The GR Corolla has really made a name for itself in the hot hatch scene, especially if you’re someone who loves hitting the track. It’s got this impressive 1.6L three-cylinder turbo engine that’s actually borrowed from the GR Yaris, and let me tell you, it’s a little beast. The power delivery is fantastic, and when you combine that with the all-wheel-drive system, a well-tuned suspension, and a stiff chassis, you’re looking at a track-ready machine that’s hard to beat.

Now, if you’re like me and you’ve been pushing the limits of your GR Corolla or GR Yaris, you might have noticed the factory radiator struggling to keep up. That’s where CSF steps in. After the success of their CSF x Jackson Racing High-Performance Stepped Core Intercoolers, there’s been a lot of buzz about a high-performance radiator, and they’ve delivered just that with their new all-aluminum option.

CSF has been around the block when it comes to Toyota cooling systems. They’ve gathered a ton of feedback from customers and race teams, and their expertise is pretty unmatched. As more enthusiasts crank up the power on their GR Corollas and Yaris models, the stock radiator just can’t handle the heat anymore. Bigger turbos mean more heat, and with the intercooler sitting right in front of the radiator, it’s a recipe for trouble. If you’re not careful, you could end up with your car going into limp mode when you need it most.

Let’s talk about the factory radiator for a second. It’s made of plastic and has a single-row aluminum core. While it’s decent for daily driving, it’s definitely not built for high-performance applications. The 5mm fins on the stock unit do their job, but the core thickness is only 27mm, which is pretty limiting when you start pushing the car hard.

CSF’s new radiator is a game changer. They’ve packed in a 2-row, 42mm aluminum core that’s a significant upgrade over the factory setup. This not only boosts fluid capacity but also enhances heat dissipation. Plus, with their exclusive B-Tube Technology, you’re getting about a 15% increase in heat transfer. Those multi-louvered fins? They maximize airflow, ensuring your engine stays cool even when you’re really pushing it.

Durability is another big win here. The TIG-welded, all-aluminum construction means you won’t have to worry about it failing during hard driving sessions. And for those who want to keep a close eye on coolant temps, there’s a pre-plugged 1/8th NPT temperature sensor port on the right side tank. It’s all about keeping things efficient and reliable.

Installation is a breeze, too. This radiator is designed to drop right into the factory location without any modifications. CSF even thought ahead for those of you using the CSF x Jackson Racing Intercooler or other larger aftermarket intercoolers. They’ve made sure there’s extra clearance in the end tanks, so you won’t run into any fitment issues.

It’s also worth noting that CSF has engineered this radiator to fit both the GR Corolla and GR Yaris. That’s a smart move for dealers and distributors since they only need to stock one part for both applications.

Features:

• 2-Row, 42mm Ultra-High-Performance Core
• Cooling Tubes with CSF's Exclusive B-Tube Technology
• New 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• CNC Machined Mounting Brackets and OEM Style Inlet/Outlet
• Pre-plugged 1/8th NPT temperature sensor port on right side tank
• Pre-installed foam strips on top and bottom end plates for increased sealing
• Recessed lower end tanks designed with additional clearance for larger aftermarket intercoolers
• 100% All Aluminum TIG-Welded Construction
• Hand Brushed Satin Finish
• True Plug-and-Play "Drop-in Fit" Installation Requires Absolutely No Modifications
• Individually Leak and Pressure Tested
• 2-Year Limited Warranty

Fitment:

• Toyota GR Corolla (OE No. 16400-18060) 2023-2025
• Toyota GR Yaris (OE No. 16400-18050) 2020-2025

So if you’re serious about performance and want to keep your GR Corolla or GR Yaris running cool, this CSF radiator is definitely worth considering. It’s built to take the heat and keep you on the track longer.