01
Real experience
We test before we recommend.
PRODUCT DESCRIPTION
TOYOTA GR COROLLA COMPATIBILITY
OVERVIEW Due to the continuous and intense heat cycling during track use, plastic coolant reservoirs often fail over time. Fortunately, Radium Engineering's robust 2-piece replacement reservoir is CNC-machined and anodized for enhanced durability. Furthermore, since aluminum is a superior thermal conductor, heat transfer is even improved. Its metal construction is robust enough for competition use.
This kit directly replaces the Toyota plastic reservoir. A specially designed mounting bracket attaches to existing threaded holes and adapters connect to the factory hoses. The reservoir's functionality is the same as the original cooling system. Additionally, the reservoir holds the same coolant capacity as the factory unit. However, its reduced size allows for more engine bay space for other modifications and easier engine access for servicing. Radium Engineering's coolant expansion tank has proven its effectiveness over the years in numerous applications worldwide, in both race and street vehicles.
Its internal design features two chambers with crossover passages at the top and bottom. The coolant reservoir also features an internal swirl system to help de-aerate the system.
INCLUDES: - 2-piece machined aluminum reservoir - Aluminum mounting bracket - Machined adapters - 7/32" overflow hose - Stainless steel hardware
Instruction PDF










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
01
We test before we recommend.
02
We help you choose the right part.
03
Only trusted manufacturers.
04
Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.