Massive Temperature Reduction

One of the biggest advantages is:

• Coolant temperature reductions of 20+°F

This dramatically improves:

• Thermal stability
• Heat soak resistance
• Cooling consistency
• Sustained performance

Especially beneficial during:

• High boost pulls
• Summer traffic
• Track sessions
• Repeated acceleration
• Aggressive canyon driving

Where stock cooling systems occasionally begin emotionally overheating.

The Mishimoto Subaru WRX Performance Aluminum Radiator is designed and engineered to reduce coolant temperatures by +20 Degrees Fahrenheit (+11 Degrees Celsius ), maximize cooling efficiency by as much as 15 percent, and most importantly to give protection to your car from overheating.

Full Aluminum 2-Row Core Design

The Mishimoto radiator features:

• Full aluminum construction
• Two-row performance core
• Increased thermal surface area

Specifications:

• Overall size: 28.1” x 21.8” x 3.3”
• Core size: 27.41” x 13.39”
• Two-row design

This improves:

• Heat transfer efficiency
• Airflow cooling performance
• Coolant circulation stability
• Long-term cooling reliability

Especially important because FA20DIT engines generate enough heat to make intercoolers nervous.

It’s the ideal upgrade to the stock Subaru radiator, whether you drive your vehicle day by day or take it for track runs. The Mishimoto WRX radiator includes a lightweight dual core, 100 percent brazed aluminum, and polished end tanks, enhancing the overall performance of your engine.

Full Aluminum Construction Benefits

Unlike factory radiators that commonly use:

• Plastic end tanks
• Crimped seams
• Aging OEM materials

The Mishimoto radiator uses:

• TIG-welded aluminum tanks
• Reinforced aluminum construction
• Performance-grade cooling materials

Helping improve:

• Durability
• Pressure resistance
• Long-term reliability
• Track survivability

Because turbocharged Subarus already contain enough mechanical stress naturally.

The engineers at Mishimoto designed this radiator with a 117 percent increase in coolant capacity, 42 percent increase in coolant surface area, and 34 percent increase in air surface area, making it a super upgrade to keep your new FA20-DIT running cool!

Better Cooling for Tuned FA20DIT Builds

This radiator is especially valuable for:

• E-tuned WRXs
• Flex fuel setups
• Larger turbo upgrades
• Track-day cars
• Aggressive street builds

Improved cooling helps reduce:

• Heat soak
• Coolant spikes
• Thermal fatigue
• Power loss during extended pulls

Especially because modified FA20 engines create temperatures roughly equivalent to a small industrial heater.

Each Mishimoto aluminum radiator is an immediate stock fit making installation effortless with out a cutting or modification required. All Mishimoto radiators come with a Mishimoto 1.3 Bar High-Pressure Radiator Cap and the Mishimoto Lifetime Warranty, including twist of fate protection.

Compatible Subaru WRX Models

The Mishimoto Performance Aluminum Radiator is compatible with:

• 2015 Subaru WRX
• 2016 Subaru WRX
• 2017 Subaru WRX
• 2018 Subaru WRX
• 2019 Subaru WRX
• 2020 Subaru WRX
• 2021 Subaru WRX

Perfect for:

• Stage 1 and Stage 2 builds
• Flex fuel setups
• Big turbo cars
• Daily-driven WRXs
• HPDE track cars
• Autocross builds

Because no WRX owner hears turbo noises once and decides:
“Yep, stock forever.”

Overall Size: 28.1” x 21.8” x 3.3” / Core Size: 27.41” x 13.39” / Rows: 2
Reduces coolant temperatures by 20+°F

Ideal for Track & Canyon Driving

Aggressive driving creates:

• Sustained high RPM operation
• Elevated coolant temperatures
• Turbocharger heat soak
• Increased thermal load

A larger aluminum radiator helps maintain:

• Stable operating temperatures
• Better power consistency
• Improved long-session reliability
• Reduced overheating risk

Especially important because limp mode tends to ruin perfectly good canyon runs.

TIG-welded aluminum radiator includes high-pressure rad cap and magnetic drain plug
Mishimoto Lifetime Warranty

OEM-Style Direct Fit Installation

The radiator is engineered for:

• Direct bolt-in installation
• OEM hose compatibility
• Factory fan integration

Typical installation requires:

• Coolant drain
• Socket set
• Hose clamp tools
• Approximately 2-4 hours

No major:

• Fabrication
• Cutting
• Custom mounting typically required

Which is fortunate, because modern Subaru engine bays already resemble tightly packed turbo plumbing experiments.

Why Upgrade the WRX Radiator?

Common reasons WRX owners upgrade radiators include:

• Heat soak reduction
• Track overheating concerns
• Tuned FA20 cooling demands
• Preventative maintenance
• Big turbo reliability
• Summer driving performance

A performance radiator remains one of the smartest upgrades for turbo Subarus because:

• Heat kills consistency quickly
• Turbocharged engines create massive thermal load
• Modified WRXs overwhelm stock cooling systems fast

Especially once ethanol and boost pressure enter the conversation.

Final Verdict

For 2015-2021 Subaru WRX owners wanting improved cooling performance and long-term reliability, the Mishimoto Performance Aluminum Radiator delivers serious thermal management improvements with track-capable cooling efficiency.

Key benefits include:

• 20+°F coolant temperature reduction
• Full aluminum construction
• Two-row performance core
• Improved heat dissipation
• Ideal for tuned FA20 builds
• Direct-fit installation

Most importantly, your WRX finally stops treating every full-boost pull like a thermal stress experiment.