Stainless Steel Sport Catalyst with Metal Insert for maximum 2000 cm3 CarsCatalysts are available in various cell densities.400 CPSi catalysts are typically used in gasoline production cars, 200 CPSi in diesel engines, while 100-200 CPSi sport catalysts are better for sports or tuned cars for optimal exhaust gas flow.CPSi - cells per square inch: cell density in the catalyst.We offer both ceramic and metal insert catalysts. The metal insert has higher heat resistance, withstanding up to 1300°C, while ceramic can withstand up to 850°C. Metal inserts are generally more expensive.Dimensions:Diameter: 50mmLength: 225-233mmWidth/Height: 112mmEmission Standards:DIESELEURO 1: 07/1992EURO 2: 01/1996EURO 3: 01/2000EURO 4: 09/2005EURO 5: 2009-2014GASOLINEEURO 1: 07/1992EURO 2: 01/1996EURO 3: 01/2000EURO 4: 01/2005EURO 5: 2009-2014