Good news, the new G35, 350Z, NSX, and Evo X radiators are now in stock ready to ship. Koyo Radiators are designed and manufactured to original equipment (OE) specifications. They come fully polished to a mirror finish and provide 20% to 30% more cooling than standard radiators. The Koyo radiator is produced from aircraft quality aluminum and Heli-arc welded. Heli-arc welding is the highest quality standard for reinforcement along aluminum connections. These Koyo Radiators are perfect for Turbocharged, Super Charged, and Nitrous Oxide equipped engines.