Add some much needed durability and cooling power to your M3 or M4 with the Mishimoto 2015-2020 BMW M3/M4 Performance Oil Cooler. True to form, the engineers at BMW designed the M3/M4's oil cooler with an efficient use of space in mind. Suspended perpendicular from the rest of the cooling stack, this location utilizes the Bimmer's aerodynamics in order to cool the oil, all while putting the light weight, tube-and-fin cooler in harms way of road hazards. We here at Mishimoto made sure to beef up the oil cooler design for the F80/82 with our performance oil cooler. We ditched the lightweight design for a full aluminium, TIG-welded bar-and-plate cooler for added strength and cooling. The bars and plates are a much more robust form of heat exchanger core construction intended for improved heat transfer and have the strength to shrug off potential road debris, keeping your oil temps down, and where It'should be. We also added 10mm to the core?s thickness, equating in a 46-percent increase in core volume and increased the oil capacity by .4 qt. The Mishimoto 2015-2020 BMW M3/M4 Performance Oil Cooler fits directly in place of the stock unit, and includes the Mishimoto Lifetime Warranty for a simplified and worry-free installation.