CSF has been at the forefront of pushing the performance limits of the S63 engine with its Twin Charge Air Coolers. Today, many M5, M6, and M8 models are exceeding 1000HP, but with greater power comes increased heat. As power levels rise, so do oil temperatures, with some owners experiencing temperatures surpassing 240°F (115°C) during intense track sessions. As these M cars continue to age and power thresholds are pushed further, factory cooling systems are struggling to keep up. To address this challenge, CSF partnered with Carbahn to develop a direct-fit solution for both platforms. Engineered to manage the extreme heat generated by Carbahn’s new S63 Stroker Kit, this oil cooler is designed for peak performance and reliability. But enhanced performance isn’t the only reason to upgrade. Many F1X and F9X owners have had to replace their oil coolers due to leaks and damage, primarily caused by their exposed mounting position—a problem worsened by lowered suspension setups. A stronger, more durable design was needed to resolve these issues. Whether your M5, M6, or M8 is a daily driver, weekend cruiser, or dedicated track machine, upgrading the oil cooler is a smart investment. Tuned S63s, especially those with upgraded turbos, produce significantly more heat, making efficient cooling even more critical. Excessive oil temperatures can quickly trigger limp mode and, in extreme cases, cause catastrophic engine failure. CSF’s new High-Performance Engine Oil Cooler isn’t just about optimizing performance—it’s a preventative upgrade that helps avoid costly repairs and extends your engine’s lifespan.
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Crank the boost without worrying about heat. CSF’s Charge-Air-Coolers for the G9X M5 are designed to keep intake temperatures under control, even when you’re hammering the throttle. Featuring upgraded cores, refined end tanks, and precision TIG-welded construction, these coolers flow more air and dissipate more heat than stock units—keeping your S63 consistent on the street, strip, or track. Why choose CSF charge-air-coolers? Enhanced cooling performance – Dense bar-and-plate cores efficiently lower intake temps. Built for serious boost – Fully TIG-welded, pressure-tested, and race-ready construction. Direct fitment for G9X M5 – Replaces factory coolers with OE-style connections. Reliable power delivery – Minimizes heat soak to maintain stable horsepower run after run. For cooler intake temps, stronger power, and dependable S63 performance, CSF’s 8351 charge-air-coolers are the ultimate upgrade.
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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