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Ram 2500 / 3500 • 6.7L Cummins • 68RFE

68RFE Transmission for Sale for Dodge / Ram 2500 and 3500 6.7L Cummins

Quality by Design. Monster by Nature.

Stock replacement to 700+ HP competition builds. Every Monster 68RFE ships with a matched torque converter, is dyno tested, and is built in the USA with custom in-house parts like our Big Stack Drum.

Since 2003 20+ years building transmissions
Built in the USA In-house custom parts & dyno tested
Up to 6 Year Warranty Unlimited miles on select builds
1-800-708-0087 Talk to a real Monster build expert
In Stock
$4,299
RoadReady 68RFE transmission and torque converter for 2007.5 to 2018 Ram 2500 3500 6.7L Cummins, stock replacement
Best for stock replacement

68RFE Transmission | RoadReady OEM Replacement | Stock HP

HP capacity Stock
  • OEM style replacement for stock power daily drivers and work trucks
  • Refreshed frictions, bushings, seals, and serviceable wear components
  • Factory smooth shift feel with dependable street and light duty towing manners
  • Stock replacement, basic rebuild replacement, or worn original 68RFE
  • 3 Year Warranty • Unlimited Miles
Shop RoadReady →
★ Most Popular
$4,899
StreetMonster 68RFE transmission for sale with upgraded valve body, Ram 2500 3500 6.7 Cummins, 100 HP over stock
Best for mild tune & light tow

68RFE Transmission | StreetMonster Stage 1 | 450 HP

HP capacity 450 HP
  • Upgraded valve body strategy for stronger pressure control under load
  • Billet spring retainer and threaded filter adapter for improved durability
  • Excellent choice for mild power, daily driving, and light to moderate towing
  • Tuned street trucks, oversized tires, and added weight over stock
  • 3 Year Warranty • Unlimited Miles
Shop StreetMonster →
✓ Best Value • 6 Yr Warranty
In Stock
$7,194.95
SportMonster 68RFE transmission rebuild with dual friction converter, 600 HP Ram Cummins towing build
Best for heavy tow & tune

68RFE Transmission | SportMonster Stage 2 | 600 HP

HP capacity 600 HP
  • Custom big stack overdrive shaft built for repeated high torque use
  • Clutch count increased by 33% for more holding power under towing and tune load
  • Dual friction converter with stamped forged cover for better lockup durability
  • Frequent towing, tuned diesel trucks, and heavier working applications
  • 6 Year Warranty • Unlimited Miles
Shop SportMonster →
In Stock
$8,395
TrackMonster 68RFE transmission with billet input shaft and multi disc converter, 700+ HP Dodge Cummins competition build
Best for 700+ HP builds

68RFE Transmission | TrackMonster Stage 3 | 700+ HP

HP capacity 700+ HP
  • Billet input shaft built for aggressive power delivery and competition use
  • Custom big stack overdrive shaft and stronger hard part strategy for extreme load
  • Billet multi disc converter for maximum holding power under heavy lockup demand
  • Serious horsepower, drag, competition, and max effort Cummins builds
  • 1 Year Warranty • Unlimited Miles
Shop TrackMonster →

Still not sure which 68RFE you need?

A $4,000 to $8,000 transmission decision should not be a guess. Call a real Monster build expert. We will match the right build to your truck, power, towing, and budget before you buy.

✆ 800-708-0087 Mon to Fri 8am to 6pm EST, Sat open
Build comparison

What’s inside each 68RFE build

RoadReady

Stock replacement

Best for getting a worn out Ram back on the road with factory like drivability and dependable shift feel.

  • OEM style replacement strategy
  • Fresh frictions, bushings, seals, and service parts
  • Great fit for stock trucks and daily duty use
  • Ideal when you need a remanufactured 68RFE without moving into performance territory
StreetMonster

Mild power and towing

For drivers who need more holding control than a basic rebuilt 68RFE, but do not need a max effort race build.

  • Upgraded valve body pressure strategy
  • Billet spring retainer
  • Billet threaded filter adapter
  • Good step up for light towing, tune support, and heavier street use
SportMonster

Heavy tow and tune

Designed for trucks that see frequent trailer load, added heat, and repeated converter demand under real diesel work.

  • Custom big stack overdrive shaft
  • 33% higher clutch count for more holding power
  • Dual friction converter with forged cover strategy
  • Built for tuned tow rigs and 600 HP class applications
TrackMonster

Competition and 700+ HP

When the truck is far past factory intent, this is the build that targets the hardest launches and the heaviest lockup events.

  • Billet input shaft
  • Big stack overdrive shaft strategy
  • Billet multi disc converter
  • For serious horsepower, drag, sled pull, and high stress competition use
Common failures

Common 68RFE problems we address

Real-world 68RFE failure modes, diagnostic trouble codes, and the proven upgrade paths that address them. If any of these sound like your truck, the right Monster build is designed to prevent a repeat failure, not just replace the worn unit.

P0740 · P0741 · P0871

TCC slip and lockup failure

The stock 68RFE torque converter clutch is one of the most common failure points under diesel load. Owners routinely see P0740 (TCC circuit), P0741 (TCC stuck off), and P0871 (3-6 / overdrive pressure) codes once the friction material begins to burn. Our SportMonster and TrackMonster builds move to a multi-disc billet converter strategy with increased lockup torque capacity to resist burn-through during towing and tune use.

P0868 · P0944

Valve body pressure loss and shift flare

Weak line pressure control inside the OE valve body creates soft shifts, flare between gears, and accelerated clutch wear. Codes like P0868 (line pressure low) and P0944 (loss of hydraulic pressure) often point here. Proven fixes use billet accumulator pistons, stronger pressure regulator springs, and corrected shift calibration. StreetMonster and up target this area directly.

In-house • P0731 · P0736

Overdrive stress & the Big Stack Drum

Repeated high torque events punish the overdrive section, particularly the 4C clutch hub, the overdrive planet, and the input/overdrive shafts. Our Big Stack Drum is built in house with a custom double friction plate strategy you will not find in a standard 68RFE rebuild. It is one of the biggest reasons our SportMonster and TrackMonster builds survive the hardest tow and tune load cycles.

P0751 · P0756

Burnt underdrive and 2C clutches

Heat, slip, and soft shifts stack up fast on a 68RFE, destroying underdrive packs and glazing 2C frictions. P0751 and P0756 (shift solenoid performance) often appear once clutch clearance opens up. Our SportMonster adds up to 33% more clutch count combined with matched converter strategy to reduce the heat load that kills clutches in the first place.

Install critical

Cooler contamination after a previous failure

Debris trapped in the transmission cooler and lines is the number one cause of comeback failures on any 68RFE install. When a converter or clutch burns up, metallic particles coat the cooler and return to kill the new unit within weeks. Our install checklist requires flushing or replacing the cooler and both lines, no exceptions, along with fresh ATF+4 on first fill.

P0750 · P0755 · P0867

Solenoid pack failure and line pressure codes

Solenoid block failures trigger P0750 / P0755 (shift solenoid) and P0867 (transmission fluid pressure), and show up as harsh shifts, limp mode, or stuck gears. OE Mopar solenoid packs remain the reliability baseline, and full electrical and pressure validation is part of every complete Monster 68RFE build before it leaves the bench.

Year targeting

68RFE by model year for Ram 2500 and 3500

2007.5 to 2012 Ram 2500 / 3500 68RFE

Early 6.7L Cummins trucks are a common source of stock replacement and tow upgrade searches. If your truck is in this range and still on the original transmission, a remanufactured or upgraded 68RFE is often a smarter long term move than repeating a minimal rebuild.

2013 to 2018 Ram 2500 / 3500 68RFE

This is one of the highest value year groups for towing, tune support, and replacement shoppers. StreetMonster and SportMonster are typically where many of these owners land when tire size, trailer weight, or added power push the truck beyond stock expectations.

2019+ Ram 2500 / 3500 68RFE

Later trucks still need the same core buying logic. Match the build to power, heat, trailer weight, and use. Confirm fitment by VIN before ordering, especially if the truck has been modified, used commercially, or paired with custom tuning.

Model year Primary application Typical buyer need Recommended direction
2007.5 to 2012 Ram 2500 / 3500 6.7L Cummins Worn original unit, towing strain, rebuild replacement RoadReady for stock replacement, StreetMonster for mild upgrades
2013 to 2018 Ram 2500 / 3500 6.7L Cummins Heavy towing, tune support, bigger tires, added heat StreetMonster or SportMonster depending on real load and power
2019+ Ram HD 6.7L Cummins with 68RFE applications Late model replacement, work truck durability, future power goals Confirm VIN, then match build tier to towing and horsepower target

Fitment should always be confirmed by VIN, OE tag information, and actual vehicle configuration before purchase.

68RFE transmission buying guide

If you are comparing a rebuilt 68RFE, a remanufactured 68RFE, and a full upgraded transmission for your Cummins truck, start with how the truck is actually used. A stock daily driver has very different needs than a heavy tow rig, a tuned street truck, or a competition setup. Price matters, but so do converter strategy, line pressure behavior, clutch holding capacity, hard part strength, cooling, and long term warranty support.

ATF+4 only

The correct 68RFE transmission fluid is ATF+4. Using the wrong fluid can affect clutch apply timing, shift behavior, and long term durability. After installation, verify level at operating temperature and replace both filters (the pan filter and the spin-on cooler filter).

Why the converter matters so much

On a diesel application, the 68RFE torque converter is one of the biggest durability factors on the truck. Heat, towing load, added torque, and repeated lockup demand can punish a weak converter quickly. This is where P0740 and P0871 codes come from. That is why all four builds include a matched converter instead of treating it like an afterthought.

Installation checklist

  • Replace both filters (pan and spin-on) before final fill
  • Flush or replace the transmission cooler and both lines, no exceptions
  • Fill only with ATF+4
  • Verify final fluid level warm, not cold
  • Perform Quick Learn and adaptive reset with a capable scan tool
  • Complete the correct drive cycle before towing or adding load
  • Recheck for leaks and correct operation after heat cycles

68RFE vs Aisin AS69RC

Some Ram buyers are not sure whether the truck has a 68RFE or an Aisin AS69RC. They are different transmissions with different parts, different build strategies, and different product pages. Verify by VIN, build sheet, or the transmission tag before ordering. Many late model 3500 Max Tow trucks use the Aisin, while most 2500 and many 3500 applications use the 68RFE.

FAQ

68RFE transmission FAQs

What is the best 68RFE transmission for sale for my truck?
The right build depends on how your Ram is used. RoadReady fits stock replacement needs. StreetMonster is a better match for mild power and lighter towing. SportMonster is built for heavier diesel work and tune support. TrackMonster is intended for serious horsepower and competition use.
What trucks use the 68RFE transmission?
This unit is commonly associated with Ram 2500 and many Ram 3500 diesel applications behind the 6.7L Cummins. Always verify by VIN or transmission tag before ordering because some trucks in the same family may use an Aisin AS69RC instead.
What do codes P0740, P0871, and P0750 mean on a 68RFE?
P0740 and P0741 point to torque converter clutch circuit and stuck-off issues, usually caused by TCC slip or burnt converter friction material. P0871 points to 3-6 / overdrive pressure problems. P0750 and P0755 point to shift solenoid performance, typically a failing solenoid pack. All three are common 68RFE failure flags and are exactly the kinds of issues a properly matched build is designed to prevent.
Is a torque converter included with these 68RFE builds?
Yes. Each complete build on this page includes a matched converter. That matters because converter quality affects heat, lockup control, towing behavior, and long term durability under diesel torque.
What fluid does a 68RFE use?
Use ATF+4. It is the correct fluid choice for shift quality, clutch apply behavior, and durability. Replace both filters (pan and spin-on) and verify fluid level warm after installation.
What are the most common 68RFE failures?
The most common failures include TCC lockup slip, burnt underdrive and 2C clutches, overdrive section stress, valve body pressure loss, solenoid pack failure, and cooler contamination after a prior failure. Those are exactly the issues a better matched build and proper install process are meant to address.
What is the difference between a rebuilt 68RFE and an upgraded build?
A basic rebuilt transmission is often focused on getting the unit working again. An upgraded build is selected around actual truck use and may add better converter strategy, stronger pressure control, improved holding capacity, or stronger hard parts depending on the level chosen.
Do I need a Quick Learn after installing a 68RFE?
Yes. A proper Quick Learn and adaptive reset help the transmission establish the correct clutch volume indexes and shift behavior after installation. Skipping this step can cause harsh shifts, reduced clutch life, and unnecessary warranty concerns.
Is the 68RFE good for towing?
It can be, as long as the transmission build, converter, cooling, and fluid strategy match the actual trailer weight and power level. For serious tow use, stepping above a stock style replacement is often the smarter long term move.
How do I know if I have a 68RFE or an Aisin AS69RC?
Check the VIN, build sheet, or transmission identification tag. Ram buyers often cross shop these units, but they are different transmissions and should not be ordered based on guesswork. Many Max Tow 3500 applications use the Aisin while most 2500s and many standard 3500s use the 68RFE.
Should I choose RoadReady, StreetMonster, SportMonster, or TrackMonster?
Choose based on stock versus tuned power, trailer weight, tire size, and how hard the truck is used. RoadReady is stock replacement. StreetMonster is the entry performance step. SportMonster is for heavier tow and tune use. TrackMonster is for high horsepower builds that need the strongest setup on this page.