Bosch Vacuum Advance Unit 1 237 122 613 – NOS Original Part | Mercedes-Benz

Description

Original Bosch Vacuum Advance Unit 1 237 122 613 – NOS / New Old Stock

#1151

For sale is an original Bosch Vacuum Advance Unit 1 237 122 613 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 system and enables vacuum-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 manufacturer’s specified ignition map and contributes to smooth engine operation.

Product Details

• Manufacturer: Bosch
• Item: Vacuum Advance Unit / Vacuum Adjuster
• Bosch Part Number: 1 237 122 613 / 1237122613
• Mercedes-Benz Reference Number: A 000 158 39 18, A 0001583918
• Ignition Distributor: 0 237 405 001, 0237405001, 0 237 405 006, 0237405006
• Condition: NOS – New Old Stock (unused warehouse stock)
• Application: Vacuum-dependent ignition timing adjustment
• Area of Application: Classic Mercedes-Benz Ignition Systems

Vehicle Assignment

The Bosch Vacuum Advance Unit 1 237 122 613 is assigned to Mercedes-Benz spare part number A 000 158 39 18.

For this Mercedes-Benz part number, application notes exist for the Mercedes-Benz 450 SL (R107) with M117 V8 engine, among others.

Since different vacuum advance units were installed depending on the engine, year of manufacture, engine number, and country version, the exact compatibility must be checked before purchase.

NOS – Original Spare Part from Old Stock

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

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

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 corrosion marks.

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

Fitment and Application

Before purchasing, please compare the Bosch part number 1 237 122 613 or the Mercedes-Benz reference number A 000 158 39 18 with your existing component.

Vacuum advance units for different Bosch ignition distributors can differ in terms of their mounting, adjustment characteristics, and vacuum curve. A visually similar design is therefore not necessarily interchangeable.

If you have 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.