The 5.9 Magnum (360 cubic inches) does not have one fixed transmission. Depending on the year and the Dodge model, it was paired with several different transmissions over its production life.
In practice, most 5.9 Magnum-equipped trucks from the 1990s into the early 2000s used four‑speed automatic transmissions, with a few earlier configurations offering a three‑speed unit and rare cases featuring a manual option. The exact pairing varies by generation, trim, and market, so identifying the specific transmission requires knowing the vehicle year and model.
Common transmissions seen with the 5.9 Magnum
Before listing the typical options, note that transmission availability shifts by year and model. The following are the most commonly encountered automatics and the occasional manual that accompanied a 5.9 Magnum in Dodge Ram trucks.
- 46RH and 46RE — four‑speed automatic transmissions used on early to mid‑1990s Rams with the 5.9; the 46RE introduced electronic controls and a lockup converter in later years.
- 47RE — a stronger, electronically controlled four‑speed automatic used on some late‑1990s to early‑2000s Ram 2500/3500 configurations with the 5.9.
- 48RE — a heavier‑duty four‑speed automatic introduced in the early 2000s for Ram 2500/3500 with the 5.9, designed for higher torque and towing capacity.
- A727 (TorqueFlite) — a three‑speed automatic found on some of the earliest 5.9 setups in older Rams before the four‑speed automatics became standard.
- A833 — a five‑speed manual transmission used on some very early, limited configurations; not common on later gasoline‑powered Rams.
Concluding paragraph: For most late‑90s and early‑2000s Dodge Rams with the 5.9 Magnum, you’ll encounter 46RE/47RE/48RE automatics. Older or niche builds may show the 727 three‑speed or, very rarely, a manual, but those are not the norm for typical production trucks.
How to verify your vehicle’s exact transmission
To determine the precise transmission in your 5.9 Magnum‑powered vehicle, check the vehicle identification data: the factory build sheet, the transmission code on the dipstick or bellhousing area, or your VIN lookup. Cross‑reference the code with Mopar documentation or trusted online resources for your specific year and model. If you’re buying used, ask for maintenance records or have the transmission ID confirmed by a shop.
Notes by model year (high level)
Here’s a broad snapshot of how the pairings evolved in Dodge Ram trucks with the 5.9 over time, keeping in mind that there are regional and trim variations:
- Early to mid‑1990s: transition from three‑speed automatics toward four‑speed units; 46RH/46RE becoming more common.
- Late 1990s: increasing use of 46RE and the introduction of the 47RE for higher‑output models.
- Early 2000s: the 48RE appears on heavier 2500/3500 configurations with the 5.9 for improved durability and towing.
Concluding paragraph: Because transmission choice depends on the exact year, model, and market, always verify the installed unit on the vehicle itself rather than assuming from the engine alone. If you share the year, model, and drivetrain, I can help pinpoint the most likely transmission with greater accuracy.
Summary: The 5.9 Magnum engine doesn’t have a single fixed transmission. Most commonly, Dodge used four‑speed automatics (46RE, 47RE, 48RE) in late‑90s to early‑2000s Rams, with older 46RH/727 configurations and rare manual options appearing in specific, earlier builds. Always verify the exact transmission by checking the factory codes for your vehicle.