Which OE part numbers does this replace?

MagnaFlow 5582705 interchanges with Ford OE parts 4L3Z-5E212-GC and 4L3Z-5E212-GD. It uses the same mounting points and pipe geometry as the factory converter.

Is this legal in California?

Yes. This is a CARB compliant catalytic converter legal for sale and use in all 50 states including California. Your vehicle's Executive Order number and Engine Family Number must appear in this converter's CARB Executive Order for legal installation.

Does this come with gaskets or hardware?

Refer to the included contents in your specific shipment. The description notes this as a direct-fit bolt-on unit. If gaskets are not included, source replacement exhaust gaskets separately to ensure a proper seal.

2004 Ford F-150 5.4L Catalytic Converter

Name: Magnaflow 2004 Ford F-150 5.4L Direct Fit Converter
Brand: Magnaflow
SKU: magnaflow-magnaflow-2004-ford-f-150-5-4l-direct-fit-converter-t14-817057
Price: 3110.00 USD
Availability: BackOrder

Magnaflow 2004 Ford F-150 5.4L Direct Fit Converter

$3110.00

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2004 Ford F-150 5.4L. MagnaFlow CARB compliant direct-fit catalytic converter that replaces OE parts 4L3Z-5E212-GC and 4L3Z-5E212-GD.

Key Features

Direct fit for 2004 Ford F-150 5.4L -- bolt-on installation
CARB compliant and legal in all 50 states including California
Interchanges with OE parts 4L3Z-5E212-GC and 4L3Z-5E212-GD
16-gauge 409 stainless steel tubing
Mandrel-bent piping matches factory exhaust geometry
Spun body with single laser fusion weld

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Moderate difficulty to install

Direct-fit bolt-on design with no cutting or welding required.

Product Details

If your 2004 Ford F-150 5.4L needs a catalytic converter replacement that passes California emissions standards, MagnaFlow 5582705 is a direct-fit unit built specifically for this application. It interchanges with OE parts 4L3Z-5E212-GC and 4L3Z-5E212-GD, so it drops into the factory location without modification.

MagnaFlow constructs this converter with 16-gauge 409 stainless steel tubing and mandrel bends that follow the OE pipe path. Their 3D scanning development process ensures the flanges and hanger locations match the factory exhaust layout. The spun body uses a single laser fusion weld, and 308 stainless steel MIG welds secure the pipe connections. No cutting or welding is required -- this is a bolt-on replacement.

This is a CARB compliant converter, legal for sale and use in all 50 states including California. Before installing, verify that your F-150's Executive Order number and Engine Family Number appear in this converter's CARB Executive Order. The 2004 F-150 was the first year of the eleventh generation, so make sure your specific engine and cab configuration match the application data for this part number.