CSF F1X M5/M6 & F9X M5/M8 High-Performance Engine Oil Cooler

The BMW S63 Twin-Turbo V8 is the beating heart of the F1X M5/M6 and F9X M5/M8, delivering incredible performance. Over the years, CSF has been a key player in pushing the power limits of the S63 with its Twin Charge Air Coolers (CSF #8109 & CSF #8178). Today, many M5s, M6s, and M8s are producing well over 1000HP, but with increased power comes increased heat.

As power levels climb, so do oil temperatures, with some owners reporting temperatures exceeding 240°F (115°C) on hot track days. With power limits being pushed further than ever and many of these M cars aging, factory cooling systems struggle to keep up.

Steve Dinan’s Carbahn originally approached CSF about making this oil cooler to compliment their new S63 Stroker Kit. Carbahn engineers worked closely with CSF to design an oil cooler that could handle the power and heat increases. Now, CSF is proud to introduce the High-Performance Engine Oil Cooler for the F1X M5/M6 & F9X M5/M8, a must-have upgrade for S63 owners.

Design & Engineering

CSF collaborated with the team at Carbahn to ensure maximum compatibility and performance, creating a drop-in solution for both platforms. Designed specifically to handle the extra heat of their new S63 Stroker Kit, this oil cooler built for ultimate performance and power.

However, performance isn’t the only reason to upgrade. Many F1X & F9X owners have been forced to replace their oil coolers due to leaks and damage, largely because of their vulnerable mounting position; a problem that worsens with lowered suspension setups. A stronger, more robust design was needed to solve these issues.

CSF vs OEM

The original OE oil cooler from BMW is an all metal design which would make you think it would be fairly robust. However, there are several weak spots in the design that make it far less durable than it could be. The CSF design resolves these issues with more robust materials and reinforcing weak points.

At first glance, the original BMW OE oil cooler appears solid due to its all-metal construction. However, design weaknesses make it far less durable than expected. CSF tackled these flaws by using stronger materials and reinforced engineering to create a superior replacement:

• CNC-Machined Connection Blocks – TIG-welded for extreme durability, ensuring they withstand any abuse.
• Upgraded Core Design – Swaps the fragile Tube & Fin core for a heavy-duty Bar & Plate core, making it far more impact-resistant in case of a front-end scrape or bottom-out.
• 33% Larger Core – Features three additional rows of oil cooling and a thicker 60mm core (vs. OEM 45mm core) for improved heat dissipation.
• TIG-Welded End Tanks – Stronger and more durable than the factory’s brazed construction, reducing the risk of leaks.

With enhanced cooling performance, increased durability, and precision engineering, CSF’s new High-Performance Engine Oil Cooler is the perfect solution for S63 owners pushing their cars to the limit.

• Applications:
  • 2012-2016 BMW F10 M5 (incl. Competition)
  • 2012-2018 BMW F1X M6 (incl. Competition)
  • 2013-2019 BMW F06 M6 (incl. Competition)
  • 2017-2023 BMW F90 M5 (incl. Competition)
  • 2020+ BMW F9X M8 (incl. Competition)
  • 2019+ BMW G1X M850i xDrive

• OEM Part Numbers:
  • BMW: 17212284260
  • BMW: 17228746756