Eastern Convertors 50574 Catalytic Converter

Direct-Fit Catalytic Converter for HD Trucks

Eastern Convertors DIRECT FIT 50574 is a Federal / EPA direct-fit catalytic converter built for exact OE dimensions and fitment. It uses a stainless steel body, a ceramic substrate, and NANO substrate chemistry to support efficient exhaust flow and emissions control on select Chevrolet Silverado HD and GMC Sierra HD applications.

Key Features

• Direct-fit Federal / EPA catalytic converter
• Stainless steel body for corrosion resistance
• Ceramic substrate with advanced NANO substrate chemistry
• 59-inch overall length
• 3-bolt welded flange inlet and 3-bolt loose flange inlet configuration
• 2-bolt welded flange outlet
• 4 O2 sensor ports
• Outlet hardware included

Fitment Details

• Fits 2018-2019 Chevrolet Silverado 2500 HD, Federal and California Emissions; Direct Fit Converter
• Fits 2018-2019 Chevrolet Silverado 3500 HD, Federal and California Emissions; Direct Fit Converter
• Fits 2018-2019 GMC Sierra 2500 HD, Federal and California Emissions; Direct Fit Converter
• Fits 2018-2019 GMC Sierra 3500 HD, Federal and California Emissions; Direct Fit Converter
• Fits 2011-2017 Chevrolet Silverado 2500 HD, With 3 Converter System; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
• Fits 2011-2017 Chevrolet Silverado 3500 HD, With 3 Converter System; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
• Fits 2011-2017 GMC Sierra 2500 HD, With 3 Converter System; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
• Fits 2011-2017 GMC Sierra 3500 HD, With 3 Converter System; Undercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT

What This Converter Helps Address

• Failed catalytic converter efficiency codes
• Exhaust restriction from a damaged or clogged converter
• Emissions test failure related to converter performance
• Rattling or broken internal substrate material
• Fitment issues when replacing an OE-style converter on HD trucks

Installation Notes and Tips

Verify emissions configuration before ordering. This part is listed for 2018-2019 Chevrolet Silverado 2500 HD and 3500 HD, plus 2018-2019 GMC Sierra 2500 HD and 3500 HD with Federal and California emissions, and for 2011-2017 Silverado and Sierra HD models with a 3-converter system and undercar layout. Confirm the inlet and outlet flange style, O2 sensor port count, and overall length against the original unit before installation. Part number 50574 is a direct-fit replacement, and 50574 should be matched to the exact vehicle emissions setup shown in the fitment data.

Quality Assurance

Eastern Convertors uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to OE dimensions and fitment standards. The DIRECT FIT line is engineered for consistent manufacturing quality, and the ceramic substrate with NANO substrate chemistry is used to support efficient converter loading and performance. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.