Koyo Aluminum Racing Radiator S14/S15 SR20DET

The Koyo Aluminum Racing Radiator for Nissan S14 and S15 equipped with the SR20DET engine is engineered to deliver superior cooling performance with precision fitment. Featuring Koyorad’s “HH” Series 48mm Hyper Core, this radiator core incorporates an ultra-high fin density designed to maximize heat transfer efficiency, helping to maintain optimal engine temperatures under demanding conditions.

Manufactured with meticulous attention to detail, each radiator is hand assembled in Koyorad’s privately owned factories in Japan, ensuring strict quality control throughout the production process. The core undergoes Nocolok brazing and is finished with hand TIG welding using premium aluminum materials, resulting in a durable and reliable cooling solution that meets or exceeds OE standards.

Designed as a direct-fit replacement for the stock OE plastic/aluminum radiator, installation is straightforward and requires no modifications. It includes OE-specific mounting points to facilitate a quick and secure fitment to Nissan S14 and S15 chassis.

Key Features

• 48mm “HH” Series Hyper Core for enhanced cooling capacity
• Direct-fit design with OE-specific mounting points for Nissan S14 and S15 models
• Hand-assembled with precise tube and fin alignment to maximize airflow and heat dissipation
• Nocolok-R brazing process for superior joint strength and corrosion resistance
• Billet aluminum filler neck for added durability
• Integrated 1/8″ NPT female accessory fitting with threaded plug, compatible with aftermarket temperature sensors

This Koyo radiator upgrades your vehicle’s cooling system with a high-quality, race-inspired core that supports consistent engine performance and reliability. It’s the ideal replacement for S14 and S15 Nissan enthusiasts seeking a robust and efficient cooling component tailored for the SR20DET engine.