The Max Cooling Upgrade enhances the thermal performance of 2018–2023 Mustang 5.0L models equipped with a supercharger by increasing airflow through the radiator, heat exchangers, and engine bay. This system mirrors the cooling package installed on production Stage 3 models, providing significant gains in both engine and supercharger cooling capacity. CAD-designed brackets, formed hoses, and fascia-integrated airflow channels ensure OE-quality fitment and improved airflow management without requiring washer bottle relocation.

Roush Performance 422270 Max Cooling Upgrade Features:

• Fits 2018-2023 Mustang 5.0L equipped with a supercharger
• Increases engine cooling capacity by 28-percent
• Boosts supercharger cooling capacity by 22-percent
• Heat-extracting fender vents reduce underhood temperatures by up to 14-percent
• Front fascia corner pockets designed to improve airflow through the bumper
• Auxiliary engine and supercharger coolers provide additional thermal efficiency
• OE-style CAD-designed steel brackets for secure mounting
• Formed hoses with quick-connect fittings for clean installation
• No windshield washer bottle relocation required
• Validated through drag racing, autocross, and road course testing

Roush Performance 422270 Max Cooling Upgrade Includes:

• Auxiliary engine cooler (left/driver side)
• Auxiliary supercharger cooler (right/passenger side)
• (2) Heat-extracting fender vents
• (2) Gloss black front fascia corner pockets

Roush Performance 422270 Max Cooling Upgrade Notes:

• Designed for supercharged Mustang 5.0L applications only
• Installation requires modification of factory fender liners for airflow routing

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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