Genuine Mercedes Hatch Hydraulic Cylinder

A power liftgate or tailgate on a Mercedes-Benz depends on a pair of components that rarely get attention until they fail: the hatch cylinders that lift and hold the gate. Genuine Mercedes hatch hydraulic cylinders are the original-equipment solution for restoring that function, built to the same specifications as the parts installed at the factory.

What a Hatch Hydraulic Cylinder Does on a Mercedes-Benz

Liftgate supports are pressurized cylinders designed to hold up a liftgate or rear hatch. On many Mercedes-Benz SUVs, wagons and crossovers, these cylinders work alongside a powered opening system, so the gate rises smoothly, stops where it should and stays open while you load cargo. Over time, they can lose pressure, often because of extreme temperatures, dust or contaminants. Cold weather in particular can reduce internal gas pressure, which is why a hatch that once stayed open can begin drifting downward on a chilly morning.

Why Choose Genuine Mercedes for This Part

Hatch supports look simple, but the correct part depends on the model, body style and equipment. A power-hatch version differs from a manual one, and left and right supports are not always interchangeable. Genuine Mercedes parts are specified by OE part number, which takes the guesswork out of matching the cylinder to your vehicle. Mercedes-Benz describes its Genuine Parts as specially developed, tested and approved for Mercedes-Benz vehicles, with an accuracy of fit that makes installation quick and easy.

Examples of genuine hatch and liftgate supports include:

• A2049802864, a hatch lift support listed for the GLK350 with a power hatch/liftgate
• A1668900000, a liftgate support for the ML350 with the automatic hatch option (codes 890 and/or 122)
• A1669803664, a rear lift cylinder in the 166-series family

Always confirm the part number against your vehicle's equipment codes before ordering, since fitment can vary by year, model, trim and package.

Signs It May Be Time to Replace Your Hatch Cylinder

• The liftgate will not stay open, or slowly sinks after opening
• The power opening feels slow, uneven or strained
• Visible fluid residue, corrosion or a damaged rod on the cylinder
• Noise or jerky movement as the gate travels

Because the gate on a larger vehicle is heavy, a weak support is both an inconvenience and a safety concern. Replacing cylinders as a matched pair is generally good practice so the gate lifts evenly.

Explore More

To see everything the manufacturer offers, visit the Genuine Mercedes brand page. For a wider look at lift supports and hydraulic components from multiple manufacturers, browse the full Hatch Hydraulic Cylinder category.