Bosch Vacuum Advance Unit 1 237 122 757 – NOS Original Part | Porsche 924

Description

Original Bosch Vacuum Advance Unit 1 237 122 757 – NOS / New Old Stock

#1145

For sale is an original Bosch vacuum advance unit 1 237 122 757 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 and authentic restoration and rebuild of classic 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 contributes to optimal engine performance and ignition timing control tailored to operating conditions.

Product Details

• Manufacturer: Bosch
• Item: Vacuum advance unit / vacuum advance regulator
• Bosch part number: 1 237 122 757 / 1237122757
• Matching Bosch ignition distributor: 0 237 022 019
• Porsche part number of the ignition distributor: 477 905 203, 477905203
• Condition: NOS – New Old Stock (unused stock)
• Application: Vacuum-dependent ignition timing adjustment

Compatible Vehicles

Porsche 924 Coupé – 2.0

• Engine: 2.0 liter, 4-cylinder, naturally aspirated
• Model years: 1981–1985
• Version: USA / Canada
• Bosch ignition distributor: 0 237 022 019
• Porsche ignition distributor: 477 905 203

Vehicle assignment may vary depending on the year of manufacture 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 parts from older inventories.

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

Important note on item condition:

Due to age and storage for sometimes several 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 characteristics can occur despite the unused condition and are not uncommon for historic NOS spare parts.

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

Fitment and Application

Before purchasing, please compare the Bosch part number 1 237 122 757 and the number of your existing ignition distributor with the information listed above.

The vacuum advance units of 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 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.