BMW F82 M4 Auxiliary Radiator Upgrade DIY (2015-2021 BMW F80 M3, F83 M4, F87 M2)

►Air-to-water intercoolers have become somewhat of an industry standard for performance vehicles. Regardless of the reasoning for use, it utilizes a separate radiator to cool the coolant within its dedicated cooling circuit. It's a system perfectly paired with the stock power output. However, the auxiliary radiator will be overmatched once the boost is turned up and the intake air temps are higher. If that's your current issue or one you know you'll eventually have, consider upgrading to an aftermarket radiator.

Increasing the cooling efficiency of the auxiliary radiator will only benefit the charge air temperatures. The more heat can be pulled from the coolant, the more heat will be pulled from the intake air. Colder intake air means a denser air/fuel mixture in the combustion chamber, resulting in more power. It's also a perfect pairing for a larger intercooler, which will carry more coolant.

In this video, Mike Hidalgo, FCP Euro's Professional DIYer, replaces and upgrades the auxiliary radiator on a BMW F82 M4.

00:00 - Intro
01:28 - Tools Needed
02:11 - Draining the Coolant
06:14 - Driver Side Aux Radiator Replacement
09:44 - Passenger Side Aux Radiator Replacement
11:55 - Filling the System with Coolant
16:58 - Wrap-up

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This video applies to the following vehicles:
BMW M3
2015 BMW M3 Radiator
Position: Left
2015 BMW M3 Radiator
Position: Right
2016 BMW M3 Radiator
Position: Left
2016 BMW M3 Radiator
Position: Right
2017 BMW M3 Radiator
Position: Left
2017 BMW M3 Radiator
Position: Right
2018 BMW M3 Radiator
Position: Left
2018 BMW M3 Radiator
Position: Right

BMW M4
2015 BMW M4 Radiator
Position: Left
2015 BMW M4 Radiator
Position: Right
2016 BMW M4 Radiator
Position: Left
2016 BMW M4 Radiator
Position: Right
2017 BMW M4 Radiator
Position: Left
2017 BMW M4 Radiator
Position: Right
2018 BMW M4 Radiator
Position: Left
2018 BMW M4 Radiator
Position: Right
2019 BMW M4 Radiator
Position: Left
2019 BMW M4 Radiator
Position: Right
2020 BMW M4 Radiator
Position: Left
2020 BMW M4 Radiator
Position: Right

BMW M2
2019 BMW M2 Radiator
Position: Left
2019 BMW M2 Radiator
Position: Right
2020 BMW M2 Radiator
Position: Left
2020 BMW M2 Radiator
Position: Right
2021 BMW M2 Radiator
Position: Left
2021 BMW M2 Radiator
Position: Right

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