MagnaFlow Underbody Catalytic Converter - Honda Civic Hybrid 2006-2011

The MagnaFlow 23004 is a direct-fit underbody catalytic converter that restores factory emissions performance and keeps the check engine light off. It uses a spun OE style body sealed by a single laser fusion weld to reduce leak points, 16 gauge 409 stainless steel mandrel-bent tubing, and 410 stainless barbed hangers for a low-mass, thermally efficient design. Installation is bolt-on with the included gaskets and hardware, no cutting or welding required. It interchanges with OE part 18160-RMX-A00.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy