Subaru WRX Radiator 2015+

Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

Mishimoto Subaru WRX Performance Aluminum Radiator

Now that we had a finalized prototype, it was time to test this component to ensure that our improvements over the stock unit resulted in real-world advantages for our customers. An aluminum radiator provides the instantaneous benefit of increased reliability over the stock plastic unit. Despite this, cooling performance is always our primary goal with a heat exchanger.

Prior to actual road testing, our engineering team put together a few charts illustrating the improvements over the stock radiator.

Comparison of coolant surface area in Mishimoto and stock radiators

Coolant surface area refers to the space occupied by the tubes in the radiator. The amount of coolant surface area affects both fluid capacity and overall heat transfer contact points. A larger coolant surface area results in greater heat transfer and lower temperature.

Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

Mishimoto Subaru WRX Performance Aluminum Radiator

No need for an introduction, let's check out our second prototype!

Mishimoto prototype 2 radiator

Mishimoto prototype 2 radiator

Mishimoto prototype 2 radiator

So what can we tell from these images? The unit as a whole is very precise, and the TIG-welding is straight and accurate. All mounting points and adjustments to the previous version should make this a drop-in fit. One major difference you will notice from the GR radiator is the lack of an overflow port on the passenger top tank. On the previous generation, this line would run to the expansion tank located on the intake manifold. The FA20 does not utilize such a reservoir, so this port is removed.

Let's take a closer look at the core of this prototype!

Mishimoto prototype 2 radiator core evaluation

Mishimoto prototype 2 radiator core evaluation

The fin height is a touch shorter

Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

Mishimoto Subaru WRX Performance Aluminum Radiator

Now that we had our first prototype unit in, it was time to evaluate fitment and determine if any changes were necessary when compared to the stock unit. First, we swapped the shrouds to see if any fitment issues existed because of the added size of the Mishimoto unit.

Mishimoto prototype 1 (right) fan shroud fitment

Mishimoto prototype 1 (top) fan shroud fitment

Both the stock and Mishimoto plug-n-play aluminum fan shrouds fit perfectly with the mounting points on our prototype radiator. After verifying this fitment, we installed the prototype in the vehicle to ensure that all other fitment points were spec'd correctly.

Mishimoto prototype 1 installed

Mishimoto prototype 1 installed

Mishimoto prototype 1 installed

Mishimoto prototype 1 installed

The prototype unit fit quite nicely! We had some minor adjustments to make with a few end-tank

Interested in purchasing our 2015 WRX aluminum radiator? Check out our product page for more information!

Mishimoto Subaru WRX Performance Aluminum Radiator

The new 2015 WRX is a great toy for both daily use and as a weekend track warrior. The introduction of the FA20DIT into the WRX chassis has been well received, and from the reviews thus far, Subaru has done a great job with the new model. Although some might disagree with the styling, overall the car handles and performs very well. As for value, the 2015 model is a pretty decent bang for your buck. For those looking to track their brand new vehicle, a few bolt-on modifications will raise power levels significantly. A simple intake and tune will raise power to 275+ whp, which is a huge increase over the 210 whp we saw from a completely stock vehicle. Reaching 300 whp is potentially obtainable with a few additional exhaust modifications. We are currently in the process of testing our prototype J-pipe to confirm this!

With improved power