2023+ Toyota GR Corolla

As the Toyota GR Corolla enters its third model year, we’ve been hard at work expanding our lineup of performance products for the rally-inspired machine. The 1.6 liter three-cylinder G16E-GTS engine is the highest power-per-liter output of any Toyota road car engine with each cylinder responsible for 100 horsepower, boasting a total of 300 horsepower out of a remarkably small engine. The engineers at Toyota’s Gazoo Racing Division achieved this feat by pairing the G16E-GTS with a turbocharger capable of 26.3 psi of boost.

In the blog about our Performance Radiator for the GR Corolla we talked about how important cooling is for one of the most powerful three-cylinder engines in history. The same is true for the GR Corolla’s intercooler system. The turbocharger is a vital part of the GR Corolla’s performance, and when you’re driving the car how it's meant to be driven—setting lap times at the track, carving up and down mountain roads, or spirited cruising down your favorite backroad—that

Following the immense success of the rally-inspired GR Yaris overseas, Toyota’s Gazoo Racing division needed an offering for the North American market. After years of work—including delays brought on by Toyota CEO Akio Toyoda, who wasn’t initially satisfied with the prototype—their result was the Toyota 2023 GR Corolla. Sharing the unique 1.6 liter three-cylinder G16E-GTS engine with the GR Yaris, the GR Corolla puts out an impressive 300 horsepower and 273lb-ft of torque.

So, what does having one of the most powerful three-cylinder engines in history mean? Well, it means you’re in for a lot of fun. But it also means when you’re driving hard, you’ve got to keep that straight-three engine cool. That’s why we’ve been hard at work developing the aluminum Performance Radiator for the 2023+ Toyota GR Corolla.

Our engineer, Mitch, started off by ditching the stock radiator’s plastic end tanks for a more reliable aluminum construction.

Elevate the performance and aesthetics of your 2023+ Toyota GR Corolla with the new Aluminum Mishimoto Coolant Expansion Tank. Our direct-fit tank is designed to be a significant improvement over the stock system, boasting a 40% fill line capacity increase and a 50% overall tank coolant capacity increase. The robust aluminum construction won’t yellow, crack, or leak with repeated heat cycles like the stock plastic tank will, and the micro-wrinkle red or black power-coated finish offers a sleek and stylish look for the engine bay of your GR Corolla.

This expansion tank features internal baffles that are designed to prevent air entry during aggressive driving, resulting in consistent coolant flow and optimal engine temperature whether you’re commuting to work or trying to set a new track lap record. This design, coupled with the robust welded construction and capacity increases, means our Toyota Corolla coolant reservoir offers dependable and long-lasting performance in any driving scenario.