MagnaFlow 5531333 Catalytic Converter with Integrated Exhaust Manifold - Front

CARB-Compliant Direct-Fit Replacement

MagnaFlow 5531333 is a direct-fit catalytic converter with integrated exhaust manifold for select Honda Accord and Acura applications. Built with stainless steel construction, a ceramic substrate, and bolt-on connections, it is designed for a clean replacement on the front exhaust position without cutting or welding.

This MagnaFlow California Grade unit is engineered for 2003-2007 Honda Accord front applications and also covers 2004-2008 Acura TL and 2005-2008 Acura RL front fitments. The spun-body design, mandrel-bent tubing, and pre- and post-converter oxygen sensor locations support OE-style fitment and function.

Key Features

• Part number 5531333
• Direct-fit catalytic converter with integrated exhaust manifold
• Stainless steel converter body and tubing
• Ceramic substrate material
• 1 inlet, 1 outlet, bolt-on inlet and outlet
• 2 sensor ports with pre- and post-converter oxygen sensor locations
• Gasket and mounting hardware included
• CARB-compliant design for listed California and CARB-restricted applications

Product Details

MagnaFlow’s California Converters line focuses on emissions replacement parts built to match OE-style packaging and fitment. For this application, 5531333 uses a compact spun-body layout and laser-fused construction to reduce leak points while maintaining a direct replacement profile. The 14-inch overall length, 3.25-inch inlet diameter, 1.875-inch outlet diameter, and 2.375-inch main piping diameter reflect the OE-style configuration needed for the listed vehicles.

Compatible With 2003-2007 Honda Accord front, 2004-2008 Acura TL front, and 2005-2008 Acura RL front. This part cross-references OE numbers 18190-RGL-A00 and 18190-RN0-A01 for the same application.

Common Problems This Part Can Address

• Check engine light caused by a failed catalytic converter
• Emissions test failure on CARB-regulated vehicles
• Exhaust leaks at the manifold or converter seal
• Corrosion-related damage to the original exhaust assembly
• Poor OE-style fit from universal replacement parts

Installation Notes

Install using the proper tools and follow the vehicle-specific service procedure. No cutting or welding is required for the listed applications. The included gasket and mounting hardware help simplify installation and reduce the need to reuse corroded factory components. Verify sensor routing and OE part number interchange before installation on your Honda Accord, Acura TL, or Acura RL.

Quality Assurance

MagnaFlow uses 3D scanning during development to match original equipment dimensions and function. This replacement is built to meet or exceed California Air Resources Board requirements and has been tested for CARB compliance for legal use on the listed vehicles in California and other CARB-restricted states.