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.
This oil pipe hose runs from the VANOS adjusting unit to the oil filter housing. At some point the rubber line shrinks or cracks and oil can weep out of the swage fittings. The fittings at the banjo bolts can also leak so replacing the seals for each banjo fitting is strongly recommended. This item fits the following BMWs: 1993-1995 E36 BMW 325i 325is 325ic M3 3.0 1993-1995 E34 BMW 525i
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