BMW Aluminum Cylinder-Head to Thermostat Coolant Hose Mickey Mouse Flange | 1 2 3 4 5 6 7 Series, X1 X3 X4 X5 X6, Z4 & M2 | N20 N26 N51 N52 N54 N55 | Replaces 11537545278

Upgrade your BMW’s reliability with the BAVMODS Aluminum Thermostat-to-Cylinder Head Hose Fitting, designed as a premium replacement for the fragile factory fitting. This small but powerful component ensures long-lasting performance, keeping your engine running smoothly and leak-free.

Key Features:

• Premium Metal Construction: Built to withstand heat and pressure.
• OEM-Grade O-Ring (Part No. 11537545278): Ensures a perfect, leak-proof fit.
• Includes Both Style O-Rings: Includes the N54/N55 O-Ring, as well as the N51/N52 O-Ring — you get both!
• Enhanced Reliability: Eliminates common coolant leaks for worry-free driving.
• Simple Installation: Hassle-free, direct-fit design.

Upgrade today and enjoy peace of mind for miles to come with this essential improvement to your BMW’s cooling system!

INCLUDES: Upgraded metal Mickey Mouse flange + O-rings for both N52/N51 (28i) and N54/N55 (35i) engines. This is the only solution on the market that comes with BOTH O-rings, so there’s no guesswork and it fits flush. The N54/N55 use the thicker O-rings, while the thinner O-ring—already pre-installed on the flange—is for the N51/N52. You get both included!

FITMENT: BMW Models Equipped with N20 / N26 / N51 / N52 / N54 / N55 Engines (OE 11537545278)

• E82 Coupe / E88 Convertible (2008–2013) including: 128i (N51 / N52), 135i (N54 / N55), 135is (N55), 1 Series M Coupe (N54)
• F22 Coupe / F23 Convertible (2014–2016) including: 228i / 228i xDrive (N20 / N26), M235i / M235i xDrive (N55)
• E90 Sedan / E91 Touring / E92 Coupe / E93 Convertible (2006–2013) including: 325i / 325xi (N52), 328i / 328xi / 328i xDrive (N51 / N52), 330i / 330xi (N52), 335i / 335xi / 335i xDrive (N54 / N55), 335is (N54)
• F30 Sedan / F31 Touring / F34 Gran Turismo (2013–2016) including: 320i / 320i xDrive (N20), 328i / 328i xDrive / 328i GT xDrive (N20 / N26), 335i / 335i xDrive / 335i GT xDrive (N55), ActiveHybrid 3 (N55)
• F32 Coupe / F33 Convertible / F36 Gran Coupe (2014–2016) including: 428i / 428i xDrive / 428i Gran Coupe / 428i xDrive Gran Coupe (N20 / N26), 435i / 435i xDrive / 435i Gran Coupe / 435i xDrive Gran Coupe (N55)
• E60 Sedan / E61 Touring (2006–2010) including: 525i / 525xi (N52), 528i / 528xi (N52), 530i / 530xi (N52), 535i / 535xi (N54)
• F10 Sedan / F11 Touring / F07 Gran Turismo (2010–2017) including: 528i / 528i xDrive (N20 / N52), 535i / 535i xDrive (N54 / N55), 535i GT / 535i GT xDrive (N55), ActiveHybrid 5 (N55)
• F06 Gran Coupe / F12 Convertible / F13 Coupe (2012–2018) including: 640i / 640i xDrive / 640i Gran Coupe / 640i xDrive Gran Coupe (N55)
• F01 / F02 Sedan (2011–2015) including: 740i / 740Li (N54 / N55), ActiveHybrid 7 (N55)
• E84 X1 (2013–2015) including: sDrive28i / xDrive28i (N20), xDrive35i (N55)
• E83 X3 (2007–2010) including: 3.0si / xDrive30i (N52)
• F25 X3 (2011–2017) including: sDrive28i / xDrive28i (N20 / N52), xDrive35i (N55)
• F26 X4 (2015–2018) including: xDrive28i (N20), xDrive35i / M40i (N55)
• E70 / F15 X5 (2007–2017) including: 3.0si / xDrive30i (N52), xDrive35i / sDrive35i (N55)
• E71 / F16 X6 (2008–2019) including: xDrive35i / sDrive35i (N54 / N55)
• E85 Roadster / E86 Coupe (2006–2008) including: 3.0i / 3.0si (N52)
• E89 Roadster (2009–2016) including: sDrive28i (N20), sDrive30i (N52), sDrive35i / sDrive35is (N54)
• F87 M2 Coupe (2016–2018) including: M2 (N55)

Important Notes

• Compatible with vehicles using OE coolant hose flange 11537545278
• Engine compatibility includes N20, N26, N51, N52, N54, and N55 applications listed above
• Fitment should always be verified by OE part number and vehicle configuration before purchase

BAVMODS Part No: BAV000004F

Please refer to the “Fitment” section in the product description for compatibility details.