The 47RE transmission fluid capacity is a critical service specification for Dodge and Ram trucks equipped with this electronically controlled automatic transmission. The 47RE is based on the durable 727 TorqueFlite design and was commonly used in Dodge Ram trucks from the mid-1990s to the early 2000s, especially with the 5.9L Cummins diesel and V8 gasoline engines.
Correct fluid capacity and fluid type are essential for smooth shifting, proper cooling, and long transmission life.
47RE Transmission Fluid Capacity
The 47RE transmission fluid capacity is approximately 5–6 quarts for a standard pan drop and filter change, while a complete dry fill, including the torque converter and cooler lines, requires about 14–17 quarts, depending on torque converter size and cooling setup.
The recommended fluid is ATF+4, which is fully synthetic and backward-compatible with ATF+3, and the fluid level should always be checked with the engine running, the transmission fully warmed up, and the shifter cycled through all gears to ensure proper operation, cooling, smooth shifting, and long transmission life.
For a complete dry refill, such as after a rebuild or full system drain, the total fluid capacity is approximately 14 to 17 quarts. The exact amount can vary based on torque converter size, transmission cooler setup, and whether the vehicle has auxiliary coolers. Diesel-equipped trucks often require more fluid due to larger converters and added cooling capacity.
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Best Recommended Transmission Fluid for 47RE
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1. Genuine Mopar ATF+4 Automatic Transmission Fluid
Features:
- OEM-approved fluid designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles requiring ATF+4.
- Maintains smooth shifting and proper transmission function as per factory specifications.
- Available in individual quarts or multi-quart packs for full service intervals.
2. Valvoline ATF 4 Full Synthetic Automatic Transmission Fluid
Features:
- Full synthetic formula offering enhanced thermal stability and protection against oxidation and wear.
- Maintains seal elasticity and prevents leaks with advanced conditioners.
- Meets or exceeds ATF+4 specifications and is compatible with many Chrysler and Ram transmissions.
3. TRiAX ATF XT Full Synthetic for ATF+4 Applications
Features:
- Full synthetic fluid built for ATF+4 applications, compatible with Chrysler, Jeep, and Dodge transmissions.
- Provides longer fluid life and stable performance over a wide temperature range.
- Available in larger containers, ideal for complete drain and refill services.
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47RE Transmission Overview
The 47RE is a four-speed automatic transmission with electronic governor pressure control. It is known for its strength and towing capability, but it relies heavily on proper fluid levels to function correctly. Automatic transmission fluid in the 47RE acts as a lubricant, hydraulic fluid, and coolant, making accurate fluid capacity especially important for both daily driving and heavy-duty use.
How to Check 47RE Transmission Fluid Level
Checking the fluid level correctly is just as important as knowing the proper 47RE transmission fluid capacity. The engine must be running, and the transmission should be fully warmed to operating temperature. Cycle the gear selector through all gears, then leave it in Park or Neutral. The dipstick should read within the “HOT” range. Add fluid in small amounts, as even one extra quart can cause overfilling issues.
Effects of Low or Overfilled Fluid
Low transmission fluid can lead to delayed engagement, slipping gears, erratic shifting, overheating, and premature clutch wear. Overfilling the 47RE transmission can cause the fluid to foam, leading to pressure loss, inconsistent shifting, and increased operating temperatures. Maintaining the correct fluid level ensures proper hydraulic pressure and smooth transmission operation.
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Service Intervals and Maintenance
Regular maintenance is essential for protecting the 47RE transmission. Most service recommendations suggest changing the fluid and filter every 30,000 to 60,000 miles, depending on driving conditions. Vehicles used for towing, hauling, or operating in hot climates should be serviced closer to the 30,000-mile interval. Inspecting the transmission pan during service can reveal early signs of internal wear.
Transmission Cooling and Fluid Capacity
The 47RE transmission fluid capacity directly affects cooling efficiency. Automatic transmission fluid helps transfer heat away from internal components. Insufficient fluid reduces cooling capability and can lead to overheating, which is one of the leading causes of transmission failure, especially in towing applications.
Upgraded Transmission Pans
Many owners install deeper aftermarket transmission pans to increase the effective fluid capacity by 1 to 3 additional quarts. These pans often include cooling fins and drain plugs, improving heat dissipation and making fluid changes easier. While not required, they are beneficial for heavy-duty or high-performance use.
Final words
The 47RE transmission fluid capacity is approximately 5–6 quarts for a pan drop service and 14–17 quarts for a complete dry fill. Using ATF+4, maintaining the correct fluid level, and following proper service intervals are key to ensuring long-term reliability. Paying attention to fluid capacity and condition helps prevent overheating, improve shift quality, and extend the life of the 47RE transmission in Dodge and Ram trucks.
