranty. Product prices exclude separately quoted core deposits and order-specific charges.

Loading catalog products…

Page 1

Confirm my application

Product-name matches are browsing options. Big 3 must confirm the selected assembly against your vehicle details and the supplier record before purchase.

Send my VIN and transmission details

Inside the transmission

More than a case and a part number.

Follow our transmission work from the opened unit to the components on the bench. Bring us your vehicle details and symptoms so we can plan the right repair or replacement.

Hands-on transmission component work
Valve body during bench work
Clutch and shaft assembly over the workbench
Opened transmission case in the shop
Gear and shaft assembly detail

29 seconds inside the job

Watch the teardown unfold.

A stop-motion edit made from our shop’s sequential photographs. An opened transmission, component removal and a closer look inside.

An edited shop-work sequence, not an installation or repair tutorial.

Have a project in mind?

Tell us what you drive and what you want to change.

Discuss my transmission →Talk to Big 3 · 903-262-9502

Actual Big 3 shop projects shown. Photos illustrate different jobs and stages of work; included parts, fitment, finish and services are defined by your selected listing or written quote.

Hands-on transmission component work

Hands-on transmission component work