Rein EPT0259 Engine Coolant Reservoir - Intercooler

OE-Style Intercooler Reservoir

Rein EPT0259 is an engine coolant reservoir for the intercooler circuit, built for BMW applications that need a direct-fit replacement tank. It is molded from virgin plastic in black to match OE material standards and help resist cracking from repeated heat cycles.

• Engine coolant reservoir for the intercooler system
• Plastic construction in black
• Twist-on cap design
• No cap included
• No mounting hardware or brackets included
• OE-quality replacement from Rein

Fitment Details

Compatible with BMW 230i, 230i xDrive, M240i, M240i xDrive, 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe, 440i, 440i Gran Coupe, 440i xDrive, 440i xDrive Gran Coupe, 330i GT xDrive, 330i xDrive, 340i GT xDrive, 330i, 340i, and 340i xDrive applications. Fits 2017-2021 BMW 230i, intercooler; 2017-2021 BMW 230i xDrive, intercooler; 2017-2021 BMW M240i, intercooler; 2017-2021 BMW M240i xDrive, intercooler; 2017-2020 BMW 430i, intercooler; 2017-2020 BMW 430i Gran Coupe, intercooler; 2017-2020 BMW 430i xDrive, intercooler; 2017-2020 BMW 430i xDrive Gran Coupe, intercooler; 2017-2020 BMW 440i, intercooler; 2017-2020 BMW 440i Gran Coupe, intercooler; 2017-2020 BMW 440i xDrive, intercooler; 2017-2020 BMW 440i xDrive Gran Coupe, intercooler; 2017-2019 BMW 330i GT xDrive, intercooler; 2017-2019 BMW 330i xDrive, intercooler; 2017-2019 BMW 340i GT xDrive, intercooler; 2017-2018 BMW 330i, intercooler; 2016-2018 BMW 340i, intercooler; and 2016-2018 BMW 340i xDrive, intercooler.

What This Reservoir Helps Address

• Cracked or brittle intercooler coolant tank housing
• Coolant loss from a damaged expansion tank
• Heat-cycle fatigue in aging plastic reservoirs
• Fitment issues from a worn OE-style tank
• Service replacement for BMW intercooler cooling systems

Installation Notes

Verify the vehicle uses the intercooler reservoir configuration listed above before installation. This part uses a twist-on cap design, but the cap is not included, and mounting hardware or brackets are not included. Transfer or source any required related components as needed for the repair.

Quality Assurance

Rein designs this expansion tank to meet OE-style fit, form, and function expectations. The virgin plastic construction is selected to match or exceed original material standards and reduce the risk of cracking associated with repeated thermal cycling. This part cross-references BMW 17138617045 for the same application.