SpeedFactory Air-to-Air Intercooler Cores feature bar and plate core construction with a very specific staggered fin combination that is engineered to achieve maximum cooling efficiency while minimizing pressure drop. The overall strength and durability of our intercooler core designs makes them capable of efficiently handling even the most extreme, high boost level racing applications. Deliver significantly cooler, denser air to your engine with a performance proven SpeedFactory Racing Intercooler Core. SF-06-091 (24 x 12 x 3) Air to Air Intercooler Core Specifications: Core Width: 24.0" Core Height: 12.0" Core Thickness: 3” Approximate HP Rating: 600-850 Staggered Fin Bar and Plate Construction SF-06-092 (24 x 12 x 3.5) Air to Air Intercooler Core Specifications: Core Width: 24.0" Core Height: 12.0" Core Thickness: 3.5” Approximate HP Rating: 850-1,000 Staggered Fin Bar and Plate Construction SF-06-096 (24 x 12 x 4.5) Air to Air Intercooler Core Specifications: Core Width: 24.0" Core Height: 12.0" Core Thickness: 4.5” Approximate HP Rating: 1,000-1,200 Staggered Fin Bar and Plate Construction