Upgraded Viton Seal Kits & High Tensile Bolts 
The solenoids seals are one of the biggest causes of vanos malfunction and rough running.

By fitting one of our seal kits you are eliminating the chance of the seals failing again.

The main problem with the O.E seals is the material they are made from. Nitrile rubber is not as hardwearing as Viton and cannot withstand high temperature for long periods of time.

Viton is well known for its excellent (400F/200C) heat resistance. Viton offers excellent resistance to aggressive fuels, chemicals and oils.

Another major issue is the bolts that BMW supply are not strong enough to contain the pressure that vanos unit can generate. We supply you with 12.9 high tensile bolts instead of the 8.8 that BMW use.