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:
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:
Frame or exhaust right under pan or little ground clearance:
See PML stock capacity pan, part number 11132.
This is common with Wranglers, some Mercedes cars, Jeeps with large aftermarket exhausts.
Frame or exhaust close to rear end of the stock pan, some ground clearance:
See PML deep pan, part number 11117.
This is common with Grand Cherokee, Magnum, Charger, some Mercedes cars and SUVs.
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