Improper VANOS function will cause reduced power and poor fuel economy. The VANOS system is BMWs version of variable valve timing and can be found on the intake and or exhaust camshafts. The system uses a pair of electrically actuated solenoids that direct the flow of pressurized oil to the VANOS gears. Depending on engine requirements the VANOS system can advance or retard timing as requested by the ECU.
The VANOS camshaft adjuster bolt is a single-use item that needs to be replaced any time it is removed. This replacement OEM Rein bolt is the perfect option to get your VANOS system reassembled and your BMW back on the road.
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