#1156<\/strong><\/p>\n For sale is a used, original Bosch vacuum advance unit 1 237 121 607.<\/strong><\/p>\n The vacuum advance unit is intended for, among others, classic Porsche 911 and 911 S with 2.7-liter flat-six engines as well as certain Porsche 911 Carrera 3.0 models.<\/p>\n Original Bosch vacuum advance units are particularly interesting for the professional rebuild and authentic restoration of classic Porsche ignition distributors and classic cars.<\/p>\n The vacuum advance unit is part of the ignition timing adjustment and enables a load-dependent adjustment of the ignition timing. In the corresponding Porsche ignition systems, the adjustment mechanism in the ignition distributor is actuated via the applied vacuum.<\/p>\n Correctly functioning vacuum advance is important for maintaining the ignition curve specified by the manufacturer.<\/p>\n Porsche 911 2.7 (G-Model)<\/strong><\/p>\n Porsche 911 S 2.7 (G-Model)<\/strong><\/p>\n Porsche 911 Carrera 3.0<\/strong><\/p>\n Important:<\/strong> Vehicle assignment may vary depending on engine, year of construction, country version, and installed Bosch ignition distributor. The listed vehicle data does not constitute a general installation approval.<\/p>\n Please check the number of the existing component or ignition distributor before purchasing.<\/p>\n Please compare the Bosch part number 1 237 121 607<\/strong> or the Porsche cross-reference number 911 602 932 00<\/strong> with your existing component before purchasing.<\/p>\n Vacuum advance units from different Bosch ignition distributors can differ in terms of their mounting, adjustment characteristics, and vacuum curve. A visually similar version is therefore not necessarily interchangeable.<\/p>\n If you have any questions regarding compatibility or the item, we will be happy to assist you.<\/p>\nProduct Details<\/h3>\n
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Fitment and Application<\/h3>\n