Koyorad is pleased to introduce a high quality direct replacement all-aluminum performance radiator for 6MT & SMG E46 M3. This application features Koyorad's “HH Series” 48mm radiator core which was developed to increase coolant volume, promote proper air flow and coolant circulation. In typical fashion, Koyorad has engineered this radiator with precision, directly replacing the stock OEM plastic/aluminum radiator and will bolt easily to the factory equipped fan shroud for a quick and simple installation.
Precise Tube and Fin Alignment
Construction under strict quality control and solid boxing result in tubes with optimal coolant flow and fins with highly efficient heat transfer.
Nocolok Brazing
Tubes, Fins, Headers and Brackets are brazed in a state-of-the-art Nocolok furnace, bonding all components to resist damage from vibration, road debris, and the elements.
billet filler neck
Billet Filler Neck
Precision machined billet filler necks are incorporated on each Koyo radiator for strength, durability and better sealing.
OE Specific Mounting and Hand Crafted Heliarc Welds
Koyo incorporates application specific mounting locations for all fan shrouds, inlet/outlet hoses and top/bottom mounting pins, ensuring quick and pain-free installs. Each Koyo All Aluminum Race Radiator is Heliarc welded individually by hand. This creates the strongest aluminum to aluminum bond, to mate all components.
Koyorad’s superior quality, precision hand welds, reliability and uniformity are what have earned Koyorad their excellent reputation in performance radiators worldwide.
Vehicles Supported
BMW E46 M3
