CSF Radiators BMW G90/G99 M5, F90 M5, F92 M8, F10 M & F12 M6 High Performance Engine Oil Cooler

Take your BMW G90/G99 M5, F90 M5, F92 M8, F10 M5 or F12 M6 to the next level of reliability and performance with the CSF High Performance Engine Oil Cooler (8317). Designed for the legendary S63 twin-turbo V8 and proven to also work with the new S68 engine, this upgrade solves one of the biggest weaknesses of the factory system: oil temperature management under extreme load.

BMW’s factory oil cooler struggles when power levels rise or during demanding track sessions, with owners reporting temperatures climbing beyond 240°F (115°C). High oil temps not only sap performance but can also trigger limp mode or, worse, cause long-term engine damage. The CSF #8317 oil cooler was engineered in collaboration with Carbahn to withstand the extra heat from high-output builds, including stroker kits and 1000+ hp applications, while offering improved durability over the vulnerable OEM unit.

Key Engineering Upgrades

• 33% Larger Core – Increased thickness (60mm vs. OEM 45mm) with three additional rows of cooling, boosting capacity by 0.5 quarts (0.47L).

• Heavy-Duty Bar & Plate Core – Replaces the fragile OEM tube-and-fin design for maximum strength and improved heat dissipation.

• CNC-Machined Connection Blocks – TIG-welded for extreme durability under high boost and track abuse.

• TIG-Welded End Tanks – Stronger and more reliable than OEM brazed construction, minimising the risk of leaks.

• Optimised Cooling Design – 14 cooling tubes and 15 fin rows (vs. OEM’s 11 tubes and 12 rows) for greater thermal efficiency.

CSF vs. OEM at a Glance

Why Upgrade?

Whether you’re running stock turbos, a mild tune, or pushing beyond 1000hp, excessive oil temps are the enemy of both performance and reliability. The CSF 8317 oil cooler not only keeps your S63/S68 running cooler but also provides the strength to withstand impacts and front-end scrapes that often damage the OEM unit. It’s a smart preventative upgrade for daily drivers, weekend builds, and full track weapons alike.

Compatibility

• BMW G90/G99 M5 (S68)

• BMW F90 M5 (S63)

• BMW F92/F93 M8 (S63)

• BMW F10 M5 (S63)

• BMW F12/F13 M6 (S63)

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.

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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.

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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.