OSC Premium New Automotive Heater Cores are designed to Original Equipment's (OE) form and function. OSC Heater Cores are technically advanced and manufactured from premium grade Aluminium. The tubes feature Cadmium Plating both inside and out to prevent premature failure. Each heater core is individually pressure tested. All necessary foam and accessories are included in each unit. NOTE: All OSC Heater Cores are made from Aluminium. They are a direct replacement for a copper designed Heater Core.