MagnaFlow 4551406 Catalytic Converter - Right

California OBDII Direct-Fit Converter

MagnaFlow 4551406 is a California Grade CARB-compliant direct-fit catalytic converter for the right side of select 2003-2004 Toyota Tundra applications. It is built with stainless steel construction, a ceramic substrate, and bolt-on inlet and outlet connections for a direct replacement on the listed vehicle.

The MagnaFlow Direct-Fit CALIFORNIA OBDII CONVERTERS line is engineered for OE-style replacement fitment, using 3D scanning during development to match original dimensions and function. For the 2003-2004 Toyota Tundra, this part number 4551406 interchanges with OE part 17410-0F030.

Key Features

• Direct-fit catalytic converter for specific 2003-2004 Toyota Tundra right-side applications
• California Grade CARB-compliant design for listed vehicles in California and CARB-restricted states
• Stainless steel body and tubing for corrosion resistance
• Ceramic substrate with compact, low-mass spun-body construction
• Mandrel-bent tubing and single laser fusion weld design
• Bolt-on inlet and outlet connections for straightforward replacement
• Gaskets included for sealing at installation
• Part number 4551406 cross-references OE 17410-0F030

Detailed Description

MagnaFlow 4551406 is a direct-fit catalytic converter designed for the right side of the 2003-2004 Toyota Tundra. It uses a spun-body layout that mirrors OE packaging, with stainless steel construction and a ceramic substrate to replace the original converter on the listed engine families and certification levels. The compact design supports thermal efficiency, while the single laser fusion weld helps reduce leak points compared with multi-piece assemblies.

This MagnaFlow California OBDII converter is built for vehicles that require CARB-compliant emissions equipment. If you are replacing a worn or failed converter on a Toyota Tundra, part number 4551406 provides an OE-style bolt-on solution with the correct fitment for the listed right-side applications.

What It Helps Address

• Check engine light caused by catalytic converter efficiency faults
• Failed emissions inspection due to converter performance issues
• Exhaust leaks at the converter connection points
• Corrosion-related damage to the original converter housing
• Fitment problems from non-OE-style exhaust replacements

Installation Notes

Fits 2004 Toyota Tundra, right. Fits 2003 Toyota Tundra, right. Use the included gaskets to help achieve a proper seal. This converter installs with bolt-on connections and does not require cutting or welding when used on the listed application. Verify engine family, certification level, and OE part number before installation to confirm the correct right-side replacement.

Quality Assurance

MagnaFlow uses 3D scanning and OE-based development methods to verify fit and function during product design. This converter is built to meet or exceed California Air Resources Board requirements for the listed vehicles and is approved for legal use in California and other CARB-restricted states where applicable.