Coolant Port Fitting Compatible With E90 E91 E92 E93 E82 E87 E60 E61 F10 F20 F22 F30 X3 E83 X1 X5 Z4 N52 N54 N55 N20(Red)

Billet aluminum coolant port fitting replacement for E90 E91 E92 E93 E82 E87 E60 E61 F10 F20 F22 F30 X3 E83 X1 X5 Z4 N52 N54 N55 N20 engines.The plastic cylinder head outlet adapter is prone to cracking and shearing at the barbed end due to repeated thermal cycling, resulting in coolant leaks.This upgraded fitting replaces the stock plastic component with a machined 6061 billet aluminum part.It features smooth internal contours to maintain uninterrupted coolant flow and a larger internal diameter compared to the part to enhance coolant volume and cooling efficiency.The fitting installs directly without modification using the existing mounting points and hardware.finish is anodized for corrosion resistance.Compatible with multiple OEM part numbers including 11537649409, 11537605152, 11537603514, 11537598234, 11537592095, 11537591889, 11537585023, 11537584549, 11537581063, 11537580969, 11537578727, 11537566329, 11537560363, 11537552339, 11537550062, 11537545890, 11537541992, and 11537603514.For N55 engines, use a thinner during installation.Replacement is 11537545278 (29x2.9 mm). Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.

• Designed specifically for vehicles including E90, E91, E92, E93, E82, E87, E60, E61, F10, F20, F22, F30, X1, X3, X5, and Z4 chassis
• Compatible with engines N52, N54, N55, and N20 for direct-fit installation without modification
• Replaces coolant port fittings to improve sealing integrity and reduce risk of coolant leaks
• Constructed from -grade aluminum with anodized finish for enhanced corrosion resistance and thermal stability
• Supports both OEM cooling system configurations and common aftermarket in naturally aspirated and turbocharged applications