YzusGomumu Engine Radiator Coolant Overflow Reservoir Tank with Cap — BMW i3/i8 and Mini Cooper Compatible (OE 17137539267 / 603-332)
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Description
xOverview
The YzusGomumu Engine Radiator Coolant Overflow Reservoir Tank with Cap supports your vehicle's cooling system by capturing excess coolant during heat cycles and returning it as needed. This helps keep the cooling circuit organized and responsive to temperature changes, reducing the risk of coolant loss and helping you maintain steady performance through everyday trips and longer drives.
Why it matters
A dedicated space for overflow, a secure seal with the included cap, and a rugged build designed for the engine bay work together to provide a practical upgrade. While this reservoir is not a guarantee of performance, it can be a handy addition for vehicles sharing water-cooling layouts across multiple models, offering a tidy substitute for aging components.
Compatibility at a glance
- 2014–2019 BMW i3 and i3s
- 2014–2019 BMW i8
- 2007–2015 Mini Cooper
- 2011–2016 Mini Cooper Countryman
- 2013–2016 Mini Cooper Paceman
- OE numbers: 17137539267, 603-332, 603332
What’s included
- 1 x Radiator Coolant Overflow Reservoir Tank
- 1 x Cap
Quality you can rely on
Designed with premium materials, the reservoir resists corrosion and withstands the vibrations of the engine bay. This durable construction aims to minimize leakage risk and support long-term service in daily use and longer journeys alike.
Installation and fit
Before purchasing, compare part numbers to ensure compatibility. The cap uses standard sealing threads to help prevent leaks and maintain proper pressure within the cooling system. For installation, consult the vehicle service manual or a qualified technician.
Real-world scenarios
On hot days, the reservoir can manage excess coolant as the engine works harder. During cold starts, it supports a steady return of coolant as temperatures rise. The result is a neater engine bay and reduced spill risk when refilling coolant later.
FAQ
Q: Is this reservoir compatible with my BMW i3 or Mini Cooper?
A: Yes. Verify fit using OE numbers 17137539267 or 603-332 before purchasing.
Q: What comes in the package?
A: One coolant overflow reservoir tank and one cap are included for installation.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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