Bosch Classic overview of warm-up controllers

The warm-up regulator, also known as steering pressure regulator mentioned, is an important component of the K-Jetronic injection system. With a cold engine, the warm-up controller reduces the control pressure, causing more fuel to be metered through the fuel distributor.

The warm-up controller is heated by the motor and is also equipped with electric heating.

Various warm-up controllers

Many different warm-up controllers have been used for K-Jetronic injection systems. Which version is correct depends, among other things, on the vehicle, the engine version, and the production period.

Warm-up controllers can look very similar externally, while their applications differ. It is therefore important to determine the correct part number when replacing one and not just look at the appearance of the part.

Bosch Classic overview

In the original Bosch Classic overview of warm-up controllers You can look up which warm-up controller belongs to a vehicle and version.

The document contains, among other things:

  1. vehicle make and model
  2. engine power
  3. cylinder capacity
  4. production period
  5. corresponding Bosch number
  6. Bosch replacement and overhaul information
  7. Cross-lists from original part numbers to Bosch numbers

Extensive applications for various classic Mercedes models have also been included.

Finding the right warm-up controller

Use the Bosch Classic overview to determine the correct part number for your car. When doing so, check not only the model, but also the engine version and production period.

Please note! The vehicle manufacturer's numbering is always leading and may differ from the Bosch list.

Next, compare the found number with the number of the installed warm-up controller. Please note that older numbers may have been replaced over the years by a different Bosch number or a revised version.

Bosch Classic PDF warm-up controllers

For all part numbers and applications, please consult the original Bosch Classic document.

Bosch Classic overview of warm-up controllers

View the original Bosch Classic overview for comprehensive information on warm-up controllers, vehicle applications, production periods, Bosch part numbers, and replacement data.


View Bosch Classic overview of warm-up controllers