Get your Bosch K-Jetronic warm up regulator repaired with 6 months warranty! Our workshop offers a reliable and quick reconditioning service with 30 years of experience. We have successfully overhauled hundreds of warm up regulators so far.

Your warm up regulator will be checked, disassembled, cleaned, and adjusted in every temperature ranges. You will get a fully operational warm up regulator back. We will repair your item within 24 hrs. 

How to tell if a WUR is broken? I don't find my number on the list, what can I do? Click here! 

We can rebuild your unit no matter if it is from a Mercedes, a VW, a Ferrari, a Porsche, a Saab or a Volvo, but please make sure your Bosch WUR part number is on the list below: 

0 438 140 004    0438140004
0 438 140 005    0438140005
0 438 140 011    0438140011
0 438 140 013    0438140013
0 438 140 014    0438140014
0 438 140 020    0438140020
0 438 140 026    0438140026
0 438 140 032    0438140032
0 438 140 048    0438140048
0 438 140 049    0438140049
0 438 140 051    0438140051
0 438 140 052    0438140052
0 438 140 055    0438140055
0 438 140 058    0438140058
0 438 140 064    0438140064
0 438 140 065    0438140065
0 438 140 071    0438140071
0 438 140 072    0438140072
0 438 140 073    0438140073
0 438 140 074    0438140074
0 438 140 084    0438140084
0 438 140 088    0438140088
0 438 140 093    0438140093
0 438 140 096    0438140096
0 438 140 097    0438140097
0 438 140 099    0438140099
0 438 140 100    0438140100
0 438 140 111    0438140111
0 438 140 114    0438140114
0 438 140 118    0438140118
0 438 140 119    0438140119
0 438 140 128    0438140128
0 438 140 129    0438140129
0 438 140 132    0438140132
0 438 140 136    0438140136
0 438 140 146    0438140146
0 438 140 157    0438140157

Mending your Bosch K-Jetronic warm up regulator costs 219 Euro, you can pay that amount safely by money transfer or with PayPal. We will take over the postage if you live inside EU. Please note, that if you live outside the EU, additional costs may occur.

Please send your item and your contact addresses to: 

BMS Motordiagnosztika 
2030 Erd Rozsa u. 5. 
HUNGARY 

If you have any quesions, you can contact us by This email address is being protected from spambots. You need JavaScript enabled to view it. or by phone: +36305988006

If you don't find your WUR number on the list, you have a warm up regulator equipped with additional pressure corrections. The diaphragms of this additional cells can not be rapaired, as there is no good quality spare part available. However, the correction cells only alter the control pressure in a small scale, so if you accept that the cells may not be mended, our repair service will help you considerably. 

Like by a new item, warranty void if fuel contamination causes wrong operation after rebuild. 
If you have any quesions or want to send your unit, you can contact us by This email address is being protected from spambots. You need JavaScript enabled to view it.

BmS Motordiagnosztika 

2030 Erd Rozsa u. 5. 

HUNGARY 

e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. 

Phone: +36305988006