Rein EPT0014 Engine Coolant Reservoir - Front or Left

OE Quality Expansion Tank for BMW and Mini

The Rein EPT0014 engine coolant reservoir is an OE-quality expansion tank built for direct replacement on select BMW i3, BMW i8, and Mini Cooper applications. It is made from virgin plastic to help resist heat-cycle cracking and maintain stable coolant system performance over time.

Compatible With 2007-2015 Mini Cooper, 2011-2016 Mini Cooper Countryman, 2013-2016 Mini Cooper Paceman, 2014-2021 BMW i3, 2018-2021 BMW i3s, 2014-2017 BMW i8, and 2019-2020 BMW i8. Rein EPT0014 is engineered to match OE materials and fitment requirements for a straightforward replacement.

Key Features

• Produced from virgin plastic meeting or exceeding OE material specifications
• Resists cracking and wear caused by repeated heat cycles
• Direct-fit design supports easier installation
• Built to strict engineering standards for materials and tolerances
• OE-quality expansion tank for coolant reservoir replacement service

Detailed Description

Rein EPT0014 is an engine coolant reservoir designed as an OE-style replacement for the factory expansion tank. The construction uses virgin plastic with no regrind, which helps improve durability and reduce the risk of premature cracking from thermal cycling. For BMW i3, BMW i8, and Mini Cooper cooling system service, this reservoir is built to install and function in line with original equipment expectations.

This part cross-references Genuine 17137823626 and 17137539267 for the same application. The Rein EPT0014 expansion tank is a practical choice when replacing a worn or damaged coolant reservoir on the listed BMW and Mini models.

Common Problems This Part Can Address

• Coolant loss from a cracked expansion tank
• Visible plastic fatigue around the reservoir body
• Cooling system leaks caused by heat-cycle damage
• Reservoir replacement after age-related deterioration
• Fitment issues from a damaged OE coolant tank

Installation Notes and Tips

Verify vehicle application by year, make, model, and reservoir position before installation. Inspect the cooling system for related wear, including hoses, caps, and seals, so the new reservoir is not installed into a system with unresolved leaks. Confirm the replacement matches the original mounting and connection points on the vehicle.

Quality Assurance

Rein manufactures this expansion tank to OE-quality material and tolerance standards, using virgin plastic to support long service life and consistent fitment. Part number EPT0014 is built for dependable cooling system service on the specified BMW and Mini applications.