The S54 is an incredible feat of engineering. Smooth power delivery, individual throttle bodies, and an 8,000 rpm redline makes for an unforgettable driving experience. As with any BMW, maintenance is key to extending the life of your vehicle and ensuring that you're getting a driving experience rivaled by very few other vehicles on the road. As many of these vehicles see frequent track time, the team at Mishimoto felt a need to develop a performance aluminum radiator that would not only provide improved durability, but also deliver the efficiency needed for track driving. Our team of engineers developed an extremely dense core that provides a greater number of coolant tubes and a very dense fin composition. This allows for more heat transfer contact points which results in greater heat exchange and improved efficiency. Additionally, this dense core provides a 32 percent increase in coolant surface area, a 15 percent increase in air surface area, and a 25 percent increase in coolant capacity. All of these factors will contribute to lower temperatures and greater heat rejection, ideal for those in warm climates and track use.