Davico 19412 Catalytic Converter - Center

Exact-Fit Catalytic Converter for Center Exhaust Service

Davico Part Number 19412 is an Exact-Fit Catalytic Converter built for center exhaust replacement on select GM and Buick applications. It is engineered from original equipment sample parts to match factory fit and function, with emissions-reducing catalyst material designed for current OBDII vehicle demands.

This Davico Exact-Fit Catalytic Converter is a direct replacement for the center position on the 2004 Buick Rainier, 2003-2004 Chevrolet Trailblazer EXT, 2003-2004 GMC Envoy XL, and 2004 GMC Envoy XUV with 129-inch wheelbase applications. Part Number 19412 is built around OE-style dimensions and flange layout for a precise exhaust connection.

Key Features

• Exact-Fit Catalytic Converter from Davico Exact-Fit Catalytic Converter line
• Fits center exhaust position on select Buick, Chevrolet, and GMC vehicles
• OE-sample-based design for factory-style fit and function
• High-quality emissions-reducing catalyst for OBDII-equipped vehicles
• Gaskets included
• Inlet 1: 3-bolt fixed flange
• Inlet 2: 3-bolt spin flange
• Outlet: 2-bolt fixed flange
• Four O2 sensor locations
• Overall length: 54.5 in.; height: 12.5 in.; width: 30 in.

Detailed Description

Davico 19412 is designed as an OE-style catalytic converter replacement for center exhaust service on the 2004 Buick Rainier, 2003-2004 Chevrolet Trailblazer EXT, 2003-2004 GMC Envoy XL, and 2004 GMC Envoy XUV. The Exact-Fit Catalytic Converter line uses original equipment sample parts to help ensure proper fitment and correct exhaust routing, while the catalyst is selected to meet the emissions demands of OBDII vehicles. This part cross-references no listed aftermarket part numbers in the provided data.

For buyers searching for a 2004 Buick Rainier center catalytic converter, a 2003-2004 Chevrolet Trailblazer EXT center catalytic converter, or a 2003-2004 GMC Envoy XL / 2004 GMC Envoy XUV center catalytic converter, Part Number 19412 provides the specified flange configuration and sensor count needed for the application.

What It Is Used For

• Replacing a worn, damaged, or restricted center catalytic converter
• Restoring proper exhaust flow on OBDII-equipped vehicles
• Addressing exhaust leaks at flange connections
• Replacing a converter with failed emissions performance
• Servicing center exhaust systems on long-wheelbase Rainier, Trailblazer EXT, Envoy XL, and Envoy XUV models

Installation Notes and Tips

Verify the vehicle’s emission certification before installation. This part is not legal for use in California and is illegal for installation in New York on vehicles equipped with California emission systems. Confirm the 129-inch wheelbase requirement before ordering. Use the included gaskets during installation, and match the inlet and outlet flange types to the existing exhaust system. Davico also notes use of Decarbonizing Induction Kit 1540ea with this application.

Quality Assurance

Davico builds Exact-Fit Catalytic Converters from OE sample parts and uses emissions-reducing catalyst material intended for modern OBDII vehicle requirements. Part Number 19412 is manufactured to support proper fitment and function on the listed Buick, Chevrolet, and GMC applications.