Billet Aluminum Coolant Port Fitting Upgrade for BMW N52/ N54/ N55/ N20

Info:

• This upgraded hose fitting replaces the original weak OE plastic component, which is prone to cracking and leaking, with a durable aluminum version that eliminates those issues.
• Constructed from high-quality 6061 billet aluminum, it offers superior durability and resistance to wear compared to plastic.
• The internal design features smooth surfaces with no sharp edges, ensuring uninterrupted coolant flow.
• With a larger diameter than the OEM part, this fitting enhances coolant flow and overall cooling efficiency.
• Designed for a direct fit, it installs easily with no modifications required.
• Replaces part numbers： 11537649409, 11537605152, 11537603514, 11537598234, 11537592095, 11537591889, 11537585023, 11537584549, 11537581063, 11537580969, 11537578727, 11537566329, 11537560363, 11537552339, 11537550062, 11537545890, 11537541992，11 53 7 603 514

Fits:

BMW N20/N26/N51/N52/N54/N55

BMW 1 Series E81/E82/E87/E88 125i 128i 130i 135i 135is 1M 2008-2013
BMW 1 Series F20/F21 125i 2012-2015
BMW 1 Series F20/F21 M135i 2012-2016
BMW 2 Series F22/F23 220i 228i M235i 2014-2016
BMW 3 Series E90/E91/E92/E93 323i 325i 328i 330i 335i 2005-2012
BMW 3 Series F30/F31/F34 320i 328i 335i 2012-2015
BMW 4 Series F32/F33/F36 420i 428i 435i 2013-2016
BMW 5 Series E60/E61 523i 525i 528i 530i 535i 2005-2010
BMW 5 Series F10/F11 520i 523i 528i 530i 535i 2010-2016
BMW X1 Series E84 16i 20i 25i 28i 35i 2009-2015
BMW X3 Series E83 25i 30i 2006-2010
BMW X3 Series F25 20i 28i 35i 2011-2017
BMW X4 Series F26 20i 28i 35i M40i 2014-2018
BMW X5 Series E70 30i 35i 2007-2013
BMW X5 Series F15 35i 2013-2018
BMW X6 Series E71 35i 2008-2014
BMW X6 Series F16 35i 2015-2019
BMW Z4 Series E85/E86 25i 30i 2006-2008
BMW Z4 Series E89 18i 20i 23i 28i 30i 35i 2009-2016

Note：N55 engines need using a slightly thinner O ring to install. If a replacement o-ring is needed for future use please see p/n 11537545278（29x2.9mm）