【VEHICLE FITMENT】 Our Catalytic Convertor Fit for Chevy Silverado 2500 HD 2011-2017 6.0L V8, Chevrolet Silverado 3500 HD 2011-2017 6.0L V8, GMC Sierra 3500 HD 2015-2017 6.0L V8, GMC Sierra 2500 HD 2016-2017 6.0L V8 【DIRECT-FIT DESIGN】 Our Catalytic Converters are design-validated for assured fit.Made of high quality Stainless Steel material, sturdy, durable, high temperature resistant, and durability durable Catalyst material 【HIGH FLOW PERFORMANCE】 Our Catalytic Converters are precisely-built to meet OEM specifications and have EPA certification. High flow design to provide more oxygen to your engine for an increase in power and performance 【ATTENTION】 This item can be used in most places except CA, CO, NY or ME. Not for Use in California, Maine, Colorado or New York Registered Vehicles, please confirm before purchase 【EPA COMPLIANT】 The direct-fit catalytic converters are compliant with EPA Standards but not with CARB. ABYSMAUTO offers a 50,000 miles limited warranty, for any manufacturer defect Our catalytic converters are accurate in size, Easy to Replace, No drilling. With superior substrate materials and high-tech coating to ensure superior oxygen storage capacity, origin expertise provides application engineering software made of high quality stainless steel, strong, wear resistant, high temperature resistant. We only supply high-quality auto parts.