Universal catalytic converter: All products have satisfied EPA emission standard and Euro 2, 3 and 4 Material: stainless steel Rated volume: 3.8L/4.250lbs TWCat001 Inlet/outlet: 1.75, 2, 2.25, 2.5, 2.75 and 3-inch Lower burning temperature: CO: not below 241centidegree HC: not below 246 centidegree NO2: not below 264 centidegree Higher conversion efficiency: CO: is more than 96% HC: is more than 95% NO2: is more than 90% Good function of anti-poisoned and aging Small motive loss: less than 3% Decline sound: 2 to 3dBA Long service life, after 43 minutes super voice wave clean, catalyst sheds off is not more than 2 Structure is simple Service lifespan: 80,000 km High dispersion of precious metal Low light-off temperature Excellent oxygen storage ability wide span Good performance against high temperature Reduces emission of CO, HC and NOx by up to 98% Can be provided in a standard or custom configuration Advanced washcoat technology: rare-earth base noble metal catalyst. length/width/height:15"*5.2"*3.7".