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003 997 06 89 – Mercedes-Benz Connector Coupling
Description
003 997 06 89 – Mercedes-Benz Connector Coupling
This technical sealing ring is a high-pressure for the Mercedes-Benz air conditioning system, it is constructed from green Hydrogenated Nitrile Butadiene Rubber (HNBR), which provides superior resistance to temperature extremes and chemical breakdown from R134a/R1234yf refrigerants and PAG/POE oils.
It ensures a leak-proof seal at critical junctions such as the interface of the expansion valve, condenser, or receiver drier to prevent system depressurization.
Compatibility:
This part is used extensively across Mercedes-Benz models including:
- C-Class (W202, W203, W204) 1994-2015,
- E-Class (W124, W210, W211, W212) 1993-2016,
- S-Class (W140, W220, W221) 1992-2013,
- SL-Class (R129, R230) 1993-2012,
- SLK-Class (R170, R171) 1998-2011,
- ML-Class (W163, W164) 1998-2011, and
- Sprinter (2500, 3500) 2002-2020.

















