#1147<\/strong><\/p>\n For sale is an original Bosch Vacuum Advance Unit 1 237 122 639 from old stock (NOS \u2013 New Old Stock)<\/strong>.<\/p>\n This vacuum advance unit is an unused original spare part from earlier Bosch production. Original Bosch vacuum advance units are particularly valuable for the professional and authentic restoration and rebuild of classic ignition distributors and classic cars.<\/p>\n The vacuum advance unit is part of the ignition timing adjustment system and enables load-dependent adjustment of the ignition timing. The applied vacuum actuates the adjustment mechanism within the ignition distributor.<\/p>\n A correctly functioning vacuum advance system contributes to optimal engine performance and ignition timing control adapted to operating conditions.<\/p>\n 0 237 302 002:<\/p>\n Mercedes-Benz 123 Sedan (W123) 280 E (123.033) \/ <\/strong><\/span>M 110.988, M 110.984 \/ <\/span>02.1976 – 11.1985 \/ <\/span>136 kW \/ 185 HP \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Mercedes-Benz S-Class (W116) 280 SE, SEL (116.024, 116.025) \/ <\/strong><\/span>M 110.985 \/ <\/span>08.1972 – 07.1980 \/ <\/span>130 kW \/ 177 HP \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Mercedes-Benz S-Class (W116) 280 SE, SEL (116.024, 116.025) \/ <\/strong><\/span>M 110.983, M 110.985 \/ <\/span>08.1972 – 07.1980 \/ <\/span>136 kW \/ 185 HP \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Mercedes-Benz SL (R107) 280 (107.042) \/ <\/strong><\/span>M 110.982, M 110.986, M 110.990 \/ <\/span>06.1976 – 09.1981 \/ <\/span>130 kW \/ 177 PS \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Mercedes-Benz S-Class (W116) 280 SE, SEL (116.024, 116.025) \/ <\/strong><\/span>M 110.985 \/ <\/span>08.1972 – 07.1980 \/ <\/span>130 kW \/ 177 HP \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Mercedes-Benz SL (R107) 280 (107.042) \/ <\/strong><\/span>M 110.982, M 110.986, M 110.990 \/ <\/span>06.1976 – 09.1981 \/ <\/span>130 kW \/ 177 PS \/ <\/span>2746 ccm \/ <\/span>6 \/ <\/span>Gasoline<\/span><\/p>\n Vehicle assignment may vary depending on the year of manufacture and country version. Please check the part number of the installed Bosch ignition distributor before purchasing.<\/p>\n NOS stands for New Old Stock<\/em> and refers to unused original parts from older inventories.<\/p>\n Especially for authentic restoration of historic ignition systems, original Bosch spare parts from earlier production are particularly valuable.<\/p>\n Important Note on Item Condition:<\/strong><\/p>\n Due to age and storage, sometimes for decades, both the original packaging (if present) and the item itself may show signs of storage and aging. These include, for example, dust, light scratches, discoloration, or superficial corrosion.<\/p>\n These characteristics can occur despite the unused condition and are not uncommon for historic NOS spare parts.<\/p>\n Please refer to the product images and the information on the respective item condition.<\/p>\n Before purchasing, please compare the Bosch part number 1 237 122 639<\/strong> and the number of your existing ignition distributor with the specifications listed above.<\/p>\n The vacuum advance units of different Bosch ignition distributors can vary in terms of their mounting, adjustment characteristics, and vacuum curve. An optically similar design is therefore not necessarily interchangeable.<\/p>\n If you have any questions about compatibility or the item, we will be happy to assist you.<\/p>\nProduct Details<\/h3>\n
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Compatible Vehicles<\/h3>\n
NOS \u2013 Original Spare Part from Old Stock<\/h3>\n
Fitment and Use<\/h3>\n