How does part 5582144 differ from 5582143 for the same vehicle?

Both fit the 2013 FX37 and 2014-2016 QX70 3.7L. They are separate converters that may occupy different positions in the exhaust system. Check your vehicle's exhaust layout to confirm which part number you need for each converter location.

What tools are needed for installation?

Since this is a bolt-on direct-fit converter, standard hand tools are sufficient. You will need a way to safely raise the vehicle -- a lift or jack stands. No cutting or welding is required.

Are the included gaskets necessary or can I reuse the old ones?

Use the included gaskets. The crush ring gasket and flange gasket that come with MagnaFlow 5582144 provide a fresh seal. Reusing old gaskets risks exhaust leaks, especially on vehicles with years of heat exposure on the original hardware.

Magnaflow 09-12 Infiniti FX35 3.5L Direct Fit Converter

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Specifications

Brand: Magnaflow
Part #: 5582144
UPC: 888563159140

Magnaflow 09-12 Infiniti FX35 3.5L Direct Fit Converter

Name: Magnaflow 09-12 Infiniti FX35 3.5L Direct Fit Converter
Brand: Magnaflow
Price: 3040.00 USD
Availability: InStock

$3040.00

On Backorder

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

Fits 2013 Infiniti FX37 3.7L and 2014-2016 QX70 3.7L. MagnaFlow CARB compliant direct-fit catalytic converter with full hardware kit included.

Key Features

Direct fit for 2013 Infiniti FX37 3.7L and 2014-2016 Infiniti QX70 3.7L
CARB compliant -- legal for use in all 50 states including California
Includes six flat washers, one crush ring gasket, four bolts, one flange gasket, and four nuts
16-gauge 409 stainless steel tubing
Mandrel-bent piping matches OE exhaust geometry
Single laser fusion weld on spun body design

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Fits these vehicles

INFINITI FX37 2013
INFINITI QX70 2014-2016

Moderate difficulty to install

Bolt-on direct-fit design with all gaskets and hardware included. No cutting or welding required.

Product Details

Replacing a catalytic converter on the Infiniti FX37 or QX70 means working with corroded hardware and aged gaskets, so starting with a kit that includes fresh parts matters. MagnaFlow 5582144 ships with six flat washers, one crush ring gasket, four bolts, one flange gasket, and four nuts -- a complete hardware set for the installation.

This CARB compliant direct-fit converter is built for the 2013 Infiniti FX37 3.7L and the 2014-2016 Infiniti QX70 3.7L. MagnaFlow constructs it from 16-gauge 409 stainless steel with mandrel-bent tubing that follows the OE pipe routing. Their 3D scanning development process ensures the flanges, hangers, and pipe geometry line up with the factory exhaust, so no cutting or welding is needed. The spun body uses a single laser fusion weld, and the pipe joints are finished with 308 stainless steel MIG welds.

Because this is a California-grade converter, it is legal for sale and use in all 50 states including CARB-regulated states. Before installing, verify that your vehicle's Executive Order number and Engine Family Number appear in this converter's CARB Executive Order. With the included hardware, the installation comes down to removing the old unit and bolting up the new one.