Davico 17551 Catalytic Converter - Rear

Exact-Fit Catalytic Converter

Davico 17551 is an exact-fit catalytic converter built for direct replacement on the specified application. It uses OE sample parts as the basis for fit and function, with an emissions-reducing catalyst formulated for OBDII vehicle demands.

Key Features

• Exact-fit design based on original equipment sample parts
• Emissions-reducing catalyst for OBDII vehicle requirements
• 2-bolt fixed flange inlet and outlet for a secure exhaust connection
• Gaskets included for the installation interface
• Includes one O2 sensor provision
• 34-inch overall length

Detailed Description

This Davico catalytic converter is engineered as a direct replacement for the rear exhaust application on 2011-2013 Toyota Sienna models. The 17551 part number identifies an OE-style converter built to match the original fit and function expectations of the vehicle’s exhaust system while supporting emissions control. Davico 17551 is a practical choice when replacing a worn or inefficient converter on a Toyota Sienna, especially where exact flange style and sensor count matter.

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

What It Is Used For

• Replacing a restricted or failed catalytic converter
• Restoring exhaust flow after catalyst deterioration
• Addressing emissions-related fault codes tied to converter efficiency
• Correcting exhaust leaks at the flange connection points
• Maintaining proper OBDII emissions system operation

Installation Notes and Tips

Compatible With 2011-2013 Toyota Sienna, rear. Verify the exhaust flange style, O2 sensor count, and overall length before installation. This application is noted as not legal for use in California and is illegal for installation in New York on vehicles equipped with California emission systems. Confirm all emissions compliance requirements before ordering or installing part number 17551.

Quality Assurance

Davico Exact-Fit Catalytic Converters are built from OE sample parts to support proper fit and function, with catalyst materials selected for current OBDII emissions demands. Part number 17551 is engineered as an OE-style replacement for the listed application.