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N55 Engine
VANOS Solenoid Valves
The non-return valve with screen filter used on the N54 engine have now been integrat-
ed in the VANOS solenoid valves on the N55 engine. This measure has made it possible
to reduce the number of oil ducts in the cylinder head. The screen filters on the VANOS
solenoid valve ensure trouble-free operation and reliably prevent the VANOS solenoid
valve from sticking due to dirt particles.
Cam Sensor Wheels
The sensor wheels are now “deep-drawn” sheet metal components and no longer made
from two parts. This design increases production accuracy while reducing manufacturing
costs.
N55, camshaft sensor wheel
Index Explanation
A
Rear View
B
Front view