The pressure regulator – also known as an electro-hydraulic actuator or EHA – ensures correct regulation of the fuel pressure at the flow divider of various Mercedes engines with KE-Jetronic from the W201, W124, R129 series and more.
Over the years, defects or leaks occur which can be remedied by replacing with a new Bosch part. The new part is preferable to a used part, as used parts often develop the same leaks due to storage.
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