MagnaFlow 27403 Catalytic Converter

Direct-Fit Catalytic Converter for Honda and Acura

MagnaFlow 27403 is a direct-fit HM Grade catalytic converter built for specific Honda and Acura applications. It uses stainless steel construction, a ceramic substrate, and bolt-on inlet and outlet connections to replace the original converter without cutting or welding.

Key Features

• Direct-fit design for straightforward replacement on confirmed applications
• HM Grade Federal / EPA compliant construction for OBDII federally registered vehicles with Federal emissions systems
• Stainless steel body and tubing for corrosion resistance
• Spun-body style with a single laser fusion weld to reduce leak points
• Free-flowing mandrel-bent tubing for efficient exhaust flow
• Includes gaskets for proper sealing at the connections
• 1 midbed oxygen sensor port
• Fits 1999-2004 Honda Odyssey, 2000-2002 Honda Accord, 2001-2003 Acura CL, and 2002-2003 Acura TL

Product Details

This MagnaFlow HM Grade Direct-Fit catalytic converter is engineered around OE-style dimensions using 3D scanning during development to help ensure proper fitment and function. The compact, low-mass design supports thermal efficiency, while the stainless steel body and 2-inch main piping diameter provide a durable replacement for the factory exhaust component. Part number 27403 also cross-references OE numbers 18160-P8F-A10 and 18160-P8F-305 for the same application.

Compatible vehicle coverage includes Fits 1999-2004 Honda Odyssey, N/A; Fits 2000-2002 Honda Accord, N/A; Fits 2001-2003 Acura CL, N/A; and Fits 2002-2003 Acura TL, N/A. It also fits 1998-1999 Honda Accord, N/A for California emissions equipped vehicles registered outside California. Use MagnaFlow 27403 when replacing a worn or failed converter on these Honda Accord, Honda Odyssey, Acura CL, or Acura TL applications.

What This Part Helps Address

• Check engine light caused by catalytic converter efficiency faults
• Exhaust leaks at the converter connection points
• Corrosion-related failure of the original converter body
• Restricted exhaust flow from a deteriorated converter
• Fitment issues from using a non-direct replacement part

Installation Notes

Install with the proper tools and follow the vehicle-specific service procedure. No cutting or welding is required on the confirmed applications. Use the included gaskets to help achieve a proper seal, and verify sensor placement at the midbed oxygen sensor port before final tightening. Confirm Federal/EPA emissions requirements and vehicle registration status before installation.

Quality Assurance

MagnaFlow develops this converter using 3D scanning and OE-style design replication to support fit and function on the listed vehicles. The HM Grade Federal / EPA compliant design is intended for legal use on federally registered OBDII vehicles with Federal emissions systems.