Mercedes 722.9 Transmission Valve Body 2006-2018

Mercedes 722.9 Transmission Valve Body (2006–2018)

The Mercedes 722.9 transmission valve body controls hydraulic pressure and gear changes in vehicles equipped with the 722.9 7G-Tronic automatic transmission from 2006 through 2018. This unit directs transmission fluid through precision-machined channels, allowing smooth clutch engagement and accurate shift timing. Because the 7G-Tronic system relies on advanced electronic and hydraulic coordination, the valve body plays a central role in overall transmission performance.

Over time, worn solenoids, internal valve wear, or fluid contamination can cause harsh shifting, slipping, delayed engagement, or limp mode activation. Replacing the valve body restores proper hydraulic control and improves shift quality. In addition, confirming that your vehicle uses the 722.9 transmission ensures proper compatibility, since Mercedes also produced earlier 722.6 units and later 9-speed variants. You can verify the transmission model by checking the VIN data or the identification plate on the transmission housing.

This 722.9 valve body assembly works best when installed alongside fresh transmission fluid, filters, and updated conductor plates if required. For example, pairing it with a complete service kit helps maintain stable line pressure and long-term durability. Customers can also explore related components on our site, including 722.9 conductor plates, solenoid kits, and rebuild components, to complete a full repair.

Here is the list of other 722.9 parts that we have in stock!
722.9 Transmission Parts

Vehicle Compatibility

Mercedes-Benz Applications

• C-Class (C300, C350): 2008–2014

• E-Class (E350, E550): 2007–2016

• S-Class (S550): 2007–2013

• ML / GLE-Class: 2006–2018

• GL-Class: 2007–2016

• CLS-Class: 2007–2014

• SLK-Class: 2009–2016

Fitment Notes

This valve body fits Mercedes 722.9 7G-Tronic transmissions only. Always confirm the transmission model, engine type, and production year before purchase. Proper verification ensures smooth shifting, correct hydraulic operation, and reliable long-term performance.

Also, consult official Mercedes-Benz service documentation for installation procedures and coding requirements.

Here is a diagram of the 722.9 Transmission!
722.9 Transmission Diagram