The 47RE typically requires about 13 quarts of ATF for a full fill including the torque converter, with a practical range of 12–14 quarts depending on year and exact configuration.
The 47RE is a Mopar four-speed automatic transmission used in Dodge Ram trucks from the 1990s. When planning service, technicians differentiate between a complete system refill (which includes fluid in the torque converter and cooler lines) and a simple pan drain-and-fill. Variations in pan size, torque converter capacity, and cooler routing can shift the total amount you’ll end up adding.
ATF capacity scenarios
Below are typical ATF quantity ranges you might encounter, depending on how thorough the service is performed.
- Full transmission fill (drain pan, remove or account for torque converter, refill including the torque converter): roughly 12–14 quarts, with about 13 quarts being a common target.
- Pan drain and refill only (converter fluid remains in the torque converter and lines): about 8–11 quarts.
- Complete flush using a machine (circulates fluid through the system): typically 12–14 quarts, depending on equipment and vehicle.
Note: Actual capacity varies by year, model, torque converter size, and whether you replace the torque converter. Always verify with the service manual or a trusted technician before stocking up on fluid.
Factors that affect the quoted capacity
Model-year differences, torque converter size, and alterations to the cooler circuit all influence the total ATF needed. If you’re rebuilding or replacing components, consult the exact factory documentation for your vehicle to determine the precise fill requirement.
Why year and configuration matter
Some Dodge Ram 47RE transmissions had different pan capacities or converter sizes across production runs, which can shift the total fill requirement by a quart or so. Verifying the service manual for your specific year and configuration will yield the most accurate figure.
Maintenance tips for the 47RE
- Use the ATF specification recommended for your model year (commonly Dexron III/Mercon variants or Mopar ATF+4, depending on exact application).
- When performing a full service, plan for a converter-inclusive fill if you want the system fully replenished.
- After filling, cycle the transmission through the gears with the engine running and check the level according to the owner's manual procedures.
Summary: For a complete ATF fill on a 47RE, plan on approximately 13 quarts, typically within a 12–14 quart range. Pan-only changes will replace about 8–11 quarts, while machine-assisted flushes usually move around 12–14 quarts through the system. Always confirm with vehicle-specific guidelines for your exact year and configuration.
Summary
In short, the 47RE generally takes about 13 quarts of ATF for a full fill including the torque converter, but exact numbers vary by year and setup. Have roughly 12–14 quarts on hand and adjust based on whether you drain the converter, perform a flush, or follow a specific service manual for your vehicle.