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Catalytic Converter for 2004 Audi A8 Quattro

We have 8 Items In-stock.

Magnaflow 49-State Legal Semi-Universal Catalytic Converter

  • Not legal for use in California or in states adopting the California emissions standards
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These 49-State Legal semi-universal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

Magnaflow 49-State Semi-Universal Rear, Driver Or Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$100.27 $129.77 You Save $29.50 (23%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: M6699206HM
  • Location: Rear, Driver Or Passenger Side
  • Series: Magnaflow 49-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 9 in. L x 5.13 in. W, 13 in. overall length
  • Notes: Does not have provision for O2 sensor
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
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Customer Review: (see review/s)
  • While it is necessary to adapt to pipe size on vehicle, the rear requires leaving part of the previous converter on. i.e. The very end of the old converter. That will be the same OD as the new converrter. The old fitting has to be ground down, or as I did, filed. I might better have used a coupling. When I do the left bank, I may try cutting the old portion off, and adapt down. I shall try the coupling. You must have a local supplier who stocks a wide variety of fittings! They are inexpensive. Remember, the adapters can be shortened to allow slippage while installing. They can always be shortened, but cannot be lengthened once cut off, so measure carefully. Think ahead. Procrastinate. As it is, I am still going to have a friend braze the rear end joint, as it leaks a little. Using a coupling most likely would have avoided the leakage.

    posted by: suvguy on July 24, 2012

Magnaflow OEM Grade (48-State Legal) Semi-Universal Catalytic Converters

  • Not legal for use in California or New York
  • Designed for vehicles equipped with California emissions but not registered or driven in a state adopting the California emissions standards (see item details for more information)
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These 48-State Legal semi-universal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

Magnaflow OEM Grade (49-State) Semi-Universal Rear, Driver Or Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$122.43 $158.43 You Save $36.00 (23%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: M6651206
  • Location: Rear, Driver Or Passenger Side
  • Series: Magnaflow OEM Grade (49-State) Semi-Universal
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
See more

Magnaflow California Legal Semi-Universal Catalytic Converter

  • 50-State/California Legal
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These semi-universal 50-State Legal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

Magnaflow 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

Overstock
$224.94 $291.09 You Save $66.15 (23%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: M6646704
  • Series: Magnaflow 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-193-89
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 13 in. overall length
  • Notes: Inlet/Outlet Size : 2in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
See more
Customer Review: (see review/s)
  • This purchase allowed me to save at least $500, by cutting out the middle man!

    posted by: KMann on November 5, 2010

  • It's cheap and good for California, I recommended this Catalytic Converter. I got smog test passed.

    posted by: mpineda7 on October 6, 2010

Eastern 50-state legal Catalytic Converter

Eastern ECO CARB Catalytic Converter

 30 years of innovation is proof enough that Eastern is the best manufacturer of the finest aftermarket and original equipment catalytic converters on the market. Their ECO Series Catalytic Converters which are designed to help keep the Check Engine Light (MIL) off is another set of catalytic converters with world class quality.

 The Eastern ECO CARB Catalytic Converter is the best option for any vehicle that needs to comply with the California Air Resources Board (CARB) regulations. The Eastern ECO CARB Catalytic Converter features washcoats with greater loadings of precious metals to handle applications with ultra low emissions, higher than normal emissions, as well as vehicles with higher mileage and heavier workloads.

Here's why Eastern ECO CARB Catalytic Converter is the best option:

  •   Passed the emissions requirement of the California Air Resources Board
  •   Engineered with Eastern's proprietary NANO technology yielding highly efficient loadings for lower cost and better converter efficiency
  •   Features an advanced materials design for maximum engine output and performance
  •   Comes with a 5-year or 50,000-mile warranty

Eastern ECO CARB Center Catalytic Converter - Traditional Converter, Semi-Universal

$187.07 $220.74 You Save $33.67 (15%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: EAST630015
  • Location: Center
  • Series: Eastern ECO CARB
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • E O Number: D-665-17
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
See more

Walker 50-state legal Catalytic Converter

Walker catalytic converters feature OE style design and fit, thicker OE-quality flanges, oxygen sensor fittings, heat-shielded pipe, and structural brace for enhanced strength and durability.

Features:

  • Higher loaded substrate
  • Easy bolt-on installation

Notes:

  • 50-state legal
  • Minor modifications required

Walker CalCat Driver Or Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

$223.01 $397.34 You Save $174.33 (44%)
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Availability: In Stock
Only from APW Rewards
  • Sku#: WK81702
  • Location: Driver Or Passenger Side
  • Series: Walker CalCat
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-182-45
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Walker limited warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
See more

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