Dinan High Performance Heat Exchanger for BMW 16-20 3 Series and 2 Series F30/F31/F32/F33/F34/F36

The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15&deg IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment! F22/F23/F30/F31/F32/F33/F34/F36 Due to the enlarged core and unique "L" shaped endtanks minor modification to the plastic core stack shroud may be required with some factory configurations ( particularly those with the optional OEM hot climate heat exchanger). Consult the installation PDF for full documentation on what exactly that entails.

• Average of 8&deg reduction in IAT's with a maximum reduction of 15&deg over 15 successive WOT pulls
• Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets)
• Reduces the tendency to heat soak / go in to limp mode
• 48mm thick Dinan cooler vs. 27mm thick stock cooler
• 78% more cooling surface area and volume than stock
• 100% TIG welded and pressure tested

The Dinan DNND780-0002 high performance heat exchanger is engineered to enhance the cooling efficiency of select BMW models from 2016 to 2020, including the 330i, 340i, and M240i series. Featuring a robust 48mm thick core, this heat exchanger offers a significant upgrade over the factory 27mm core, providing 78% more heat transfer surface area for improved thermal management. Its unique "L" shaped end tanks are designed to accommodate the increased core volume, ensuring optimal heat absorption and dissipation during demanding driving conditions. This advanced design results in an average of 8°F reduction in intake air temperatures (IATs), with peak improvements of up to 15°F over multiple WOT pulls, helping to prevent heat soak and reduce the likelihood of limp mode, thereby extending maximum performance duration. The unit is fully TIG welded and pressure tested to meet high standards of durability and reliability, with installation hardware included, including xDrive-specific transmission oil cooler brackets for seamless integration. The Dinan heat exchanger requires minor modifications to the plastic core stack shroud in some configurations, particularly those equipped with the OEM hot climate heat exchanger, and detailed installation instructions are provided for proper setup. This upgrade is essential for enthusiasts seeking to optimize engine cooling, especially during aggressive driving or track use, ensuring consistent power delivery and enhanced vehicle longevity. Please note that this product is not CARB approved and is intended for off-road use only. Trust Dinan’s reputation for performance engineering with this high-quality, reliable cooling solution designed specifically for your BMW's performance needs.

Features:

• 48mm thick core for enhanced heat transfer

• 78% more cooling surface area than stock

• Unique "L" shaped end tanks for improved thermal mass

• Reduces intake air temperature by up to 15°F

• Includes installation hardware with xDrive transmission cooler brackets

• Fully TIG welded and pressure tested for durability

• Designed for high-performance driving and extended track use

• Minor modifications may be necessary for some factory configurations

Fitments:
2016 BMW 340i Base
2016 BMW 340i xDrive Base
2017 BMW 230i Base
2017 BMW 230i xDrive Base
2017 BMW 330i Base
2017 BMW 330i GT xDrive Base
2017 BMW 330i xDrive Base
2017 BMW 340i Base
2017 BMW 340i GT xDrive Base
2017 BMW 340i xDrive Base
2017 BMW 430i Base
2017 BMW 430i Gran Coupe Base
2017 BMW 430i xDrive Base
2017 BMW 430i xDrive Gran Coupe Base
2017 BMW 440i Base
2017 BMW 440i Gran Coupe Base
2017 BMW 440i xDrive Base
2017 BMW 440i xDrive Gran Coupe Base
2017 BMW M240i Base
2017 BMW M240i xDrive Base
2018 BMW 230i Base
2018 BMW 230i xDrive Base
2018 BMW 330i Base
2018 BMW 330i GT xDrive Base
2018 BMW 330i xDrive Base
2018 BMW 340i Base
2018 BMW 340i GT xDrive Base
2018 BMW 340i xDrive Base
2018 BMW 430i Base
2018 BMW 430i Gran Coupe Base
2018 BMW 430i xDrive Base
2018 BMW 430i xDrive Gran Coupe Base
2018 BMW 440i Base
2018 BMW 440i Gran Coupe Base
2018 BMW 440i xDrive Base
2018 BMW 440i xDrive Gran Coupe Base
2018 BMW M240i Base
2018 BMW M240i xDrive Base
2019 BMW 230i Base
2019 BMW 230i xDrive Base
2019 BMW 330i GT xDrive Base
2019 BMW 330i xDrive Base
2019 BMW 340i GT xDrive Base
2019 BMW 430i Base
2019 BMW 430i Gran Coupe Base
2019 BMW 430i xDrive Base
2019 BMW 430i xDrive Gran Coupe Base
2019 BMW 440i Base
2019 BMW 440i Gran Coupe Base
2019 BMW 440i xDrive Base
2019 BMW 440i xDrive Gran Coupe Base
2019 BMW M240i Base
2019 BMW M240i xDrive Base
2020 BMW 230i Base
2020 BMW 230i xDrive Base
2020 BMW 430i Base
2020 BMW 430i Gran Coupe Base
2020 BMW 430i xDrive Base
2020 BMW 430i xDrive Gran Coupe Base
2020 BMW 440i Base
2020 BMW 440i Gran Coupe Base
2020 BMW 440i xDrive Base
2020 BMW 440i xDrive Gran Coupe Base
2020 BMW M240i Base
2020 BMW M240i xDrive Base
2021 BMW 230i Base
2021 BMW 230i xDrive Base
2021 BMW M240i Base
2021 BMW M240i xDrive Base

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