CSF Toyota Carolla Two piece cooling package

Design & Engineering

CSF and Jackson Racing have long and successful track records with Toyota Performance Products. While the OE Intercooler for the GR Corolla is actually quite efficient and a good design, there is always room for improvement. Using advanced 3D Scanning along with advanced CAD and CFD software, the engineering teams were able to maximize the size of the intercooler while maintaining optimal flow and greatly increasing efficiency.

Stepped Core

The stepped core design increases the overall volume of the intercooler core by 45% and the surface area by 73%. The step core allows for maximum surface area and volume but utilizing all the available space without requiring the bumper or any core supports to be modified or cut. The tanks were carefully engineered to optimize flow through the lower and upper cores resulting in incredible smooth and even flow with maximum heat transfer.

Hoses, Clamps, & Inlet/Outlet

Each Intercooler kit includes motorsport grade hoses and clamps designed specifically to hold up to high boost. High grade 5-ply silicone construction makes the hoses incredibly strong and have a matte black finish for a more stealthy performance look. The clamps are a unique new design that incorporates a bead lock system to help hold up to extremely high boost.

These hoses step up from the factory 1.85in (47mm) diameter to a larger 2.5in (63.5mm) diameter to match the Intercoolers large inlet and outlet. They connect to the factory charge pipes but can be replaced down the line if you want to upgrade your turbo, charge pipes, etc.

Silver and Black Finishes

CSF has become very well known for offering multiple finishes because everyone has different tastes. The intercooler is available in a Black (#8285B) finish for those looking for a more stealthy look behind the grill. The Silver (#8285) finish has a more OEM look, but is also more visible through the front grille.

CSF vs OEM – GR Corolla Intercooler

The performance of the OE Tube & Fin Intercooler is actually quite impressive. It is able to drop charge air temps by almost 150°F which is quite good for even some aftermarket performance intercoolers. The main drawback of the factory unit is how quickly it heat soaks. Post cooler charge air temps can quickly climb by 60°F. The limited surface area really hampers the overall cooling capacity here.

The CSF x Jackson Racing Intercooler features a High-Performance Tube & Fin core. This type of core was selected both for the cooling efficiency, but also for the lighter weight characteristics when compared to Bar & Plate construction. A lighter weight intercooler helps keep excess weight off the front end, keeping the agile handling characteristics of the GR Corolla. The stepped core design gives the CSF x Jackson Racing unit a 45% larger core volume and 73% more surface area than the OE cooler.

The TIG-Welded Cast Aluminum end tanks increase the overall strength of the intercooler. This improves durability and longevity so you can be confident it will hold up to hard driving conditions. The CSF x Jackson Racing Intercooler mounts in the factory location and requires no modifications to the bumper or crash bar. The OEM ducting does requiring trimming to be used. This ducting helps guide air into the upper stepped core.

Testing CSF vs OEM

Testing was performed at World Motorsports in Torrance, CA with the help of Moto IQ . The OEM intercooler was run first to establish a baseline. You can see the OEM intercooler reaches heat soak relatively quickly (about 3 pulls). Performance was fairly impressive for an OEM intercooler, able to drop the charge air temperatures approximately 150ºF.

The CSF x Jackson Racing Intercooler just blew the factory system out of the water though. Charge air temperatures were reduced by more than 240ºF. That's 90ºF more than the OEM intercooler. This resulted in much lower Intake Air Temperatures (IATs) and that were just a few degrees over ambient. On top of that, heat soak took twice as long to set in. Even when heat soaked, the charge air temperatures remained around 60ºF cooler than that of the factory intercooler.

You can watch the full video below of Mike Kojima (Moto IQ Editor in Chief) discussing the performance and quality of the intercooler kit.

⚠ Fitment Notes

Confirmed to fit the 2025+ GR Corolla with both Automatic and Manual Transmissions.

⚠International Fitment Notes

The CSF x Jackson Racing Intercooler fits the 2020+ GR Yaris with some modifications. Please contact CSF for details.

Design & Engineering

CSF is well known for making the best Toyota cooling systems in the world. With years of feedback from Customers, Race Teams, and Development Partners, CSF has more experience with Toyota cooling systems than any other company in the world.

With more and more people pushing the limits of the GR Corolla / GR Yaris, the factory radiator has started showing its limitations. Bigger turbos cranking out more power create a lot more heat that needs to be dissipated. Furthermore, the intercooler is mounted directly in front of the radiator, so all the heat shed by that system runs through it. In racing applications this can be detrimental to engine coolant temperatures and risk sending your GR Corolla / GR Yaris into limp mode.

CSF vs OEM

The original OE radiator from Toyota is a plastic tank with a single row aluminum core design. While this is generally accepted as good quality and durable, there is always room for improvement. The 5mm fins on the OE radiator made the system fairly efficient for a factory unit. The core itself is one of the biggest limiting factors at only 27mm thick and a single cooling row.

With data collected by development partners and race teams, CSF was able to design the ideal High-Performance replacement. The CSF radiator features the latest 5mm fin technology. These fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow. The core is much larger than the factory featuring 2-Row 42mm aluminum core. This both increases the fluid capacity of the radiator, and improves the cores ability to dissipate heat. CSF's Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. In addition, the super-efficient multi-louvered fins maximize airflow through the core for the best possible performance.

The TIG-Welded 100% All Aluminum construction increases the overall strength of the radiator. This improves durability and longevity so you can be confident it will hold up to hard driving conditions. The right side tank includes a pre-plugged 1/8th NPT temperature sensor port for those looking for more accurate coolant temperature readings. Pre-installed foam strips on top and bottom end plates improve sealing for better airflow over the radiator. The CSF radiator mounts in the factory location and requires no modifications or cutting.

Intercooler Clearance

The CSF x Jackson Racing Intercooler and some other aftermarket intercoolers utilize piping/hoses that are larger in diameter than the factory units. These larger intercooler pipes may have clearance issues with other aftermarket radiators. CSF carefully designed the end tanks on the #7233 with additional clearance for the CSF x Jackson Racing Intercooler while maintaining optimal volume and flow.

GR Corolla & GR Yaris Cross Compatibility

The engineering team at CSF spent extra time developing a radiator that could fit both the GR Corolla and GR Yaris. The factory radiator are very similar, but not interchangeable. This cross compatibility is a huge advantage for Dealers and Distributors as they only have to stock one part for both applications.