Davico 19021 Catalytic Converter - Front

Exact-Fit Catalytic Converter for Heavy-Duty GM Trucks

Davico Part Number 19021 is an Exact-Fit Catalytic Converter built for specific Chevrolet and GMC front exhaust applications. It is engineered from original equipment sample parts to match fitment and function on OBDII-equipped vehicles, with a high-quality emissions-reducing catalyst and included gaskets.

Key Features

• Exact-Fit Catalytic Converter design for direct replacement fitment
• Fits front exhaust positions on select Chevrolet and GMC heavy-duty trucks and Suburban models
• Gaskets included for the listed application
• 3-bolt spin flange inlet connections, 2.5-inch inlet size
• 2-bolt fixed flange outlet design
• 47-inch overall length for OE-style dimensional match
• Built for OBDII vehicle emissions requirements
• Use Davico Decarbonizing Induction Kit 1540ea

Detailed Description

Davico Exact-Fit Catalytic Converters are designed using original equipment sample parts to help ensure proper fit and function. Part 19021 is made for front exhaust placement on select Chevrolet C2500, Chevrolet C2500 Suburban, Chevrolet C3500, Chevrolet K2500 Suburban, GMC C2500, GMC C2500 Suburban, GMC C3500, GMC K2500, GMC K2500 Suburban, GMC K3500, and Chevrolet K3500 applications. The converter uses a 3-bolt spin flange inlet on both sides, a 2-bolt fixed flange outlet, and a 47-inch overall length to match the listed vehicle configuration.

This part number 19021 is intended for heavy-duty trucks and Suburban models with the specified front converter layout. It is a practical OE-style replacement for drivers searching for a front catalytic converter for 1996-2000 Chevrolet K3500, 1996-1999 GMC C2500 Suburban, or 1999-2000 GMC K2500 applications with the listed flange and length requirements.

What It Helps Address

• Failed catalytic converter efficiency codes
• Restricted exhaust flow from a worn or damaged converter
• Emissions test failures related to converter performance
• Exhaust leaks at flange connection points
• Fitment issues when replacing the original front converter assembly

Installation Notes and Tips

• Verify the 47-inch overall length before installation.
• Check inlet flange bolt-hole spacing; the notes specify 3-1/4 inches center to center, not 3 inches.
• Confirm the vehicle has the correct front converter configuration and oxygen sensor port near the outlet flange.
• Review local emissions rules before purchase; this part is not legal for use in California and is illegal for installation in New York on vehicles equipped with California emission systems.
• Use Davico Decarbonizing Induction Kit 1540ea as noted by the manufacturer.

Quality Assurance

Davico builds the Exact-Fit Catalytic Converter line from OE sample parts and uses emissions-reducing catalyst material selected for current OBDII vehicle demands. Part 19021 is designed to deliver the specified fitment and emissions-control function for the listed Chevrolet and GMC applications.