CSF Radiators BMW G90 & G99 M5 S68 High Performance Charge Air Coolers

Upgrade your BMW G90 M5 or G99 M5 Touring with the latest CSF Charge Air Coolers, engineered to solve the weak points of the factory system. The stock BMW S68 charge air coolers struggle with heat and pressure under tuning, limiting the full potential of the car. CSF’s high performance charge air coolers deliver stronger construction, larger cores, and superior cooling efficiency — making them the go-to solution for enthusiasts pushing the limits of the new G9X M5 platform.

The new BMW G90 and G99 M5 with the S68 twin-turbo V8 continues the M5’s legacy as the ultimate high-performance saloon. While the platform delivers incredible stock power, one of its main limitations comes from the fragile factory charge-air coolers. These OEM units struggle with heat and pressure when tuned, creating a bottleneck for power gains. CSF has solved this issue with the High Performance Charge Air Coolers, purpose-built for the G9X M5 and engineered to handle extreme boost, heat, and horsepower levels well beyond factory specifications.

CSF has already proven the formula with its S63/S68 charge-air coolers (CSF #8178 & #8315) on the F90 M5/M8 and F9X X5M/X6M, trusted worldwide on 900+ whp builds. That same technology has now been refined for the G90/G99 M5, ensuring reliability and performance for both tuned street cars and record-setting builds.

Key Features

• ~100% Larger Core Volume vs OEM factory charge-air coolers for maximum heat rejection.

• TIG-welded cast aluminium end tanks – replaces weak crimped-on OEM plastic tanks.

• Integrated cast aluminium charge pipe – eliminates glued-on plastic OEM charge pipes.

• CFD-optimised design for superior flow and reduced pressure drop.

• OEM-style quick connect water fittings and sensor ports for hassle-free installation.

• Dual 1/8″ NPT ports on both outlet air tanks for methanol/nitrous injection.

• Durable OEM+ crinkle black finish (custom finishes available at extra cost).

• Proven performance on world’s fastest S63/S68 builds including 1200+ hp applications.

• Lifetime CSF warranty against defects.

Design & Engineering

CSF’s engineering team leveraged experience from over 500+ S63 intercooler kits already in use globally. Using CFD (Computational Fluid Dynamics) analysis, CSF designed cores with maximum surface area and optimised fin density to control intake air temps under extreme load. The result is significantly improved thermal efficiency with minimal pressure drop, ensuring consistent performance under sustained hard driving, track use, or high-boost tuning.

The one-piece cast end tanks and integrated charge pipe eliminate weak points found in OEM units, ensuring the system can withstand much higher boost pressures without leaks or failure. This stronger construction allows tuners and enthusiasts to safely push the S68 platform to its full potential.

Real World Results

Testing on a stock BMW G90 M5 produced 696 whp and 729 wtq on pump fuel. After fitting CSF High Performance Charge Air Coolers alongside an upgraded carbon intake system, performance exhaust, and tuning module, the same car delivered 757 whp and 828 wtq – gains of over +60 horsepower and nearly +100 lb-ft of torque.

Importantly, these results were recorded in extreme 100°F heat and high humidity, proving the CSF coolers’ ability to maintain intake air temperature stability even under the harshest real-world conditions.

Compatibility

• 2024+ BMW G90 M5 (S68)

• 2024+ BMW G99 M5 Touring (S68)

*Fitment Notes:

This product requires some minor modifications to install. The mounting pins that the coolers rest on will need to be shaved down to help the CSF coolers sit in a better position. CSF also recommends trimming the the air balancing tube to improve the fitment. The installation requires fine adjustments and aesthetic results will depend on the skill of the installer.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.