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Volume: 2.5 quarts over stock, approximately, the amount over stock varies since there are at least two different stock pans and level check tubes
Dimensions:
Click here for dimensions.
,
PML pan is about 2 inches deeper than stock pan
Number of Bolts: 6
Design Changes Based On Prototype Installations (June 2024)
Our thanks to our prototype installers. Based on their feedback we are updating the design and making more pans. The updated design will have:
- Better access for fill/level check
- More clearance at front for frame on Sprinters
- Area for attaching cables on sides of pan
Sign Up For the PML 722.9 Transmission Pan Mailing List
Please sign up for our mail list so we know that you're interested in this pan. You will get updates about this project (like 2 or 3 emails per year).
Benefits
PML 722.9 pan has:
- Fins and extra capacity to keep fluid cooler
- Drain and magnetic drain plug for easy servicing
- Heavy duty, quality sand cast aluminum contruction for strength and a leak-free seal
- Boss for optional temperature sending unit
- Does not use formed gasket or retaining clips, custom cork gasket and new mounting bolts provided with pan
- Flat gasket sealing surface, thick flange, and custom PML gasket to eliminate warping and tweaking
Because of the flat gasket sealing surface, a PML custom cork composite gasket is provided with each pan. The PML pan will not work with the OEM gasket and the OEM pan will not work with a PML gasket. Additional PML 722.9/NAG2 gaskets are available.
The 722.9 NAG2 transmission is found in many Mercedes-Benz cars and vans and in 2012 and newer Sprinter vans. Configurations vary and other transmissions are possible. Verify transmission and space available for a larger pan before ordering.
2021 Sprinter
Mike installed a prototype of PML's 722.9 transmission pan on his View with a 2021 Sprinter 3500 Diesel 2WD chassis. Because of the tight space on the Sprinter, he needed to raise the transmission and move the exhaust to get the PML pan on. The front frame cross memeber is welded to the frame and could not be moved. He also removed the some material from the fins at the front of the pan. Once the pan was on, the transmission and exhaust were put back into place.
Mike compared the level check tube distance above the flange and did not use the PML level check tube since his pan had a level check at the same height as the flange.
Winnebago View, 2021 Sprinter Diesel 2WD
OEM 722.9/NAG2 pan
Mercedes E10 Bolt
level check tubes
front cross member distance to PML pan
PML pan installed
Click on image to view larger in a new tab or window.
2014 E63S AMG
Juan installed this PML 722.9, NAG2 transmission pan on his 2014 Mercedes-Benz E-Class AMG E 63 S-Model. He reported that the pan fit great.
2014 E63S AMG
removing the stock transmission pan
new filter installed
Installing PML 722.9 pan, front of pan
Installing PML 722.9 pan, passenger side view
installing PML 722.9 pan, driver side view
Click on image to view larger.
2007 ML500
Dan installed this PML pan on his 2007 Mercedes Benz ML500.
2007 ML500
OEM transmission pan
PML drain plug magnetic in PML pan
PML pan clears frame
PML pan installed
attaching heat shield bracket to PML pan
tools for putting in transmission oil
Putting fluid into PML pan
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Gasket
PML makes a custom cork composite gasket for this transmission pan. One gasket is included with each pan. Additional gaskets are available: PML NAG2/722.9 Gasket
PML NAG2/722.9 pans are not compatible with the OEM gasket. OEM pans are not compatible with PML gaskets.
Click on image to view larger.
PML designed the transmission pan with a thick and machined flat surface to maximized the sealing area. The PML pan will not tweak or deform. The thick flange and bolts maintain even pressure on the housing for a secure seal. Retaining clips used with the OEM pan can cause deforming and tweaking of the OEM pan leading to fluid leaks.
Included with PML Transmission Pan
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PML includes a custom gasket, brass fitting to raise the fluid level check above the flange, magnetic drain plug with copper sealing washer, new mounting bolts and washer and a button screw for attaching a bracket (if needed).
The PML pan does not use a retaining clip system to hold the gasket and pan on to the transmission housing. The retaining clip system can be difficult to use and people have reported that it warped the OEM pan, causing leaks. Using bolts on the thick flange on the PML pan improves sealing, minimizing leaks.
Fluid Level Check
The top of the level check on the PML pan should be the same as the top of the level check on the OEM pan. There are two OEM pans we know of. One has the level check at the same level as the flange and the other has a level check above the flange.
The PML pan includes a brass fitting so that the fluid level check can match the pan with the level check above the flange. The brass fitting is only used when the OEM pan has the level check above the flange. If the OEM pan has a level check at the same height as the flange, no fitting is needed.
First image shows the OEM pan that has the level check tube above the flange.
Second images shows its plastic level check tube.
Third image shows the PML pan and its brass fitting level check tube.
Note that The heights above the flange are the same for the level check tubes in the OEM pan and the PML pan.
Click on image to view larger.
Picture of OEM pan with a level check tube that does not go above the flange:
Click on image to view larger.
Filter
The PML 722.9 NAG2 transmission pan works with the OEM filter, including the new Smart Filter. The PML pan has supports cast into the bottom to hold the filter in place.
Click on image to view larger.
PML designed the pan so that the fluid dynamics of the transmission are not change. The fluid pickup and checking the fluid level are the same with the PML pan as with the OEM pan.
Drain, Fill/Level Check, Optional Temperature Sending Unit Locations
The drain and fill/level check are on the driver/left side of the transmission pan. On the passenger/right side of the pan, there is a threaded hole on a little tab for attaching a metal shield found on many vehicles.
This PML transmission pan has two possible locations for an aftermarket temperature sending unit. One is on the passenger side and one is on the driver side. These bosses are unmachined. Optionally, PML can drill and tap one of the bosses. There is a custom machining charge for this service. The default size is 1/8 NPT. Verify the thread specification of your temperature sending unit and contact us if a different size is needed. Select this option when ordering. This would be for an aftermarket temperature gage.
Driver side view, top down view and passenger side view of this PML pan.
Click on image to view larger.
Shield
Many 722.9 NAG2 transmissions have a small shield attached to the right front corner.
In this picture, the shield is circled in red.
Click on image to view larger.
The PML pan works with this shield. The shield attaches to the PML pan at the tab on the front passenger/right side corner of the PML pan. This tab has a threaded hole and a screw is included for attaching the shield to the PML pan.
Picture is of 2011 Mercedes Benz GL550 OEM transmission pan.
Transmission and OEM and PML Transmission Pans
The 722.9 transmission pan and gasket attached to the transmission with a retaining clip and bolt. The retaining clip system can warp the pan and lead to leaks. The PML pan has a flat flange mating surface and cork gasket and bolts on without the clips.
Picture 1: filter on transmission
Picture 2: OEM pan on transmission
Picture 3: OEM retaining clip and bolt
Picture 4: PML pan on transmission
Click on image to view larger.
The inside of the pan has a fluid level check tube. This functionality is duplicated in the PML pan.
PML Transmission Pan Compared to Stock
There are two different OEM stock pans for the 722.9 NAG2 transmission. Here are pictures of the PML pan compared to both.
Click on image to view larger.
First image: comparision of pan depths
Second image: top down view of PML and OEM pans
Second image: top down view of PML and OEM pans
Third image: inside of PML and OEM pans with gaskets on flanges
Fourth image: inside of PML and OEM pans without gaskets
