Keeps your various running the way it should — this ELRING part restores the original function of a worn or failed Air Compressor Seal ELRING OE Ref, built to OEM reference 1783811 rather than a generic approximation.
ELRING identifies it as 908.690, EAN: 4041248795248. Match that against OEM 1783811 or your old part before fitting, particularly if your vehicle's had any running changes across its production years.
Confirmed for selected various vehicles. Use the vehicle registration lookup tool if you're not certain, or browse Suspension for other options.