MagnaFlow 5531343 Catalytic Converter with Integrated Exhaust Manifold

California-grade direct-fit converter

MagnaFlow 5531343 is a direct-fit catalytic converter with integrated exhaust manifold for select Honda Civic and Acura ILX applications. It is built with stainless steel construction, a ceramic substrate, and a spun-body design to match OE-style fitment and function.

Designed for California emissions compliance on listed vehicles, this MagnaFlow California Converters part helps maintain proper exhaust flow while supporting a clean installation with no cutting or welding required.

Key features

• Direct-fit catalytic converter with integrated exhaust manifold
• Stainless steel body, tubing, and finish for corrosion resistance
• Ceramic substrate material
• OE-style spun body design with laser fusion weld construction
• Mandrel-bent tubing for smooth exhaust routing
• Mounting hardware included
• Overall length: 11.5 inches
• CARB-compliant for listed California and CARB-restricted applications

Fitment and application details

Compatible with 2006-2013 Honda Civic and 2013-2014 Acura ILX applications listed in the fitment data. This part also cross-references OE numbers 18160-RNA-A00 and 18160-RNE-A00 for the same application. Use MagnaFlow 5531343 when replacing the factory exhaust manifold and catalytic converter assembly on the specified Honda Civic and Acura ILX vehicles.

The MagnaFlow California Converters line is built for direct replacement applications where emissions compliance, OE-style geometry, and durable stainless construction matter. Part number 5531343 is engineered from 3D-scanned reference data to match original equipment dimensions and reduce installation issues on the listed vehicles.

What this part helps address

• Check engine light concerns related to catalytic converter efficiency
• Failed emissions inspection on listed California-compliant applications
• Corrosion damage to the factory manifold/converter assembly
• Exhaust leaks at the manifold or converter connection points
• Poor fitment from non-direct replacement exhaust parts

Installation notes and tips

Install using the proper tools and follow the vehicle-specific service procedure. This direct-fit design does not require cutting or welding, and the included mounting hardware helps avoid reusing corroded factory fasteners. Verify the vehicle’s emissions certification, engine family, and OE part number before installation to confirm the correct application.

Quality assurance

MagnaFlow uses 3D scanning and metrology during development to verify fit and function against original equipment. This replacement is built to meet or exceed California Air Resources Board requirements for the listed vehicles and has been tested for CARB compliance where applicable.