The genuine BMW part number 61311367659 is a specialized control unit relay designated for the Intensive Cleaning System (often labeled as Steuergerät Intensivreinigung in German). This system was a factory option on vintage BMWs that used a separate, secondary reservoir containing a concentrated cleaning concentrate to blast heavy road grime off the windshield and headlights.
6 Series (E24 Chassis)
- 1978–1984 BMW 633CSi
- 1985 BMW 635CSi (early production only)
7 Series (E23 Chassis)
(Note: Depending on global market regions and production months, it may also occasionally cross-reference with select European-spec E12 or E28 5-Series configurations fitted with the optional headlight wash/wipe or intensive cleaning bundle.)