Vehicle Fitment
2017+ Honda Civic Type-R (FK8 / FL5)
2024+ Acura Integra Type-S
Product Overview
The factory plastic coolant reservoir tank is known to degrade over time due to repeated thermal cycling, making it prone to cracking and failure.
To solve this, Radium Engineering has designed this 2-piece billet aluminum coolant reservoir tank.
It provides a robust, high-performance solution.
CNC machined aluminum construction
Anodized for durability
Excellent heat dissipation
Strength suitable for racing applications
This tank is a bolt-on replacement for the factory unit, requiring no modifications. It mounts in the factory location using a vehicle-specific bracket and connects directly to factory hoses using the included adapter fittings.
Internal Features
Same capacity as the factory tank
Dual-chamber internal design
Crossover passage for pressure equalization between the top and bottom of the tank
Internal swirl features to efficiently remove air from the coolant
This tank is proven in race cars worldwide, ensuring reliability.
Included Parts
| Contents | Material |
|---|---|
| 2-piece Billet Aluminum Tank | Aluminum |
| Tank Mounting Bracket | Aluminum |
| Adapter Fittings | Aluminum |
| Heater Hose (5/16") | Rubber |
| Overflow Hose (7/32") | Rubber |
| Stainless Steel Mounting Bolts | Stainless Steel |
Cap Compatibility
Compatible with the factory radiator cap
Also compatible with the Radium Engineering Type-A Cap
Installation instructions can be found here.
Shafutoya also carries the PRL Motorsports Coolant Reservoir Tank for the FK8 / FL5 Type-R! View it here.
Recommended Cooling Upgrades:
↓Radium Engineering 2017+ Honda Civic Type-R FK8 / FL5 Coolant Tank Kit Installation Video↓
Before Ordering
〇 Regarding Import Duties
At Shafutoya, we cover the import consumption tax incurred during customs clearance, so there are no additional costs beyond the total amount paid at checkout.
〇Fitment Verification
All product databases are based on North American (USDM) specifications. Please verify compatibility with Japanese market (JDM) vehicles before ordering. (If you are unsure if a product fits your vehicle, please feel free to contact us. Our support team will be happy to assist you.)
We cannot accept returns due to fitment issues if the order was placed without prior verification.
Please note that even if items are sorted by selecting the year, manufacturer, and model on our top page, it does not guarantee a direct fit on Japanese market models without modification.
All products are translated into Japanese using software. Please contact us before ordering if any descriptions are unclear.
○ Regarding Shipping
Shipping costs are paid at checkout. Estimates are calculated automatically when you enter your shipping address. For large items such as body parts, the actual shipping cost may significantly differ from the automated calculation in rare cases. In such instances, we will contact you via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping within Japan, please allow 7–14 days for delivery, and order with sufficient time. If you need your order urgently, please contact us for an estimated lead time. Note that all items are shipped via air freight, not sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken)
Products sold by us are generally designed and manufactured outside of Japan. Please be aware that they are not compliant with Japanese vehicle inspection standards ("Shaken"), and we cannot provide documents such as structural strength analysis for this purpose. All parts are sold for "circuit, private property, or off-road use only," and installation and use are at the owner's risk.
○ Regarding Warranty
Please inspect your items immediately upon arrival. Since all products are shipped internationally, there may be cases of shipping damage to the packaging or items. For damaged goods, defects, or incorrect items, we will provide returns, refunds, or exchanges only if you contact us within 7 days of receipt. Please understand that all warranty claims must be handled directly through us. We do not provide support through other companies or distributors based in Japan.