The 2001 Dodge Ram 2500 offered multiple transmission options depending on engine and configuration. Most pickups used a four‑speed automatic (46RE or 47RE), while a five‑speed manual NV4500 was available on select builds.
The following guide explains the automatic and manual transmissions that were offered for the 2001 Ram 2500, and how they paired with different engines. It also notes how to identify which transmission your specific truck has based on documentation and markings.
Automatic transmissions
Below are the automatic options that were commonly installed in the 2001 Ram 2500, along with notes on the engines they typically paired with.
- 46RE — Four‑speed automatic with electronic controls (overdrive) used with the 5.9L Magnum V8 and, in some configurations, with the 8.0L V10.
- 47RE — Heavier‑duty four‑speed automatic with electronic controls; used behind larger engines in certain trims and for heavy‑duty duty, including some 8.0L V10 setups.
In practice, most 2001 Ram 2500s with a gasoline engine used one of these automatics, and diesel configurations often shared the same units depending on the exact build. For precise identification, check the vehicle’s build sheet or VIN-encoded specifications.
Manual transmissions
A five‑speed manual was available on select 2001 Ram 2500 configurations, typically paired with the 5.9L Magnum V8 and some diesel variants.
- NV4500 — Five‑speed manual with overdrive; used on various Ram 2500 configurations, especially those requiring robust towing and durability.
The six‑speed NV5600 manual was not offered in the 2001 model year and appeared in later years for certain configurations.
How to identify which transmission your truck has
To confirm the transmission in your specific 2001 Ram 2500, check the VIN/build sheet, the transmission stamp on the case, or the owner’s manual. Dealerships can decode the VIN to reveal the factory‑installed transmission or refer to the window sticker for exact specs.
Quick identification tips
Look for the transmission’s shape and the pan/bell housing design, and check for a small tag on the transmission itself. Automatic transmissions (46RE/47RE) will have a torque converter with a fluid fill, while a manual NV4500 will have a clutch pedal and a different gear shifter inside the cabin.
Summary
The 2001 Dodge Ram 2500 offered both automatic and manual transmissions. The most common automatics were the 46RE and 47RE four‑speed units, while a five‑speed NV4500 manual was available on select builds. Engine choice largely dictated which transmission appeared on a given truck, and buyers should verify their specific configuration via VIN/build sheet or documentation. For anyone researching a specific vehicle, checking the exact build data is the best way to confirm the original transmission.