Koyo HH063146 HH Series All-Aluminum Racing Radiator - 48mm

The Koyo HH063146 is a high-performance all-aluminum racing radiator featuring hand-welded construction and full brazing with an over 40% increase in core thickness compared to OEM radiators. Built with a robust 48mm core thickness, this radiator is engineered for serious performance tuners and delivers exceptional cooling capacity for both spirited street driving and track use.

Key Features:

• High-density Koyorad Hyper 1.9" core boosts cooling system heat capacity and endurance
• Hand-assembled core, Nocolok brazed, then TIG welded by hand with aircraft-quality aluminum
• Ultra-high fin density design maximizes heat transfer efficiency
• Up to 35% increased cooling performance and double the coolant capacity over stock radiators
• Direct bolt-in installation retaining original mounting provisions and OEM fan shroud compatibility
• Includes M12 x 1.25 provision for low coolant sensor on top tank center
• Billet aluminum filler neck and 1/8" NPT female accessory fitting
• Triple pressure tested for quality assurance

Koyorad quality results from privately owned factories that allow Koyorad Japan to oversee each stage of radiator production, ensuring quality is never sacrificed for quantity. This all-aluminum construction provides superior heat dissipation and durability compared to traditional copper-brass radiators, making it an ideal upgrade for performance applications.