Dinan High Performance Heat Exchanger for BMW M2 M3 M4 F80 F82 F83 F87 - Improved Cooling & Power

Further testing focused on the heat exchanger produced the optimized design you see before you. With 60% more volume and 19% more face area than stock along with being a whopping 40mm thick (stock is 24mm), it becomes quickly apparent how heat soak is averted with the improved setup. While the unit could be physically thicker the 40mm dimension was ultimately chosen with consideration of airflow requirements of the main radiator which is located directly behind the heat exchanger. A thicker core would diminish airflow and sacrifice normal engine cooling which would be potentially detrimental to the long term health of the engine. The increased physical stature of the heat exchanger allows a reduction in water temperatures to the intercooler an average of 9° across the RPM range. The colder water entering the intercooler then improves is efficiency and allows the intake air to be cooled by an additional 6° average across the RPM range compared to the stock unit. The reduction in intake air results in an impressive 10 HP and 20 ft-lb of torque gain without any changes in the engine tune. F80/F82/F83/F87

• 9° average water termperature reduction to the intercooler across the RPM range. Colder water improves intercooler efficiency and allows the intake air to be cooled by an additional 6° average across the RPM range compared to stock
• More Power: Consistent +10 HP / +20 LB-FT of torque on the stock engine tune
• Track tested to ensure consistent performance under extreme conditions
• 60% more core volume & 19% more face area than stock
• 40mm thick Dinan cooler vs. 24mm thick stock cooler
• Significant reduction in tendency to heat soak
• Rubber mounted for vibration isolation

The Dinan 15-21 BMW M2, M3, and M4 High Performance Heat Exchanger (Part Number: dnnD780-0001A) is engineered to optimize engine cooling and enhance performance. Featuring a core with 60% more volume and 19% increased face area compared to the stock unit, this heat exchanger significantly improves heat dissipation. Its 40mm thickness strikes a balance between maximizing cooling capacity and maintaining adequate airflow to the main radiator located behind the unit, ensuring consistent engine cooling and preventing heat soak during demanding driving conditions.
Designed for direct fitment on 2015 to 2021 BMW M2, M3, and M4 models (including F80, F82, F83, and F87 chassis), this high-performance component is built with durability and performance in mind. The increased core size reduces water temperatures by an average of 9°F across the RPM range, allowing cooler water to enter the intercooler. This results in an additional 6°F reduction in intake air temperature, boosting intercooler efficiency. The net effect is a notable increase in horsepower and torque, with gains of approximately +10 HP and +20 lb-ft of torque without any engine tuning modifications.
Manufactured with rubber mounting to isolate vibrations, the Dinan heat exchanger maintains consistent performance even under extreme conditions, making it an ideal upgrade for enthusiasts seeking reliable, high-quality cooling solutions. Its design helps mitigate heat soak, prolonging engine life and improving overall vehicle performance. This product is not CARB approved but complies with Prop 65 standards, ensuring safety and reliability for street and track use. Easy to install and built to Dinan’s high standards, this heat exchanger is an essential upgrade for serious BMW M series drivers looking to maximize their vehicle's cooling capacity and power output.

Features:

• 60% more core volume and 19% increased face area for superior heat dissipation

• 40mm thick design balances cooling performance with airflow requirements

• Reduces water temperature by an average of 9°F across the RPM range

• Enhances intercooler efficiency with an additional 6°F cooler intake air

• Boosts engine power by approximately +10 HP and +20 lb-ft of torque without tuning

• Track tested for consistent performance under demanding conditions

• Rubber mounted for vibration isolation and durability

• Designed for direct fitment on 2015-2021 BMW M2, M3, and M4 models (F80, F82, F83, F87)

Fitments:
2015 BMW M3 Base
2015 BMW M4 Base
2016 BMW M3 Base
2016 BMW M4 Base
2016 BMW M4 GTS
2017 BMW M3 Base
2017 BMW M4 Base
2018 BMW M3 Base
2018 BMW M4 Base
2019 BMW M2 Competition
2019 BMW M4 Base
2019 BMW M4 CS
2020 BMW M2 Competition
2020 BMW M4 Base
2020 BMW M4 CS
2021 BMW M2 Competition

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1