CSF Bar & Plate Intercooler Cores are used by some of the most renowned tuning and performance companies in the industry. This 18" x 12" x 4.5" Horizontal Flow Core is rated for 1000 WHP and the perfect fit for your custom high-performance intercooler. Each CSF Intercooler core is pressure tested at 120psi for maximum reliability in extreme boost applications. Hand-Built using jigs & fixtures for a perfectly straight core in a clean room using gloves inside the CSF factory to ensure proper brazing and a clean surface for future welding. Featuring a multi-louvered high precision staggered fin design (for both ambient and pressure sides of the core) for the best heat transfer possible.