Rein Coolant Return Line - BMW F22/23 M240i, F30/31/34 340i, F32/33/36 440i

Product Details

Keep your BMW’s B58 engine running cool and efficiently with the Rein CHT0964B Turbocharger Coolant Hose. Over time, the intense heat of the turbocharger environment can cause factory coolant lines to become brittle and leak. Rein’s innovative solution provides a high-quality replacement hose specifically for these demanding conditions. By focusing on the exact section of the line prone to failure, this part ensures you aren't paying for components you don't need. It is a precision-engineered component that maintains the integrity of your BMW's cooling system while offering significant savings over the dealership alternative.

Key Features

• High-quality construction meets or exceeds original equipment standards.

• Specifically optimized for BMW 3, 4, 5, 6, 7 Series, and X-models with the 3.0L engine.

• Resists coolant additives and high-temperature degradation.

• Simplifies maintenance by focusing on the specific failure point of the turbocharger return system.

• Restores reliable coolant flow to protect the turbocharger from overheating.

Specifications

• Brand: Rein Automotive

• Product Category: Cooling / Turbocharger Hoses

• Vehicle Fitment: BMW 340i, 440i, 540i, 740i, X3/X4 M40i (B58 Engines)

• OE Interchange: 11-53-8-666-857

• Application: Turbocharger Coolant Return Line

• Release Date: January 2026

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