Billet Aluminum Coolant Port Fitting Upgrade for BMW

Metal Coolant Port Fitting Upgrade for BMW This heavy-duty billet aluminum fitting is a metal direct replacement for the weak plastic factory coolant fitting which is prone to cracking and failure over time especially during disassembly.  The factory plastic part heats and cools thousands of times and eventually becomes brittle and will crack and fail. Just a matter of time.  Applications • N54 3.0L twin-turbo motors 135i, 335i, 335ix, and 1M • N52/N53 (3.0L non-turbo motors) • 2006 - 2010 325i, 330i, 525i, 525ix, 528i, 528ix, 530i, 530ix / N52 X3 / N20 (2.0L turbo) Z4 2013 & up Replaces OEM part numbers 11537649409, 11537605152, 11537603514, 11537598234, 11537592095, 11537591889, 11537585023, 11537584549, 11537581063, 11537580969, 11537578727, 11537566329, 11537560363, 11537552339, 11537550062, 11537545890, 11537541992 What's included (1) Billet Aluminum Coolant Port Flange Fitting (1) Heavy-duty o-ring (1) Stainless steel hose clamp  Vehicle Fitment 2011 BMW 1 Ser