The Mishimoto 335i/335xi/135i radiator features all-aluminum construction with TIG-welded end tanks to a 100% brazed aluminum core and CNC-machined quick-disconnect inlet and outlet connections. This radiator is constructed from high-quality aircraft aluminum with a brushed finish for the perfect combination of performance and style. The Mishimoto 335i/335xi/135i radiator is precision engineered for flawless drop-in fitment while providing a 35% increase in coolant capacity. This radiator also includes a Mishimoto Magnetic Drain Plug with dowty seal, which removes circulating metal fragments from the cooling system, providing further engine protection.