Does this fit both the Explorer and the Mountaineer?

Yes. The 2002-2003 Ford Explorer 4.0L and Mercury Mountaineer 4.0L share the same exhaust layout, so this single converter covers both vehicles.

What OE parts does this interchange with?

MagnaFlow lists OE interchange part numbers 1L2Z-5F250-AA and 2L2Z-5F250-AB. Match one of these to your factory part number to confirm compatibility.

What installation hardware is included?

One Torca AccuSeal clamp and one donut gasket come in the box. The clamp provides 360-degree distributed clamping force, and the gasket gives you a fresh seal without reusing corroded factory parts.

Magnaflow Conv DF 02-03 Ford Explorer 4.0L / 02-03 Mercury Mountaineer 4.0L (California)

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Specifications

Brand: Magnaflow
Part #: 447253
UPC: 841380082480

Magnaflow Conv DF 02-03 Ford Explorer 4.0L / 02-03 Mercury Mountaineer 4.0L (California)

Name: Magnaflow Conv DF 02-03 Ford Explorer 4.0L / 02-03 Mercury Mountaineer 4.0L (California)
Brand: Magnaflow
Price: 3168.00 USD
Availability: InStock

$3168.00

On Backorder

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

Fits 2002-2003 Ford Explorer and Mercury Mountaineer 4.0L. MagnaFlow CARB compliant direct-fit converter with Torca clamp and donut gasket included.

Key Features

Direct fit for 2002-2003 Ford Explorer 4.0L and 2002-2003 Mercury Mountaineer 4.0L
Interchanges with OE parts 1L2Z-5F250-AA and 2L2Z-5F250-AB
CARB compliant and legal in all 50 states including California
Includes Torca AccuSeal clamp and donut gasket
Mandrel-bent 16-gauge 409 stainless steel tubing matches OEM geometry
OE-sized 410 stainless steel exhaust hangers reduce noise and vibration

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Fits these vehicles

Ford Explorer 2002-2003
Mercury Mountaineer 2002-2003

Moderate difficulty to install

Bolt-on replacement with included clamp and gasket, no cutting or welding, but SUV exhaust access can require a lift.

Product Details

MagnaFlow's direct-fit catalytic converter part number 447253 serves both the 2002-2003 Ford Explorer 4.0L and the 2002-2003 Mercury Mountaineer 4.0L. These two vehicles share the same platform and exhaust routing, so one converter covers both applications. It also interchanges with OE parts 1L2Z-5F250-AA and 2L2Z-5F250-AB, giving you a way to cross-reference your factory part before ordering.

The mandrel-bent tubing is made from 16-gauge 409 stainless steel and follows the OEM geometry, which MagnaFlow develops through 3D scanning of the original equipment. The OE-sized barbed exhaust hangers use corrosion-resistant 410 stainless steel to cut down on noise and vibration. At the joints, 308 stainless steel MIG welds hold things together, and the precision-stamped collector design maintains consistent exhaust flow. The Torca AccuSeal clamp in the box provides full 360-degree clamping force, and the included donut gasket seals the connection without needing to reuse your old parts.

No cutting or welding is required for installation. This converter is CARB compliant and legal in all 50 states, including California, Colorado, New York, and Maine. Verify your vehicle's Executive Order number and Engine Family Number match this converter's CARB Executive Order before installing.