AP Exhaust 643081 Catalytic Converter

Direct-Fit Catalytic Converter for Toyota Yaris

AP Exhaust Direct Fit Converter 643081 is a Federal / EPA direct-fit catalytic converter built for precise OE-style fitment on select Toyota Yaris applications. It uses a ceramic substrate and stainless steel body construction to support efficient exhaust flow and emissions control in a direct replacement format.

Key Features

• Federal / EPA direct-fit catalytic converter
• Stainless steel body for corrosion resistance
• Ceramic substrate material
• 2-bolt welded flange inlet and outlet design
• Includes inlet gasket and outlet gasket
• 1 O2 sensor port
• Overall length: 86.5 inches
• AP Exhaust Direct Fit Converter line focuses on OE-dimensioned replacement converters for accurate fitment

Fitment Details

• Fits 2015-2017 Toyota Yaris, Federal and California Emissions; Direct Fit Converter.
• Fits 2014 Toyota Yaris, Direct Fit; Japan-built only; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY. Aftermarket is a 2-piece design.
• Fits 2012-2014 Toyota Yaris, Direct Fit; Complete Assembly; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY.
• Fits 2012-2013 Toyota Yaris, Direct Fit; Federal and California Emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY. Aftermarket is a 2-piece design.

What This Part Helps Address

• Failed or inefficient catalytic converter operation
• Exhaust restriction caused by a damaged converter core
• Check engine light concerns related to catalyst efficiency
• Exhaust leaks at flange connections when the original unit is worn
• Fitment issues from a converter that no longer matches OE dimensions

Installation Notes

Verify the vehicle’s emissions configuration, build origin, and state restrictions before ordering. This converter uses 2-bolt welded flange connections with gasket stubs and includes inlet and outlet gaskets, but no inlet or outlet hardware is listed. Confirm the single O2 sensor port location and compare the original assembly to the 86.5-inch overall length before installation. Part number 643081 cross-references 17410-21B00 for the same application.

Quality Assurance

AP Exhaust uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to exact OE dimensions and fitment. The ARISTO substrate chemistry is engineered for efficient loading and converter performance while supporting competitive replacement value.