Replacement transmission oil pan for the Mercedes 725.0 9G-Tronic, part A7252703707, for a cracked or leaking pan on 2015-2019 C, E, GLC and S models.
If your Mercedes has a wet spot under the transmission, a pan that took a hit from road debris or a jack, or a drain plug boss that will not hold torque anymore, this is the replacement oil pan for the 725.0 nine-speed automatic Mercedes calls 9G-Tronic. It replaces factory part A 725 270 37 07 and covers most 2015-2019 rear-drive and 4MATIC models that got the nine-speed, from the C300 and GLC300 through the E-Class, S-Class, SL and SLC.
On the 9G-Tronic the pan is more than a cover. It is the fluid reservoir the pump draws from, it carries the drain and fill provisions, and it seals against the bottom of the case under the valve body. Mercedes made it a lightweight composite part instead of stamped steel, which saves weight but means a crack or a damaged plug boss cannot be welded or tapped back to factory condition. A damaged pan is a replace-only item. There is also no dipstick on this transmission, so a slow leak can go unnoticed until the fluid level is low enough to affect shifting.
Clean the underside of the transmission, drive the car to temperature and look again. ATF that starts at the pan rail or a plug points to the pan or its seal. Fluid running down from higher up, such as the electrical connector, cooler lines or the bell housing, means the pan is only catching a leak from somewhere else. If the car has been shifting poorly, check the fluid level with a scan tool before assuming internal damage. One trap: the 725.0 is not the same transmission as the seven-speed 722.9, and parts and fluid do not cross. Our 722.9 identification guide explains how to tell them apart, and the 722.9 problems guide covers the older seven-speed if that turns out to be what you have.
Listed fitment: C300 and C43 AMG (2017-2018), CLS400 (2017), CLS550 (2015-2018), E300 (2017-2019), E400 and E43 AMG (2017-2018), GLC300 (2016-2019), GLC43 AMG (2017-2018), GLE43 AMG (2017-2019), GLE450 AMG (2016), GLS450 and GLS550 (2017-2018), S450 (2018-2019), S550 and Maybach S550 (2017), S560 (2018-2019), SL450 and SL550 (2017-2019), SLC300 and SLC43 AMG (2017-2019) and SLK300 (2016). It does not fit the GLC350e plug-in hybrid. The pan also cross-references A7252708704, A7252708804, A7252700408, A7252703114, A7252703203 and A7252709110. Mercedes changed parts within model years, so compare the number on your old pan or send us your year and VIN before ordering. More Mercedes transmission parts are in our Mercedes automatic collection.
Plan on a full fluid change with the pan job. The old ATF is already out, and fresh 236.17 fluid on a clean pan is the best start for the new part.
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Yes, the GLC300 from 2016 to 2019 is on the listed fitment. The GLC350e plug-in hybrid is the exception and is not covered. Compare the part number on your old pan or send us your VIN if you want it checked.
Use an ATF that meets MB 236.17. Early 725.0 documentation called for MB 236.16, which 236.17 has replaced. Seven-speed 722.9 fluids are not interchangeable with it.
Not reliably. Plastic welds and epoxy do not hold up to heat cycling under the car, and a damaged plug boss cannot be retapped like an aluminum pan. Replacement is the correct repair.
The level is set through the fill port with an adapter, with the transmission at the specified temperature as read on a scan tool. Doing it at the wrong temperature gives a false level.
Use a new pan seal and fresh MB 236.17 fluid. If you do not already own the fill adapters, get them before you drain the transmission, since the car cannot be refilled without them.
