What makes this a direct-fit catalytic converter?

This MagnaFlow converter is designed to bolt directly in place of your original equipment, meaning no cutting or welding is required for installation. It replicates the OE design and mounting points for a straightforward replacement process.

What materials is this catalytic converter made from?

The tubing is constructed from high-strength 16-gauge 409 stainless steel for superior corrosion resistance. The welds are made from 308 stainless steel using a MIG process, ensuring a durable and leak-resistant connection.

MagnaFlow Conv DF 03-04 Audi RS6 4.2L Driver Side

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Specifications

Brand: Magnaflow
Part #: 49742
UPC: 841380096784

MagnaFlow Conv DF 03-04 Audi RS6 4.2L Driver Side

Name: MagnaFlow Conv DF 03-04 Audi RS6 4.2L Driver Side
Brand: Magnaflow
Price: 806.00 USD
Availability: InStock

$806.00

On Backorder

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

Fits 2003 Audi RS6. MagnaFlow direct-fit catalytic converter helps keep your check engine light off with an easy, no-weld installation.

Key Features

Fits 2003 Audi RS6.
Direct-fit design replicates OE specifications for straightforward installation without cutting or welding.
Constructed with high-strength 16-gauge 409 stainless steel tubing for excellent corrosion resistance and a long service life.
Features a free-flowing design to maintain factory performance and fuel efficiency.
Built with durable 308 stainless steel MIG welds for solid construction.
Designed to meet or exceed Federal emissions requirements set forth by the EPA for OBDII federally registered vehicles.

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Fits this vehicle

Audi RS6 2003

Product Details

When your 2003 Audi RS6's check engine light comes on, and you suspect it's the catalytic converter, replacing it with a direct-fit unit like this one from MagnaFlow is a solid plan. This converter is specifically made for the driver's side of your RS6's 4.2L V8, designed to meet federal emissions standards and keep your car running cleanly.

MagnaFlow builds this converter with free-flowing, mandrel-bent tubing made from strong 16-gauge 409 stainless steel, which means it's built to resist corrosion and last a long time. They use advanced 3D scanning during development to make sure it fits just like the original equipment, so you won't have to cut or weld anything to get it installed. The design replicates the OE spun body style, and a single laser fusion weld is used to greatly reduce the chance of leaks. Its compact, low-mass design also helps with thermal efficiency.

This direct-fit converter is designed to replace your original part (OE part number 4B3 253 057 EX) and is compliant with EPA emissions requirements for OBDII federally registered vehicles. While it meets federal standards, please note it is not CARB approved and cannot be shipped to California.