OPENED Original SINGLE-Vacuum WUR with Overhaul Kit Included

This tester is a "must have" if you want to work on and troubleshoot the fuel injection system on your 30-year older gas fuel injected Mercedes engine. Let's face it.  Thirty years is old, but 55 years is ancient. You can not fix the system if you don't know what it is doing!

You will find the quality of this kit is impressive and it has things in it that other kits do not have. No instructions included, but you can find instructions online if you search for them. WARNING.

This WUR is very simple in design and has no internal diaphrams. It is also quite short compared to the other types. No instructions are included, but they are readily available on the internet by doing some google searches.

Before you make this modification, you should be very familiar with the function of the WUR and how its pressure adjustments affect the performance of the K-Jetronic fuel injection systems. The tools and supplies offered in this kit will allow you to modify your warm-up regulator at home and in y

This is a sealed WUR as it was removed from the engine. It has not been tested, but it is complete. It is the early style with NO vacuum connection. An overhaul kit is included as shown. No instructions included, but can be found online. How important is this? Watch the video below.

This WUR has been opened up and inspected internally.  It has not been tested. There may be some hardware missing, so you would need your WUR to complete an overhaul. No instructions included, but can be found online. How important is this? Watch the video below.