A very common failure point on the S85 engine. The Vanos high pressure oil line feeds oil from the Vanos pump in the oil pan up to the Vanos units. The original oil line will eventually leak inside the engine causing loss of oil pressure in the Vanos system.
It's vital to replace the stock oil line and rebuild the vanos oil pump when doing any bottom end work.
- Includes 2 new crush washers.
This is a genuine BMW replacement oil line