722.6 Transmission Service Kit Mercedes Sprinter 8L ATF

If your Sprinter 2500 or 3500 is shuddering on the highway, flaring between gears or slow to pick up Drive on a cold morning, and nobody can tell you when the transmission fluid was last changed, start here. This kit is the full parts list for a 722.6 five-speed fluid and filter service on a 2010-2018 Mercedes Sprinter: eight 1-liter bottles of red MB 236.14 ATF made in Germany, a transmission filter, the pan gasket, six pan bolts, the drain plug sealing washer, a torque converter drain plug and the filler cap lock pin.

What the fluid does in a Sprinter 722.6

In the 722.6 the fluid is the hydraulic medium the valve body uses to apply every clutch and brake, the coolant for the torque converter, and the lubricant for the gearsets. A loaded van that tows, idles at job sites or runs stop-and-go delivery routes puts more heat into that fluid than a passenger car does. As it ages its friction properties change, and the transmission control unit is still shifting as if the fluid were new. Mercedes specifies 236.14 fluid for the 722.6 and has published a bulletin warning against mixing 236.14 with 236.15 or 236.16 oils, so the bottles in this kit are the correct red spec, not the blue fluid used in later seven-speeds.

Symptoms of worn-out fluid

• Shudder or vibration when the converter clutch applies at steady highway speed
• Flare on the 2-3 shift, or a soft, slipping upshift under load
• Delayed engagement into Drive or Reverse when the van is cold
• Dark, burnt-smelling fluid on the drain plug or in the pan
• ATF wicking out of the transmission connector at the side of the case

How to confirm it is fluid and not hardware

Scan the van before you spend money. The 722.6 is known for conductor plate and speed sensor failures and for valve body bore wear, and none of those are cured by fresh fluid. If codes are stored or the van drops into limp mode, read 722.6 common problems and fixes first. If the connector is wet, our 722.6 fluid leak guide covers the connector O-rings and the harness check. When the codes are clean and the fluid is simply old or dark, this service is the right move. For quantities by variant and the full level-check procedure, see 722.6 fluid type and capacity.

Fitment

Listed for the Mercedes Sprinter 2500 and 3500, 2010-2018, with the 722.6 (NAG1) five-speed automatic. Some later vans in that span were built with the seven-speed 722.9, which uses a different filter and fills from the pan, so check the transmission before ordering: a 722.6 has a filler tube in the engine bay closed by a cap and lock pin. Filter part numbers can also differ between production runs. Match the filter and pan to the parts you remove, or send us the year and VIN and we will confirm. Other 722.6 parts are on the 722 transmission parts page.

Service notes

• Drain hot, drop the pan, and replace the filter in the same step. Then turn the engine by hand until the torque converter drain plug lines up with the bellhousing access hole and drain the converter too. Skipping the converter leaves a large share of old fluid in the unit.
• Fit the new pan gasket and run the six bolts down evenly in a cross pattern to the specified torque. Use the new drain plug washer and the new converter drain plug.
• The 722.6 has no factory dipstick. Remove the lock pin and cap from the filler tube, pour in about 5 liters before starting, then start the engine, run through the gears and add the rest.
• Set the level with the van level on its wheels using a 722.6 dipstick tool, reading the 25 C or 80 C range that matches the fluid temperature. Install the new lock pin when you are done.
• If the connector is leaking, do the 722.6 conductor plate, filter and gasket kit during the same pan drop. To get more old fluid out of the cooler, the 722.6/722.9 ATF drain and fill kit helps.

Will this fit my 2015 Sprinter?

It is listed for 2010-2018 Sprinter 2500 and 3500 vans with the 722.6 five-speed. Some later vans use the 722.9 seven-speed instead. If your van has a capped filler tube in the engine bay it is a 722.6. Send us your year and VIN if you are unsure.

Is 8 liters enough?

Yes for a pan drop with the filter change and converter drain on a typical 722.6. Factory capacities vary by variant, so check the level carefully at the end rather than pouring in every bottle.

Can I use the blue 236.15 fluid instead?

No. The 722.6 takes red 236.14 fluid, and Mercedes warns against mixing 236.14, 236.15 and 236.16 oils. The bottles in this kit are 236.14.

Why does the kit include a lock pin?

The filler tube cap is secured by a lock pin that has to be broken off to open it. A new pin is needed to close the tube after the level check, and it is one of the parts most often forgotten.

Will a fluid change fix my shudder or limp mode?

Shudder from old fluid often improves. Limp mode with stored codes usually points to the conductor plate, speed sensors or valve body, which fluid will not repair. Scan the van first.

Do I need to reset anything after the service?

Shift adaptations can take some driving to settle after fresh fluid. If shift quality is poor after a correct fill and level check, a scan tool adaptation reset is the next step.

• 722.6 Fluid Type and Capacity: MB 236.14 Spec, Fill Amounts and the Factory Level Check
• 722.6 Fluid Change Cost
• 722.6 Fluid Leak: Common Spots and Fixes
• 722.9 Fluid Change Cost