This fitting also fits generation N55 motors in all chassis. This hose runs from the coolant thermostat housing to the front of the . This fitting is a direct replacement for the stock plastic fitting with no modification to any part of the system necessary. Simply remove of the hose from the plastic fitting and then the fitting from the . Then install the replacement fitting to the and slide the hose and hose clamp over the fitting. If you track or race your 335i then this is a highly advisable upgrade as this coolant fitting not crack under high-temperature track conditions. Replaces part number:1153754199 Fit for: N54 3.0L twin-turbo motors 335i, 335xi, 135i. N53 (3.0L non-turbo) 2006 - 2010 325i, 330i, 525i, 525xi, 528i, 528xi, 530i, 530xi.N52 X3.N20 (2.0L turbo) Z4 2013 & up colour:black Material:aluminum Package Contents: 1 * Water pipe connector 1 * Clamp Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.