Remanufactured 6R140 Transmission for Ford Super Duty

The Ford 6R140 TorqShift transmission was engineered for one purpose: handling extreme torque in Super Duty trucks. Found behind both gas and diesel engines, this unit sees hard use every day—towing, plowing, hauling, and fleet service.

While the 6R140 is one of Ford’s strongest automatic transmissions, sustained heat, heavy loads, and high mileage eventually expose weak points in the converter, clutch packs, and valve body. When that happens, partial repairs rarely hold up.

ACE’s remanufactured 6R140 delivers a heavy-duty, install-ready solution built to restore reliability under real-world working conditions—not just light-duty driving.

Built for Towing, Fleet, and Commercial Use

ACE remanufactures the 6R140 with durability as the priority. Every build is designed to withstand sustained load, high temperatures, and long duty cycles.

Key build upgrades include:

Heavy-duty torque converter rebuild with improved lock-up clutch material for towing applications
Upgraded clutch packs and steels using high-energy friction materials
Re-machined pump assembly to restore proper line pressure and flow
Valve body reconditioning to correct pressure loss and shift instability
New seals, bushings, and bearings throughout the unit
Full-load dyno testing to verify shift timing, pressure stability, and converter lock-up

This is not a “freshened” transmission. It’s a complete remanufacture built to handle the same jobs these trucks were designed for.

Common 6R140 Transmission Problems

Shops typically see the following failures on high-mileage or hard-working 6R140 units:

Torque converter clutch slip or failure under heavy load
Harsh or delayed shifts, especially when cold or under tow
Pressure regulator valve wear, leading to low line pressure
Overdrive clutch damage from sustained heat
Limp-mode activation caused by pressure or temperature faults

ACE addresses these issues at the component level, preventing repeat failures and comebacks.

What’s Included with Every ACE 6R140

Each remanufactured 6R140 transmission includes:

Fully remanufactured and dyno-tested unit
Upgraded torque converter, built for heavy-duty use
All new clutches, seals, bushings, and wear components
Mobil 1 synthetic transmission fluid, shipped with the unit
Comprehensive warranty coverage — parts, labor, shipping, and Mobil 1 fluid included (details here)

Everything arrives ready for installation, reducing downtime and surprises.

Compatible Applications

The 6R140 transmission is commonly used in:

Ford F-250 Super Duty (2011–2019)
Ford F-350 Super Duty (2011–2019)
Ford F-450 / F-550 Super Duty (2011–2019)
Gas and diesel configurations, including Power Stroke applications

If you’re servicing newer 10-speed Super Duty trucks, those use a different transmission family—contact ACE to confirm availability.

Shipping That Keeps Your Bays Moving

Super Duty trucks don’t sit idle for long—especially in fleet or commercial service.
ACE keeps popular 6R140 variants in stock and ready to ship.

Same-day shipping available on in-stock units
Secure crating designed for heavy transmissions
Nationwide carrier network with tracked delivery

We coordinate delivery to your shop or installer so you can plan labor efficiently.

Core Return Policy — No Upfront Deposit

ACE’s “Due On Receipt” core policy is designed for working shops:

No upfront core deposit charged at checkout
Core invoice issued on paper only
120 days to return the rebuildable core
Prepaid return labels included
Core invoice cleared once received

This keeps cash flow steady—especially important for large, heavy-duty jobs.

Warranty Coverage Built for Real Work

Every ACE 6R140 includes full warranty protection:

Parts and labor
Inbound and outbound shipping for approved claims
Mobil 1 synthetic fluid included with every unit

You’re covered whether the truck is a daily hauler or a fleet vehicle logging thousands of miles per month. Full terms available at acetransmissionreman.com/warranty.

Installation Notes & Best Practices

For best results and warranty compliance:

Flush or replace cooler lines to remove debris and heat damage
Inspect auxiliary coolers on tow vehicles
Relearn procedures may be required using Ford IDS
Reuse and reprogram the original TCM—ACE does not include pre-programmed modules
Fill using only Mobil 1 LV ATF HP or Ford-approved equivalent

These steps help ensure smooth operation and long service life.

Fleet & Wholesale Support

ACE works directly with:

Transmission rebuild shops
Diesel repair facilities
Fleet maintenance teams
Municipal and commercial service providers

Wholesale accounts receive priority support and volume pricing. Apply at acetransmissionreman.com/wholesale.

Why Shops Trust ACE for 6R140 Builds

When a Super Duty truck is down, the cost goes beyond the repair bill. Lost productivity matters.
Shops rely on ACE because we deliver:

Consistent, heavy-duty builds
Clear warranty coverage
Fast turnaround and dependable shipping
Fewer comebacks on high-load applications

We build transmissions the way you work—no shortcuts.

6R140 Transmission FAQs

Q: Is the 6R140 suitable for heavy towing after remanufacture?
Yes. ACE builds every 6R140 with upgraded clutches and converters designed for towing and commercial use.

Q: Does ACE include the torque converter?
Yes. Every unit ships with a fully rebuilt, heavy-duty torque converter.

Q: Is programming required after installation?
In some cases, yes. A relearn using Ford IDS is recommended to optimize shift performance.

Q: Can ACE ship directly to my installer or fleet location?
Yes. We ship nationwide and coordinate delivery as needed.

Q: How quickly can a 6R140 ship?
Most in-stock units ship same-day and arrive within 2–3 business days, depending on location.

The Bottom Line

You need a remanufactured transmission designed to handle towing, hauling, and long service cycles without compromise.

Strong builds. Clear warranty. No surprises.
That’s the ACE standard.