Will this catalytic converter keep my check engine light off?

Yes, this Magnaflow catalytic converter is designed to meet or exceed emissions requirements and function like the original equipment, which should help keep your check engine light off if the issue was with the original converter.

Do I need to weld this catalytic converter on?

No, this is a direct-fit catalytic converter. It's designed to bolt directly onto your existing exhaust system, so no cutting or welding is required for installation, assuming you have the proper tools.

What is included with this catalytic converter?

This Magnaflow catalytic converter includes the converter itself and a donut gasket to help ensure a proper seal during installation.

1999-2003 Lexus RX300 Catalytic Converter

Name: MagnaFlow Conv DF 99-03 Lexus RX300 3.0L rear
Brand: Magnaflow
SKU: magnaflow-magnaflow-conv-df-99-03-lexus-rx300-3-0l-rear-t14-238832
Price: 580.00 USD
Availability: BackOrder

MagnaFlow Conv DF 99-03 Lexus RX300 3.0L rear

$580.00

On Backorder

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

Fits 1999-2003 Lexus RX300. Magnaflow direct-fit catalytic converter designed to keep your check engine light off and meet CARB requirements.

Key Features

1999-2003 Lexus RX300 rear catalytic converter.
CARB compliant for legal use in California and restricted states.
Mandrel-bent tubing eliminates flow restrictions for optimal exhaust flow.
Constructed from high-strength 16-gauge 409 stainless steel for corrosion resistance.
Direct-fit design requires no cutting or welding for installation.
Single laser fusion weld helps prevent exhaust leaks.

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Product Details

The 1999-2003 Lexus RX300 3.0L uses a specific catalytic converter to manage emissions, and Magnaflow's 441417 is built to meet those needs, especially in California and other CARB-restricted states. This converter is designed as a direct-fit replacement, meaning it bolts up to your existing exhaust system without needing any cutting or welding, simplifying the installation process considerably. It's constructed from highly corrosion-resistant stainless steel, with mandrel-bent tubing to ensure smooth exhaust flow and maintain factory performance and fuel efficiency.

Magnaflow uses advanced 3D scanning during their research and development to ensure this converter replicates the original equipment's fit and function precisely. The single laser fusion weld is designed to greatly reduce the possibility of exhaust leaks, and its compact, low-mass design helps with thermal efficiency. This converter is CARB compliant, meaning it has undergone additional testing to meet or exceed California Air Resource Board requirements, making it legal for use in California and other states with strict emissions standards.

When you install this converter, it includes a donut gasket to help ensure a proper seal. This is a well-built replacement part designed to keep your check engine light off and your RX300 running cleanly.