AP Exhaust 643074 Catalytic Converter - Left

OE-Fit Catalytic Converter for Tundra

AP Exhaust 643074 is a Federal / EPA direct-fit catalytic converter built for the left side of select Toyota Tundra applications. It uses a stainless steel body, a ceramic substrate, and OE-style flange connections to match factory dimensions and exhaust routing.

For 2007-2011 Toyota Tundra left-side applications, this converter is built to align with direct-fit replacement needs while supporting proper exhaust flow and emissions system function. AP Exhaust 643074 is also cross-referenced to 17450-0F130 for the same application.

Key Features

• Federal / EPA direct-fit catalytic converter
• Stainless steel body for corrosion resistance
• Ceramic substrate material
• Built with 3-bolt welded inlet flange and 2-bolt welded outlet flange
• Includes inlet gasket and outlet gasket
• Two O2 sensor ports
• Overall length: 49 inches
• OE-dimensioned fitment for select Toyota Tundra left-side applications

Detailed Description

AP Exhaust 643074 is engineered for direct replacement on select Toyota Tundra models with left-side fitment. The converter uses AP Emissions Technologies’ ARISTO substrate chemistry and automated manufacturing processes to support consistent dimensions, accurate fitment, and efficient catalyst loading. The stainless steel shell and ceramic substrate are specified for emissions-system service where factory-style geometry and connection points matter.

This part fits 2007-2011 Toyota Tundra, left, and also fits 2007-2010 Toyota Tundra, left, for 145.7-inch wheelbase applications. It is intended for Federal and California emissions configurations, with state-use restrictions noted by the manufacturer for CA, CO, ME, and NY. AP Exhaust 643074 is a practical OE-style replacement when restoring exhaust performance on a Toyota Tundra.

What It Helps Address

• Check engine light concerns related to catalytic converter efficiency
• Restricted exhaust flow from a worn or damaged converter
• Exhaust leaks at flange connection points
• Emissions test failures tied to converter performance
• Fitment issues from non-direct replacement exhaust parts

Installation Notes

• Verify left-side application, model year, and wheelbase before installation.
• Confirm emissions compliance for your vehicle and state before use.
• Inspect mating surfaces, O2 sensor ports, and flange alignment during installation.
• Use the included inlet and outlet gaskets as part of a proper seal check.
• Follow factory service procedures for sensor transfer and exhaust torque specifications.

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 design is used to support efficient catalyst loading and consistent manufacturing output.