Davico 19721 Catalytic Converter - Left

Exact-Fit Catalytic Converter for OBDII Vehicles

Davico Exact-Fit Catalytic Converter 19721 is built from original equipment sample parts to match the factory layout and emissions requirements on the listed applications. It is designed for direct replacement on the left side of select Chevrolet Colorado, GMC Canyon, Hummer H3, and Hummer H3T models.

The Davico Exact-Fit Catalytic Converter line focuses on OE-style fit and function, using a high-quality emissions-reducing catalyst formulated for current OBDII vehicle demands. Part number 19721 is a direct-fit exhaust replacement for drivers who need a converter that follows the original mounting and sensor configuration.

Key Features

• Exact-Fit Catalytic Converter design based on original equipment sample parts
• Fits the left position on the listed vehicles
• 3-bolt fixed flange inlet for factory-style connection
• Slip fit outlet for direct exhaust integration
• Includes gaskets
• Configured for 2 O2 sensors
• Overall length: 45 inches
• Davico part number 19721

Vehicle Fitment

• Fits 2009-2012 Chevrolet Colorado, left
• Fits 2009-2012 GMC Canyon, left
• Fits 2008-2010 Hummer H3, left
• Fits 2009-2010 Hummer H3T, left

Detailed Description

Davico 19721 is an OE-style catalytic converter engineered for direct replacement on the specified left-side exhaust applications. The factory-style 3-bolt fixed flange inlet, slip fit outlet, and included gaskets support a cleaner installation path when replacing a worn or damaged converter on a Chevrolet Colorado, GMC Canyon, Hummer H3, or Hummer H3T. The unit is built around an emissions-reducing catalyst intended to meet the needs of OBDII-equipped vehicles while maintaining the original fitment profile.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Replacement Reasons

• Check engine light related to catalytic converter efficiency
• Failed emissions inspection caused by converter deterioration
• Exhaust leaks at the converter flange or outlet connection
• Rattling or damaged internal catalyst substrate
• Restricted exhaust flow from a worn converter

Installation Notes and Tips

Verify the vehicle’s emissions certification before installation, since 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 left-side application, O2 sensor count, inlet style, and outlet style before beginning the repair. Because this converter is built to OE sample parts, it is intended to align with the original exhaust routing on the listed vehicles.

Quality Assurance

Davico designs its Exact-Fit Catalytic Converter line from original equipment sample parts to support proper fit and function on the specified vehicle applications. Part number 19721 uses a high-quality emissions-reducing catalyst for OBDII vehicle requirements and follows the factory-style configuration for the listed models.