MagnaFlow CARB-Grade Direct-Fit Catalytic Converter - Ford Mustang 2004 4.6L

MagnaFlow CARB-Grade direct-fit catalytic converter (454018) for the 2004 Ford Mustang GT Mach 1 and SVT Cobra 4.6L. A 409 stainless steel spun body with mandrel-bent tubing and a single laser-fusion weld replicates the OE design for smooth flow and a leak-resistant seal; installs with no cutting or welding and includes (4) O2 port plugs (1) flange gasket (2) Torca clamps and (4) nuts. Designed to meet CARB requirements for legal use in California and CARB states.

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