The newly designed Black Market Parts replacement coolant flange!
Simply replace this part, and you will never worry again about plastic falling into your water pump or thermostat .
This billet aluminum part is anodized black with the BM-P logo laser etched into it for a clean look that is functional.
Fitting is located at the top of the cylinder head. The hose is referred to as the Cylinder Head to Thermostat Hose.
FITMENT: The water hose fitting fits 3.0L twin-turbo N54 (3.0-litre twin turbo) motors 335i, 335xi, 135i and the N53 (3.0-litre non-turbo) 2006 - 2010 325i, 330i, 525i, 525xi, 528i, 528xi, 530i, 530xi and the N20 (2.0-litre turbo) Z4 2013-, and the N52 X3;also fits the next generation N55 motors in all chassis.