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BMW S50B32 VANOS adjuster unit seal kit

We offer a complete seal kit / repair kit for the VANOS adjuster unit in S50B32 engines used in BMW 3 series and Z3 models. 


If your engine is equipped with a VANOS adjuster unit (variable valve timing system), you might experience the following symptoms:

- loss of torque and power especially in the lower and middle RPM range
- uneven power and rpm distribution
- louder and uneven idle
- difficult takeoffs
- increased fuel consumption


This is most likely caused by faulty seals inside the VANOS adjuster unit, which are not able to withstand the high oil pressure anymore that is used to control the variable valve timing system.

Here you have option to purchase high-quality replacement seals and to save a lot of money compared to the purchase of a new VANOS adjuster unit. All o-rings are made out of heat and wear resistant FPM/FKM (Fluoroelastomer, comparable to Viton®) and the PTFE seals contain special additives to increase their compressive strength, wear resistance and dimensional stability. FPM has better mechanical properties than standard o-ring materials such as NBR and a far greater temperature resistance (from -20°C/-4°F to +204°C/+400°F). The PTFE seals are CNC-milled to our specifications within tolerance class DIN ISO 2768-1-f (fine) in Germany to ensure a high level of accuracy.

This seal kit fits BMW VANOS adjuster units with the following part number(s): 11361404022 / 11 36 1 404 022, 11361404701 / 11 36 1 404 701


Attention: The solenoid valve grooves in S50B32 engines are not properly designed for the use of o-rings. CNC machined seals with a unique u-profile that are specifically made for these grooves need to be installed instead. These seals for the solenoid valves are not included in this seal kit and need to be purchased separately (product number MPJ10020 in our online shop).

Attention: After the installation of our seals, in some models the engine control unit might take some time until it realises that the responsiveness of the VANOS adjuster unit has changed and adjusts itself.
Vehicle compatibility list:

BMW 3 series E36 M3 3.2 1995/09-1998/02 3201 ccm, 236 KW, 321 HP
BMW 3 series Cabriolet E36 M3 3.2 1995/10-1999/04 3201 ccm, 236 KW, 321 HP
BMW 3 series Coupe E36 M3 3.2 1995/10-1999/04 3201 ccm, 236 KW, 321 HP
BMW Z3 E36 M 3.2 1997/03-2001/06 3201 ccm, 236 KW, 321 HP
BMW Z3 E36 M 3.2 2001/06-2003/01 3246 ccm, 239 KW, 325 HP
BMW Z3 Coupe E36 M 1998/02-2001/06 3201 ccm, 236 KW, 321 HP
BMW Z3 Coupe E36 M 2001/06-2003/06 3246 ccm, 239 KW, 325 HP