Bosch Vacuum Advance Unit 1 237 122 829 – NOS original part | Mercedes-Benz 380 SL / SLC

Description

Original Bosch vacuum advance unit 1 237 122 829 – NOS / New Old Stock

#1150

For sale is an original Bosch vacuum advance unit 1 237 122 829 from old stock (NOS – New Old Stock).

This vacuum advance unit is an unused original spare part from earlier Bosch production.

Original Bosch vacuum advance units are particularly interesting for the professional rebuild and authentic restoration of classic Mercedes-Benz ignition distributors and classic cars.

The vacuum advance unit is part of the ignition timing adjustment and enables a load-dependent adjustment of the ignition timing. The adjustment mechanism in the ignition distributor is actuated via the applied vacuum.

A correctly functioning vacuum advance is important for maintaining the ignition curve intended by the manufacturer.

Product Details

• Manufacturer: Bosch
• Item: Vacuum advance unit
• Bosch part number: 1 237 122 829 / 1237122829
• Matching Bosch ignition distributor: 0 237 405 021
• Mercedes-Benz number of the ignition distributor: A 003 158 02 01
• Condition: NOS – New Old Stock (unused warehouse stock)
• Use: Vacuum-dependent ignition timing adjustment
• Application: Classic Mercedes-Benz V8 ignition systems

Matching Vehicles

Mercedes-Benz 380 SL (R107)

• Engine: M116, 3.8 liter, V8
• Model year: 1981
• Version: USA
• Bosch ignition distributor: 0 237 405 021

Mercedes-Benz 380 SLC (C107)

• Engine: M116, 3.8 liter, V8
• Model year: 1981
• Version: USA
• Bosch ignition distributor: 0 237 405 021

Vehicle assignment may vary depending on the year of manufacture, engine, and country version. Please check the number of the installed Bosch ignition distributor before purchasing.

NOS – Original spare part from old stock

NOS stands for New Old Stock and refers to unused original spare parts from earlier production.

Original Bosch spare parts from older stock are particularly interesting for the authentic restoration of historical ignition systems.

Important note on item condition:

Due to age and storage, sometimes for decades, both the original packaging, if available, and the item itself may show signs of storage and aging. These include, for example, dust, light scratches, discoloration, or superficial signs of corrosion.

These features can occur despite the unused condition and are not unusual for historical NOS spare parts.

Please note the product images and the information on the respective item condition.

Fitment and Use

Before purchasing, please compare the Bosch part number 1 237 122 829 and the number of your existing ignition distributor with the information listed above.

Vacuum advance units for 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.

If you have any questions regarding compatibility or the item, we will be happy to assist you.

Radspieler Classic – Your specialist for classic Bosch spare parts, classic car technology, and professional ignition distributor rebuilds.