Water Hose Fitting Fits BMW N20 Z4 N52 X3 N53 325i 330i 525i 525xi 528i 528xi 530i 530xi N54 335i 335xi 135i Engine Replace 11537541992 11537544638

Feature: The OEM hose fitting is a known weak spot in the coolant system as it commonly cracks and leaks Our upgraded water hose fitting is to replace the stock fitting with aluminum design that will never wear-out, crack or leak Our Water Hose Fitting is made from high strength aerospace aluminum, Grade 6061 T6511.It was designed to maximize the resistance to breakage There are no sharp corners on Our Water Hose Fitting so that the coolant will not be disrupted as it passes through Our aluminum fitting has a larger diameter than the OEM part , the coolant flow path through the center of the fitting is optimized to maximize coolant flow Reference OE Part Number: This product is an OEM replacement for the plastic fitting on BMW PN 11537541992 and 11537544638 Fits the following vehicles: N52 X3 N20 (2.0L turbo) Z4 2013 & up N54 (3.0L twin-turbo) motors 335i, 335xi, 135i. N53 (3.0L non-turbo) 2006 - 2010 325i, 330i, 525i, 525xi, 528i, 528xi, 530i, 530xi. This Water Hose fitting also fits the next generation N55 motors in all chassis