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NAG1/722.6 transmission

722.6, NAG1, W5A580, WA580, W5A380, W5J400 Transmissions

At left, NAG1/722.6 transmission with the filter installed.

The 722.6/NAG1 is a 5 speed transmission. Chrysler makes the NAG1 and Mercedes makes the 722.6. They are basically the same except for the torque converters. The W5A580, W5A380, and W5J400 are in the family of 722.6/NAG1 transmissions. The W5A580 is also called WA580 when people drop the first 5 from the name.

Although these transmissions may have slightly different internals, the external part, where the transmission housing connects to the stock pan, is the same. So when you are looking for a heavy duty after market transmission fluid pan, you need to first make sure you have a NAG1/722.6 transmission and then look to see how much space you have around the stock pan for a larger, heavy duty replacement pan.

PML makes three pans for the NAG1/722.6 transmission. This video gives an overview of the pans. Continue reading this page for more information.

Does My Vehicle Have a NAG1/722.6 Transmission?

The vehicle specifications should list the transmission. A dealer can usually tell with the VIN number. The shape of the stock transmission pan can also identify the transmission.

The stock pan for the NAG1/722.6 looks like these:
NAG1/722.6 transmission on a Magnum    NAG1/722.6 transmission on a Grand Cherokee Diesel

The stock pan has 6 retaining clips around the edge to hold it to the transmission.

Sometimes the pan is partial under the exhaust or frame cross members or covered by an underbody plate.

Does My Vehicle Have Space for a Larger Transmission Pan?

Measure how much space is between the stock pan and the frame, exhaust, or other parts of the vehicle. Also check the ground clearance. The transmission pan should not be the lowest thing.

It can be a hassle to check, but it's important so you know which pan will work for you. Take a ruler and a cell phone or camera to snap some pictures when you check for clearance.

Which PML Pan Do I Need?

PML makes three pans for the NAG1/722.6 transmission. All are heavy duty, sand cast aluminum with raised fins on the bottom. They are all larger than the stock pan. General guidelines:

List of Vehicles with the NAG1/722.6 Transmission

This is a partial list of vehicles that usually have the NAG1/722.6 transmission. Configurations vary. Some years are transition years. Always check your vehicle to confirm transmission and clearance available.

  • Jeep Commander, V6 3.7L, 2006 to 2011
  • Jeep Grand Cherokee SRT–8, 2006 to 2013
  • Jeep Grand Cherokee Laredo, V6 3.7L 3.6L, 2006 to 2013
  • Jeep Grand Cherokee Limited and Overland, V6 3.6L, 2012 to 2013
  • Jeep Grand Cherokee, V6 3.0L Diesel, 2007 to 2011
  • Jeep Wrangler, gas engines, 2011 to 2014
  • Dodge Nitro, V6 4.0L, 2007 to 2011
  • Dodge Magnum SRT–8, some SXT, R/T, 2007 to 2011
  • Dodge Charger SRT 8, 2006-2013
  • Dodge Challenger, V8, 2009 to 2013 and V6 in 2011
  • Chrysler 300, 300C with 5 speed transmissions, 2005 to 2012
  • Chrysler Crossfire, 2004 to 2007
  • Jaguar XJ and XKR Supercharged, 1998 to 2003
  • Mercedes C55 AMG, CLS55 AMG, E55 AMG, G55 AMG, ML430, S65 AMG and others
  • Sprinter Vans, 2004 to 2012 (Dodge, Mercedes, Freightliner)

Comparison of PML NAG1/722.6 Pans

PML makes three pans for the NAG1/722.6 transmission. All three pans feature:

  • Heavy duty, cast aluminum construction
  • Finned
  • Drain plug on side of pan

Height and capacity differences:

  • Stock Pan: 1.6 inches, stock capacity
  • PML Stock Capacity Pan, P/N 11132: 2.13 inches, stock capacity
  • PML Deep Pan, P/N 11117: 3.3 inches, 1 1/2 quarts over stock
  • PML Deep Middle Pan, P/N 11124: 4.1 inches, 2 quarts over stock

PML stock capacity pan for NAG1, 722.6   PML deep pan for NAG1, 722.6   PML deep middle pan for NAG1, 722.6