Designed by Vargas Turbo Technologies, this fitting eliminates the need for "make-shift" solutions, offering a high-grade finish for high-performance builds.
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BMW G26 M440i xDrive B58 3.0L Engine Cooling Parts
- Bleeder Screw
- Block Off Plate
- Coolant
- Coolant Flanges
- Expansion Tank
- Fan
- Hoses
- Lines
- Oil Cooler
- Performance
- Radiator
- Temperature Sensor
- Thermostat
- Tools
- Water Pump
Replacement plastic coolant reservoir for the low temp circuit that cools your intercooler
For LCI models only
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-19-2026
Dress up your engine bay with new coolant expansion tank caps
For model years up to 2023
Thermostat controlled by the ECU for precise temperature control.
For vehicles with the early B58C or B58D TU engine - Will not fit the B58N TU2 engine
Whether you’re under the hood for a weekend project or keeping a high-performance engine in peak shape, the last thing you want to worry about is a brittle cooling system. That’s where the Rein Automotive Expansion Tank
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