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Audi S4 Catalytic Converter

We have 6 Items In-stock. Select a year to continue.
$364.36 List Price $429.94 Save $65.58 Availability: In Stock
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Eastern Catalytic Converter

World-class quality and innovation have made Eastern the best converter manufacturer in the business. 100% of Eastern's research and development efforts goes into making the finest aftermarket and original equipment catalytic converters on the market. Each Eastern catalytic converter uses advanced materials design which retains maximum engine output and maximizes catalytic efficiency. Eastern's proprietary NANO technology chemistry yields highly efficient loadings for lower cost and better converter efficiency.

Specifications:

  • 3-way catalyst style
  • 2 oxygen sensor ports
  • Round body
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: EAST40912
  • Brand: Eastern
  • Fit Note: Manual Transmission
  • Quantity Sold: Assembly
  • Tube Material: Aluminized steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
 
Fits the following Audi S4 Years:
  • 2004-2009 | 8 Cyl 4.2L | Cabriolet
  • 2004-2008 | 8 Cyl 4.2L | Avant, Base
$97.63 List Price $126.35 Save $28.72 Availability: In Stock
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  • 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.

  • SKU#: M6699204HM
  • Brand: Magnaflow
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
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Fits the following Audi S4 Years:
  • 2004-2009 | 8 Cyl 4.2L | Cabriolet
  • 2004-2008 | 8 Cyl 4.2L | Avant, Base
Rating: (see review/s)

"Replaced entire exhaust and this item was part of it. Couple days for shipping arrived undamaged had everything welded and installed and sounds great. This is a fraction of the cost of a direct fit/bolt on converter so was pretty much a no-brainer." posted by: on May 18, 2014

$336.33 List Price $396.87 Save $60.54 Availability: In Stock
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DAVICO EXACT FIT 49-STATE CATALYTIC CONVERTER

Do not settle for a universal or generic catalytic converter when you can replace your old or failing catalytic converter with a direct fit unit from Davico Manufacturing. This company has been producing catalytic converters since 1987 and is known for producing direct fit aftermarket catalytic converters that are at par with OEM units in terms of quality, specifications, and performance. Their Exact Fit Catalytic Converter is sized specifically for each application and uses the right substrate to meet the aftermarket performance standards for catalytic converters.

Features:
  • Direct fit - made using reliable computer-controlled fabrication system for flawless replication
  • Manufactured using strict OEM and emission control specifications
  • No cutting, sliding, clamping, or welding required for easier installation
Specifications:
  • 2 oxygen sensor ports
  • Round body
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: DAV18319
  • Brand: Davico
  • Fit Note: Standard Transmission
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Anticipated Ship Out Time: 1-2 business days
  • Warranty: 2-year or 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and welds
 
Fits the following Audi S4 Years:
  • 2004-2009 | 8 Cyl 4.2L | Cabriolet
  • 2004-2008 | 8 Cyl 4.2L | Avant, Base
$83.10 List Price $203.72 Save $120.62 Availability: In Stock
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WALKER CATALYTIC CONVERTER, UNIVERSAL

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
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: WK15051
  • Brand: Walker
  • Quantity Sold: Sold individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Warranty: 5-year or 50,000-mile Walker limited warranty
 
Fits the following Audi S4 Years:
  • 1994 | 5 Cyl 2.2L | Base
$627.95 List Price $1,000.00 Save $372.05 Availability: In Stock
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Diversified Environmental Catalysts
Diversified Environmental Catalysts, Inc. specializes in the manufacturing of direct fit catalytic converters for import and domestic vehicles.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: W0133-1890307
  • Brand: Benchmark
  • Fit Note: 6-Speed, Standard Transaxle, This catalytic converter is NOT approved for sale or use in California., Standard Transmission, This catalytic converter is NOT approved for sale or use in California.
  • Quantity Sold: Assembly
  • Tube Material: Steel
  • Anticipated Ship Out Time: 1-2 business days
 
Fits the following Audi S4 Years:
  • 2000-2002 | All Engines | All Submodels
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$514.95 List Price $900.00 Save $385.05 Availability: In Stock
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Emico Catalytic Converters

Emico catalytic converters are quality direct fit that are manufactured to high quality standards using O.E. production processes. Emico Converters are made from high quality stainless steel, and use the factory mounting points which do not require "fitting" and "sealing". The exterior tubes are bent using the mandrel bender, which prevents tube cross sections from deforming and wrinkling.

  • Duracat technology for outstanding longevity
  • 100% OE manufacturing process
  • OE Style Mounting for Easy Installation
  • OE Designed Flanges
  • Heavy Duty Stainless Steel Construction

Installation Note: The manufacturer recommends the replacement of the oxygen sensor(s) when replacing the catalyst.

EPA/CARB Regulation: This Catalytic Converter is NOT CARB Approved and is not approved for sale or use in vehicles manufactured for or registered in the State of California. Do not install this Catalytic Converter in California emission vehicles within or outside the State of California.

Warranty Information: Emico Technologies Inc. warrants that its catalytic converter is free from defects in materials and workmanship. Emico Converters have been designed and manufactured to meet US EPA and California CARB requirements, and when the vehicle is properly maintained, the catalytic converter is warranted to meet such requirements for 25,000 miles from the time of installation. The stainless steel body and the end pipes are separately warranted for 5 years or 50,000 miles from the time of installation.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: W0133-1914667
  • Brand: Emico
  • Fit Note: 6-Speed, Standard Transaxle, This catalytic converter is NOT approved for sale or use in California., Standard Transmission, This catalytic converter is NOT approved for sale or use in California.
  • Quantity Sold: Sold individually
  • Tube Material: Stainless Steel
 
Fits the following Audi S4 Years:
  • 2000-2002 | All Engines | All Submodels
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Select more Audi S4 parts under Catalytic Converters & Components from list below.