Repair kit. Suitable for almost all Bosch 4-cylinder gray cast iron flow dividers (both adjustable and non-adjustable, for new and old system pressure regulators):

0438100003 0438100005 0438100007 0438100018 0438100021 0438100023 0438100030 0438100032 0438100039 0438100053 0438100058 04 38100059 0438100061 0438100064 0438100065 0438100073 0438100074 0438100075 0438100078 0438100079 0438100082 0438100083 043810 0100 0438100101 0438100113 0438100116 0438100140 0438100150 0438100160

Depending on the respective model, individual sealing rings included are not required. 

Spring stainless steel membrane made in Germany, all sealing rings made of expensive FPM/FKM: Other sealing sets often contain sealing rings made of NBR or even silicone. These become leaky after a short time due to the high aromatic content in modern premium fuels.

In addition to the stainless steel membrane and Allen sealing rings and copper sealing rings, the following parts are also included: Copper sealing rings (Made in Germany) for mounting the injection lines, adjusting washers for the various system pressure regulator types, housing screws, mounting screws for mounting on the air flow meter, a dismantling screw for removing the plug-in gasoline filters in the injection ports, two dismantling screws for opening the housing halves and Citric acid granules for cleaning all fine filters.

The instructions are so detailed that repairs are possible even for laypeople! The instructions will be sent to you as a PDF via email.

If there are any questions or ambiguities during installation, adjustment or calibration, we will be happy to help by telephone.


Repair kit. Suitable for nearly all Bosch 4-Cylinder Cast Iron Fuel Distributors (adjustable as well as non-adjustable, for new and old type system-pressure-regulators): 

0438100003 0438100005 0438100007 0438100018 0438100021 0438100023 0438100030 0438100032 0438100039 0438100053 0438100058 04 38100059 0438100061 0438100064 0438100065 0438100073 0438100074 0438100075 0438100078 0438100079 0438100082 0438100083 043810 0100 0438100101 0438100113 0438100116 0438100140 0438100150 0438100160

Depending on your model, some included parts may not be needed.

Stainless-spring-steel-membrane from German production, all sealing rings made from expensive FPM/FKM: The sealing rings in other repair kits are often made from NBR or even silicon. These O-rings do not resist modern super-fuel for more than a few years before they become leaky.

Besides the membrane and all sealing-rings and copper washers the following parts are as well included:

New copper washers (made in Germany) for mounting the injection-fuel-lines, shims for adjusting the different types of system-pressure-regulators, housing-screws, mounting screws for mounting the Fuel Distributor to the airflow housing, a disassembly-screw for removing the small injection-line fuel filters, two disassembly screws for opening the housing halves and citric acid granulate for cleaning all fine fuel filters.

Delivery with a very detailed step-by-step repair instruction (in English), illustrated with more than 80 pictures! The repair instruction is so detailed that a repair can be done by a layman! The instruction will be sent to you via email as a PDF file.

If you need help or have further questions during assembly, we can also advise you by phone.


In addition to the stainless steel membrane and Allen sealing rings and copper sealing rings, the following parts are also included: Copper sealing rings (Made in Germany) for mounting the injection lines, adjusting washers for the various system pressure regulator types, housing screws, mounting screws for mounting on the air flow meter, a dismantling screw for removing the plug-in gasoline filters in the injection ports, two dismantling screws for opening the housing halves and Citric acid granules for cleaning all fine filters. New copper washers (made in Germany) for mounting the injection-fuel-lines, shims for adjusting the different types of system-pressure-regulators, housing-screws, mounting screws for mounting the Fuel Distributor to the airflow housing, a disassembly-screw for re