Greetings Members,

after doing much reading about Bosch CIS and tampering with the WUR on my 1980 450SL, I have learned a great deal and was able to get my car to run, albeit not smoothly.. I have decided to buy a reconditioned WUR that will at least be calibarated to the manufacturers specs.. After calling BOSCH America, and giving the part # 438 140 068, Bosch confirmed that it is discontinued and that a 0438 140 148 is a later replacement which is also discontinued. It looks like I might be able to secure a 0438 140 148. I have a question for any of you who can confirm if it will work before spending the money, it is non refundable. All the warm up pressures are within .02 bar of the 438 140 068.
The new Bosch part number is F 026 TX2092092
I learned that pressure is everything on BOSCH CIS.
Much obliged. Marty.
martykelly2@gmail.com