The 2007 Ram 1500 used different transmissions depending on the engine and trim. In short, most models with the 3.7L V6 or the 4.7L V8 use a 4-speed automatic, while the 5.7L Hemi uses a 5-speed automatic.
In the 2007 Ram 1500 lineup, transmissions were paired with three engines; below is a breakdown by engine and typical pairing. Exact equipment can vary by build, so check the vehicle’s VIN or window sticker for certainty.
Transmission options by engine
Below is a quick guide to the common transmission pairings for each engine in the 2007 Ram 1500 lineup.
- 3.7L V6: 4-speed automatic transmission (commonly a 42RLE-family unit)
- 4.7L V8: 4-speed automatic transmission (part of the 4-speed automatic family; various code names exist across model years and trims)
- 5.7L Hemi: 5-speed automatic transmission (typically the 545RFE family)
Because production spanned multiple trims and build dates, there are variations. Verify the exact transmission on a given vehicle via the VIN, transmission stamped codes, or the original window sticker.
How to confirm the exact transmission in your truck
For buyers or owners seeking precise identification, use these steps:
- Check the VIN or original window sticker to confirm the engine and transmission pairing for your specific truck
- Look for the transmission model number stamped on the transmission case or in service documentation (e.g., 42RLE, 45RFE, 545RFE) to identify the exact family
- Consult the owner's manual or dealership history for the original specification and any later replacements
Knowing the exact transmission helps with maintenance planning, parts compatibility, and potential recalls or service advisories.
Summary
The 2007 Ram 1500 offered multiple transmissions depending on the engine: 4-speed automatics for the 3.7L V6 and the 4.7L V8, and a 5-speed automatic for the 5.7L Hemi. To determine the exact unit on a specific vehicle, verify via VIN, transmission stamping, or official documentation.