Mercedes-Benz A0009899103 Central Hydraulic Oil

Description

The part number A0009899103 is an original equipment (OEM) hydraulic fluid/hydraulic oil used by Mercedes-Benz. According to multiple listings:

• It’s listed as “Hydraulic oil, central hydraulic oil” under OE number A000 989 91 03 for Mercedes-Benz and Smart vehicles. Spareto+2Autodoc+2

• It is described in one listing with the colour: yellow. Autodoc+1

• Specified under applications such as the hydraulic system (and sometimes as “ZH-M” system reference) used in Mercedes-Benz vehicles. Autodoc+1

• It is used where a specific hydraulic or auxiliary fluid is required—not exactly typical ATF (automatic transmission fluid) but rather central hydraulic oil (e.g., for convertible tops, steering systems, or other hydraulic circuits). Spareto+1

Important Notes / Usage:

• When you see “yellow” fluid for Mercedes-Benz, verify the exact system (hydraulic, steering, convertible top, etc.), because filling the wrong fluid can cause damage.

• This part number is not necessarily a generic ATF for transmission; it’s listed as “central hydraulic oil” in catalogs.

• Ensure you use the correct capacity and system specification listed in the vehicle’s service manual.

• Replacement or refill should follow the maker’s instructions including bleed, flush if required, correct level measurement and use of genuine or correctly specified fluid.