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Catalytic Converter for 2004 Audi A8 Quattro

We have 6 Items In-stock.

Eastern - 50-State Semi-Universal Catalytic Converters

EASTERN – 50-STATE LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTERS

Whip your exhaust system back into shape with the optimum engineering and maximum-flow performance offered by Eastern’s 50-state legal semi-universal catalytic converters. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • Semi-universal fit – readily adaptable to suit your specific vehicle
  • CARB-compliant – legal in all 50 states, including New York and California
  • Engineered with NANO technology chemistry for optimum efficiency
  • Designed for maximum flow
  • Thoroughly tested to guarantee secure fit and performance
  • Aluminized and 409 stainless steel construction for superior anti-rust protection
  • Built with full heat shields, both top and bottom (depending on application)

Eastern 50-State Semi-Universal Center Catalytic Converter - Traditional Converter, Semi-Universal

$187.07 $220.74 You Save $33.67 (15%)
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Availability: In Stock
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  • Brand SKU#: Eastern 630015
  • Location: Center
  • Series: Eastern 50-State Semi-Universal
  • 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
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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

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$100.27 $129.77 You Save $29.50 (23%)
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Availability: In Stock
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  • Brand SKU#: Magnaflow 99206HM
  • 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
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  • Brand SKU#: Magnaflow 51206
  • 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
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Walker - OE Replacement Catalytic Converters (50-State Legal)

WALKER - OE REPLACEMENT CATALYTIC CONVERTERS (50-STATE LEGAL)

Optimize your vehicle’s emissions control with the premium steel design and CARB-approved performance of Walker's OE replacement catalytic converters. Established in 1908, Walker is renowned in the automotive aftermarket for manufacturing a full line of exhaust system parts.

  • Engineered with higher loaded substrate
  • Premium stainless steel design
  • No trouble to bolt on
  • Equipped with OE-style flanges, hangers and brackets

Notes:

  • CARB-compliant/legal in 50 states - for sale and use in New York and California; can be shipped to addresses in New York and California.

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

$185.65 $397.34 You Save $211.69 (53%)
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Availability: In Stock
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  • Brand SKU#: Walker 81702
  • 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: Same day - 1 business day
  • 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
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Benchmark - OE Replacement Catalytic Converters (48-State Legal - No CA, No NY)

BENCHMARK - OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

Benchmark's OE replacement catalytic converters set the industry standard in terms of fitment and durability. Their performance is closely monitored and backed by Benchmark's emissions laboratory, ensuring quality loadings that eliminate OBDII issues caused by many universal catalytic converters.

Notes:

  • 48-state legal - cannot be shipped to New York or California; not for sale or use in New York or California.

Benchmark Driver Side Catalytic Converter - Traditional Converter, Direct Fit

$408.41 $1,365.00 You Save $956.59 (70%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 1322D
  • Location: Driver Side
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
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Fits the following 2004 Audi A8 Quattro Submodels

  • 8 Cyl 4.2L | L
See more

Benchmark Passenger Side Catalytic Converter - Traditional Converter, Direct Fit

$408.41 $1,365.00 You Save $956.59 (70%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Benchmark 1322P
  • Location: Passenger Side
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Benchmark 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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