Dodge trucks and performance cars move a lot of used transmissions. In our sales records, Dodge is consistently our top make for used transmission orders — ahead of Ford, Nissan, and Chevy. The reason: Dodge owners tend to keep their trucks longer, and the 68RFE in particular has well-documented failure patterns that make a quality used replacement far more cost-effective than a rebuild.
This guide covers every common Dodge transmission by model and year, what to check before you buy, and what to avoid.
Dodge Transmission Compatibility Chart by Model and Year
| Vehicle | Years | Transmission | Speeds | Notes |
|---|---|---|---|---|
| RAM 1500 (Gas) | 2003–2008 | 545RFE | 5-speed auto | 5.7L Hemi, 4.7L; watch for TC shudder |
| RAM 1500 (Gas) | 2009–2012 | 66RFE | 6-speed auto | 4.7L; solenoid pack wear common |
| RAM 1500 (Gas) | 2013–2017 | 8HP70 / 8HP75 | 8-speed auto (ZF) | 5.7L / 3.6L; PCM relearn required after swap |
| RAM 1500 (Gas) | 2019+ | 8HP75 (updated) | 8-speed auto (ZF) | eTorque hybrid assist models — verify compatibility |
| RAM 2500/3500 (Gas) | 2010–2023 | 66RFE / 68RFE | 6-speed auto | Confirm 4×4 vs 4×2 output shaft |
| RAM 2500/3500 (Diesel 6.7L) | 2007–2023 | 68RFE | 6-speed auto | Most common diesel; solenoid + valve body failure typical after 150K |
| RAM 2500/3500 (Manual) | 2000–2020 | G56 | 6-speed manual | NV5600 on earlier diesels; clutch fork wear common |
| Dodge Charger / Challenger | 2005–2010 | 5-45RFE / NAG1 (W5A580) | 5-speed auto | NAG1 = Mercedes co-designed; fluid-sensitive |
| Dodge Charger / Challenger | 2011–2023 | 8HP70 / 8HP90 | 8-speed auto (ZF) | SRT/Hellcat = 8HP90; confirm torque rating |
| Dodge Durango | 2011–2023 | 8HP45 / 8HP70 | 8-speed auto | 3.6L = 8HP45; 5.7L = 8HP70 |
| Dodge Grand Caravan | 2000–2020 | 41TE / 62TE | 4-speed / 6-speed | 62TE from 2008+; solenoid pack is the common failure |
What to Look for When Buying a Used Dodge Transmission
1. Known Issues by Model
545RFE (RAM 1500, 2003–2008): The most common complaint is torque converter shudder between 40–50 mph. This usually means the TCC lock-up clutch is worn. When buying used, ask if the TC was serviced or replaced. A unit that “had a shudder” is not the same as one that was fluid-flushed and corrected.
68RFE (RAM 2500/3500 Diesel): Solenoid pack failure and valve body wear are standard failure points after 150K miles under towing loads. A good used 68RFE comes from a truck that was not heavily used for towing, has confirmed service history, and ideally has a separate cooler installed. Avoid any unit that slipped before being pulled.
8HP75 (RAM 1500, 2013+): ZF-designed and generally reliable, but requires a PCM adaptive learning reset after installation. Without this, the transmission will shift harshly or erratically for the first 50–200 miles. Your shop needs to run a Witech scan tool (or equivalent) to perform the reset.
62TE (Grand Caravan): Solenoid block failure is common at 120–150K. The transmission itself is often fine — it’s just the solenoid pack. When buying used, confirm it was not previously diagnosed with a solenoid code before the sale.
2. Fluid Condition Is the Most Important Tell
Dodge transmissions are sensitive to fluid condition. Before a unit ships, ask about the fluid color:
- Red/pink and clear: Good condition — fluid has been maintained
- Dark brown: Overheated or neglected — proceed with caution
- Black with metal sheen: Internal wear — avoid this unit
- Milky/cloudy: Coolant intrusion — do not buy
All Dodge automatics from 2011+ require ATF+4 fluid specifically. Using the wrong fluid accelerates clutch pack wear in as little as 30,000 miles. This is the single biggest reason used units fail prematurely after installation.
3. Mileage vs. Use History
A 68RFE with 95,000 miles on a fleet truck that towed 10,000 lbs regularly is more worn than one with 130,000 miles on a personal-use truck with no trailer. When evaluating mileage, ask:
- Was the truck used for towing or heavy hauling?
- Was an aftermarket transmission cooler installed?
- Was it fluid-flushed at regular intervals?
4. Matching Transfer Case Output Shaft
On 4×4 RAM trucks, the rear of the transmission connects to the transfer case via an output shaft. The spline count and output flange must match your specific transfer case model (NP231, NV241, NV271, etc.). If you’re replacing a 4×4 transmission, confirm the rear output matches your existing transfer case before the unit ships.
Used vs. Remanufactured Dodge Transmission: Which Should You Buy?
| Factor | Used (OEM) | Remanufactured |
|---|---|---|
| Cost | $850–$1,700 | $2,200–$3,800 |
| Source | Low-mileage pull from salvage yard | Core rebuilt to spec |
| Availability | Fast — ships in 1–3 days | 1–2 weeks lead time typical |
| Warranty | 30–90 days typical | 1–3 years typical |
| Best for | Trucks under 120K original miles, budget-conscious | High-mileage trucks, heavy towing |
| Risk | Source condition unknown without testing | Labor cost if failure during warranty |
For most RAM 1500 owners with trucks under 150,000 miles who don’t tow heavy, a quality used transmission from a verified low-mileage source is the right call. The cost difference is $800–$2,000 — money better spent on installation labor and a fresh ATF+4 service.
For RAM 2500/3500 diesel owners who tow regularly, a remanufactured 68RFE with an upgraded valve body is worth the premium — the stock valve body is the known failure point and reman units often address it.
Installation Notes: What Your Shop Needs to Know
- 8HP70/8HP75/8HP90 (ZF 8-speed): Requires PCM adaptive reset after installation. Without it, the transmission will not shift correctly. This is not a defect — it is a design requirement.
- 68RFE: Upgrade the transmission cooler at installation time. The factory cooler is undersized for anything beyond light towing.
- NAG1 (Charger/Challenger 2005–2010): Requires Mercedes-spec fluid (236.14 or 236.15). Standard ATF+4 will cause clutch pack failure within 20,000 miles.
- All units: Replace the filter and fill with fresh ATF+4 before startup. Do not run an old filter with a used transmission.
Where FirstChoice Gets Used Dodge Transmissions
We source used transmissions from a network of verified salvage yards across the United States. Every unit we quote comes with:
- Confirmed mileage from the yard’s records
- Basic leak inspection before shipment
- Nationwide shipping — most units deliver in 2–5 business days
- A warranty period covering defects at arrival
We do not ship units that have visible external damage, confirmed internal noise at the time of pull, or missing bellhousing bolts. If the unit doesn’t pass our sourcing checklist, we find a different one.
Frequently Asked Questions
How much does a used Dodge RAM transmission cost?
A used Dodge RAM transmission typically costs $350–$1,000 for the unit itself, depending on year and model. The 68RFE for diesel RAM 2500/3500 trucks runs $500–$1,100. Installation adds $400–$900 in labor. Total out-of-pocket is usually $800–$1,800 — versus $3,000–$5,000 for a dealer remanufactured unit.
What transmission does a RAM 1500 have?
It depends on the year: 2003–2008 use the 545RFE (5-speed), 2009–2012 use the 66RFE (6-speed), and 2013+ use the ZF 8HP75 (8-speed). Each is a different unit and is not interchangeable. Always confirm your exact year and engine size before ordering.
What transmission does a RAM 2500/3500 diesel have?
The RAM 2500/3500 with the 6.7L Cummins diesel uses the 68RFE 6-speed automatic from 2007 onward. The 68RFE is the most common used Dodge transmission we ship — it has a well-known solenoid pack failure pattern after 150K miles under towing loads.
Do I need to reprogram a used Dodge transmission?
For ZF 8HP units (2013+ RAM 1500, Charger, Challenger, Durango): yes, your shop needs to perform a PCM adaptive relearn after installation. For 68RFE and 66RFE units: typically no programming is required, though a transmission relearn drive cycle is recommended. For NAG1 units (2005–2010 Charger/Challenger): no programming, but correct fluid type is mandatory.
What warranty comes with a used Dodge transmission from FirstChoice?
Warranty terms vary by the specific unit and source yard, but typically range from 30–90 days covering defects upon delivery. We recommend confirming the warranty details when you get your quote. Installation by a licensed shop is required for warranty eligibility on all units.
Can I use a RAM 1500 transmission in a RAM 2500?
No. The RAM 1500 and RAM 2500/3500 use different transmissions with different torque ratings, bolt patterns, and output shaft configurations. They are not interchangeable. The RAM 2500/3500 uses the 68RFE; the RAM 1500 uses the 66RFE or 8HP75 — different units entirely.
How do I know if my Dodge transmission is bad vs. something else?
Key signs the transmission itself is the problem: slipping between gears (RPM rises without acceleration), hard shifts or clunking, no forward or reverse movement, and transmission warning light with codes P0700–P0750 range. Symptoms that may not be the transmission: rough idle at stop (torque converter), vibration at highway speed (driveshaft or U-joints), or shudder on light acceleration (could be TCC lockup — a calibration issue, not always a mechanical failure).