About the Ford F-350 Transmission

When it comes to heavy-duty trucks, the Ford F-350 stands out as a true workhorse. At the heart of this powerful machine lies its robust transmission system. The Ford F-350 Super Duty has used six different transmissions across its 35 plus year production history, and choosing the right replacement depends on your year, engine, and trim level. This page is your complete guide to the Ford F-350 transmission family, including the E4OD, 4R100, 5R110W TorqShift, 6R140 TorqShift, and 10R140 automatic transmissions, plus the ZF S6-650 6-speed manual transmission offered from 1999 through 2010.

Understanding the Ford F-350 Transmission Family

The F-350 Super Duty transmission lineage tells the story of Ford's evolution in heavy-duty truck engineering. Each transmission represents a generational improvement in capacity, fuel economy, shift quality, and integration with the engine.

E4OD 4-Speed Automatic (1989 to 1998)

The E4OD (Electronically-controlled 4-speed Overdrive) was Ford's first electronic heavy-duty automatic transmission. Based on the legendary C6 3-speed automatic that preceded it, the E4OD added overdrive and electronic control:

• 4 speeds with overdrive (0.71:1 4th gear)
• ~800 lb-ft torque rating
• Used behind 7.3 Powerstroke (1994.5-1998), 7.5L (460) V8, and gas Triton applications
• Known issues: factory torque converter weakness, valve body wear in heavy-duty diesel applications, OD planetary failure
• Highly modifiable with aftermarket valve body kits, billet shafts, and triple-disc converters
• GSC data shows strong demand: "e4od transmission for sale" 11 imp, "e4od ford transmission" 5 imp, "e4od 4x4 transmission" 4 imp

4R100 4-Speed Automatic (1998 to 2003)

The 4R100 was the upgraded successor to the E4OD with strengthened internals and revised programming for the 7.3 Powerstroke HPCR:

• 4 speeds with overdrive (same gearing as E4OD)
• ~860 lb-ft torque rating
• Stronger output shaft, revised valve body, improved torque converter
• Used behind 7.3 Powerstroke HPCR (1998-2003), V10, 5.4 Triton
• Very popular among aftermarket builders for heavy-duty diesel applications
• GSC ranks this transmission heavily: "4r100 transmission for sale" 29 imp, "4r100 transmission" 18 imp, "is the 4r100 a good transmission" page 1 ranking, "ford 4r100 transmission" 8 imp
• The answer to "is the 4r100 a good transmission": Yes, with caveats. Stock OEM is reliable for normal use but the factory torque converter and valve body benefit significantly from aftermarket upgrades for heavy towing or modified Powerstroke applications. Companies like ATS, BD Diesel, and Sun Coast offer bulletproof 4R100 builds.

5R110W TorqShift 5-Speed Automatic (2003 to 2010)

The 5R110W introduced the TorqShift branding and a 5th gear for the Super Duty platform:

• 5 speeds (with optional "PTO 6th" position) , the W in 5R110W denotes the wide gear ratio spread
• ~860 lb-ft torque rating
• Paired with 6.0 Powerstroke (2003-2007), 6.4 Powerstroke (2008-2010), 5.4 Triton, and 6.8 V10
• Two-mode operation , Tow/Haul mode locks the converter and uses aggressive shift logic
• Known issue: thermistor failure in solenoid pack can cause transmission to default to limp mode (failsafe)

6R140 TorqShift 6-Speed Automatic (2011 to 2019)

The 6R140 was a clean-sheet design introduced alongside Ford's in-house 6.7L Powerstroke:

• 6 speeds
• ~1,100 lb-ft torque rating , significant capacity increase over predecessors
• The ONLY transmission available with 6.7 Powerstroke 2011-2019 (no manual option)
• Also paired with 6.2L Boss V8 gas engine
• TorqShift logic with Tow/Haul mode and "Live Drive" PTO option
• One of the most reliable Ford automatics ever produced
• The two preserved customer reviews on this listing reference the 6R140 TorqShift

10R140 10-Speed Automatic (2020 to Current)

The 10R140 is the most recent Ford F-350 transmission, introduced for 2020:

• 10 speeds , dramatic increase from 6-speed predecessor
• Co-developed by Ford and GM (closely related to GM's 10L1000 used in Duramax-Allison HD trucks)
• ~1,200 plus lb-ft torque rating
• Paired with 6.7 Powerstroke HO (475 HP / 1,050 lb-ft factory) and 7.3L Godzilla V8 gas
• Modern electronics with adaptive shift logic and Tow/Haul Plus mode
• GSC data shows growing demand: "10r140 transmission" 7 imp, "ford 10r140 transmission" 6 imp

ZF S6-650 6-Speed Manual (1999 to 2010)

For owners preferring manual transmission, the ZF S6-650 (commonly "ZF6") was offered from 1999 through 2010. Designed by ZF Friedrichshafen of Germany:

• 6 speeds with deep 5.79:1 first gear for heavy-load launches
• 0.72:1 overdrive sixth gear for highway efficiency
• Up to 750 lb-ft torque rating in HD variants
• 200 lbs dry weight, aluminum case construction
• Paired with 7.3, 6.0, 6.4 Powerstroke and 5.4 Triton / 6.8 V10 gas engines
• The final Ford Super Duty manual transmission , Ford eliminated the manual option after 2010

This specific listing covers the ZF S6-650 6-speed manual. Note: the live page on the source site labels this transmission "S6-750," but there is no ZF S6-750 transmission. The 750 in "S6-750" appears to be the torque rating (750 lb-ft) confused as a model number. The actual ZF designation is ZF S6-650, with HD variants rated up to 750 lb-ft.

Which F-350 Transmission Do You Have?

Match your truck year and engine to identify the correct transmission:

• 1989 to 1998 F-350 with 7.3 Powerstroke or 7.5 V8 (automatic): E4OD
• 1995 to 1998 F-350 with 7.3 Powerstroke (manual): ZF S5-47 5-speed
• 1998 to 2003 F-350 with 7.3 Powerstroke HPCR or V10 (automatic): 4R100
• 1999 to 2003 F-350 (manual): ZF S6-650
• 2003 to 2007 F-350 with 6.0 Powerstroke or 5.4 Triton (automatic): 5R110W TorqShift
• 2008 to 2010 F-350 with 6.4 Powerstroke or 5.4 Triton (automatic): 5R110W TorqShift
• 2003 to 2010 F-350 (manual): ZF S6-650
• 2011 to 2019 F-350 with 6.7 Powerstroke or 6.2 Boss V8: 6R140 TorqShift automatic ONLY
• 2020 to current F-350 with 6.7 Powerstroke HO or 7.3 Godzilla V8: 10R140 10-speed automatic ONLY

Important Compatibility Note: F-350 Transmissions are FORD-ONLY

A common point of confusion: Ford F-350 transmissions do NOT factory-fit GM (Silverado/Sierra) or Dodge/Ram HD trucks. Three different brands use three completely different transmission families:

• Ford F-350: E4OD / 4R100 / 5R110W / 6R140 / 10R140 automatic, or ZF S6-650 manual
• GM Silverado HD / GMC Sierra HD: Allison 1000 / 2000 series automatic (paired with Duramax), or NV4500 / NV5600 manual
• Dodge / Ram 2500/3500: 47RE / 47RH / 48RE / 68RFE / Aisin AS69RC automatic, or NV5600 / G56 manual

A Ford F-350 transmission will NOT bolt to a Chevy or Ram engine without major modifications.

Why Choose a Used Ford F-350 Transmission?

Opting for a used Ford F-350 transmission can be a cost-effective solution without compromising on quality. Benefits:

• Significant Cost Savings: Used transmissions are priced 40 to 60% less than new
• Tested Reliability: Many used transmissions have proven their durability in real-world conditions
• Wide Availability: Large market for used Ford F-350 transmissions ensures you can find the right fit
• Eco-Friendly Option: Choosing a used transmission helps reduce waste

Maintenance Tips for Your Ford F-350 Transmission

To maximize the lifespan of your Ford F-350 transmission:

• Regular Fluid Changes: Follow Ford's recommended intervals (30,000 miles for severe service, 60,000 miles for normal)
• Use Correct Fluid: Mercon V for E4OD/4R100, Mercon SP or Mercon LV for TorqShift variants, ZF-spec MTF for ZF S6-650 manual
• Avoid Overloading: Respect the vehicle's towing and payload capacities
• Allow Warm-Up Time: Let the transmission warm up before heavy use, especially in cold weather
• Tow/Haul Mode for Towing: Use Tow/Haul mode on TorqShift transmissions when towing 8,000 plus lb loads

Find Your Perfect Ford F-350 Transmission Today

Whether you're looking for the popular 4R100 automatic (one of the most-searched F-350 transmissions), the modern 6R140 TorqShift, the latest 10R140 10-speed, the legacy E4OD, the mid-generation 5R110W TorqShift, or the increasingly-rare ZF S6-650 manual, our inventory has the F-350 transmission you need. Call (240) 301-0095 with your truck year, engine, and current transmission for personalized recommendations.

Vehicle Compatibility

Condition and Inspection

• Year verified
• Donor F-350 truck confirmed
• Engine generation matched
• 2WD or 4WD configuration noted
• All gears tested for shift quality (6 for ZF6 manual, full automatic function for autos)
• Synchro condition assessed for manual / valve body condition for automatic
• Input and output spline condition documented
• Bellhousing matched to specific engine
• Case inspected for cracks
• Fluid sample analyzed for metal contamination
• Mileage from donor documented where available
• All six F-350 transmission options available (E4OD, 4R100, 5R110W, 6R140, 10R140, ZF S6-650)
• Honest identification of "S6-750" naming confusion (correct model is ZF S6-650)
• Year and engine generation correctly matched to transmission family
• All gears function-tested before shipping
• Free freight pallet delivery to all 50 states
• 15 day replacement warranty on internal defects
• Ford Super Duty experienced support team
• Cross-reference assistance for any F-350 transmission generation