12-29-2011, 03:30 AM
Join Date: Aug 2005
My Ride: 2001 330i
| It's better to use automotive O-rings as they are rated for higher temps than the generic O-rings at Lowe's / Home Depot for general plumbing use.
The Lower Radiator Hose Aux Fan Temp Sensor o-ring is BMW p/n 13621743299
It's the same O-ring used for the IAT (Intake Air Temperature) sensor located in the intake manifold.
Autohausaz sells it for $1.27 USD
RealOEM refers to the O-ring as #4