Improved Cooling Performance

One of the biggest upgrades over the stock radiator is:

• Improved heat dissipation
• Better airflow management
• Increased thermal stability

This helps maintain:

• Lower coolant temperatures
• Reduced heat soak
• Better sustained performance
• More consistent power delivery

Especially beneficial during:

• Track sessions
• Canyon runs
• Stop-and-go traffic
• Hot summer driving
• Aggressive spirited driving

Where stock cooling systems occasionally begin reconsidering their career choices.

The fiesta ST is an incredible choice of car for the track or autocross, but it can be afflicted by some Cooling deficiencies. It’s hard to win a race If it’s important to hit the pits after only a couple Laps. Constructed of 100% aluminum and featuring a 3-row core, this fiesta ST radiator is the ultimate in Cooling efficiency.

Full Aluminum Radiator Design

Unlike factory radiators that commonly use:

• Plastic end tanks
• Crimped seams
• Aging factory materials

The Mishimoto radiator uses:

• Full aluminum construction
• Welded aluminum tanks
• Performance-grade cooling materials

This improves:

• Durability
• Pressure resistance
• Cooling efficiency
• Long-term reliability

Because turbocharged hatchbacks already contain enough stress without adding cracked plastic radiator tanks into the equation.

This Mishimoto fiesta ST radiator will make sure your fiesta is running cool, Lap after Lap. The radiator core measures in at a massive 52mm thick, requiring our engineers to get creative with the fitment of the fan and shroud.

Compact Fan Shroud for Better Airflow

One standout feature is the:

• Included compact fan shroud design

This helps improve:

• Airflow efficiency
• Cooling consistency
• Heat evacuation
• Fan performance

Especially useful in:

• High-RPM driving
• Traffic
• Track environments
• Warm climates

Because turbocharged EcoBoost engines produce enough heat to qualify as compact industrial equipment.

Unlike other Mishimoto radiators, this fiesta ST radiator includes a Mishimoto compact fan shroud for increased airflow through the radiator.

Large Performance Core Design

Specifications include:

• Overall size: 25.67” x 19.25” x 7.1”
• Core size: 24.68” x 14.4” x 2.04”

The larger core design helps provide:

• Increased cooling surface area
• Better thermal transfer
• Improved coolant efficiency
• Faster temperature recovery

Especially during repeated pulls where the stock radiator starts emotionally overheating alongside the driver.

This compact fan shroud retains using the stock Electric fans, and was once stringently tested to make sure that the airflow remained intact for performance applications.

Better Cooling for Tuned Fiesta ST Builds

This radiator is especially valuable for:

• Tuned EcoBoost setups
• Big turbo builds
• E30/E85 tunes
• Track-day cars
• Autocross builds

Improved cooling helps reduce:

• Heat soak
• Coolant temperature spikes
• Thermal fatigue
• Power loss during extended driving

Because modern turbo engines love power upgrades almost as much as they love generating heat afterward.

Testing right through steady-state driving yielded coolant temperature drops of 10°f (5.5°C) When in comparison to the stock fiesta ST radiator and fan shroud. Like the remainder of the Mishimoto lineup of fiesta ST parts, this radiator comes with the Mishimoto lifetime warranty, to make sure superior quality and craftsmanship.

OEM-Style Direct Fit Installation

The radiator is engineered for:

• Direct-fit installation
• OEM mounting compatibility
• Factory hose integration

Typical installation requires:

• Coolant drain
• Basic socket set
• Hose clamp pliers
• Approximately 2-4 hours

No major:

• Fabrication
• Cutting
• Custom mounting typically required

Which is fortunate, because compact hatchback engine bays already resemble tightly packed mechanical anxiety.

Compatible Ford Fiesta ST Models

The Mishimoto Performance Aluminum Radiator is compatible with:

• 2014+ Ford Fiesta ST

Perfect for:

• Daily-driven hot hatches
• Tuned EcoBoost builds
• Track-focused cars
• Canyon-driving setups
• Aggressive street builds

Because no Fiesta ST owner buys one intending to leave it quiet or reasonable.

All-aluminum design includes Mishimoto’s compact fan shroud for increased airflow
Overall Size: 25.67” x 19.25” x 7.1” / Rad Core Size: 24.68” x 14.4” x 2.04”
Reduces coolant temperatures by 10°F with no cutting or fabrication necessary

Why Upgrade the Fiesta ST Radiator?

Common reasons Fiesta ST owners upgrade radiators include:

• Heat soak during spirited driving
• Track overheating concerns
• Tuned EcoBoost cooling demands
• Preventative maintenance
• Reliability upgrades
• Hot climate performance

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

• Heat kills power consistency
• Small turbo cars generate huge thermal load
• Track sessions expose cooling limitations quickly

Especially once boost pressure starts climbing.

Final Verdict

For 2014+ Ford Fiesta ST owners wanting improved cooling performance and long-term reliability, the Mishimoto Performance Aluminum Radiator delivers major airflow and thermal management improvements with OEM-style fitment.

Key benefits include:

• Full aluminum construction
• Included compact fan shroud
• Improved airflow efficiency
• Better heat dissipation
• Ideal for tuned EcoBoost builds
• Direct-fit installation

Most importantly, your Fiesta ST finally stops treating every canyon run like a thermal stress experiment.