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Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 1
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 1
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 2
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 2
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 3
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 3
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 4
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 4
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 5
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 5
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 1
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 2
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 3
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 4
Davico Mfg Catalytic Converter P/N:18319 Fits: Audi A4 05-04, Audi A4 Quattro 05-04, Audi S4 09-04 Image 5

Davico Catalytic Converter P/N:18319

2004 - 2009 Audi A4 / S4 Replacement Catalytic Converter

$567.74 $624.95 /
Subscription -
  • High-quality catalysts resolve codes and pass emissions tests
  • Exact fit for a fast and straightforward install
  • Fits Audi A4 2004-2005, Audi A4 Quattro 2004-2005, and Audi S4 2004-2009
  • Manufactured in the USA
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Premium Quality

Resolve Check Engine Codes

Install Without Guesswork

We stock direct-fit converters that match factory specs - all flanges, brackets, and sensor ports line up. No cutting, welding, or modifying.

Pass Emissions and Resolve Codes

High-quality catalysts and washes resolve error codes and pass strict emissions test standards.

Built to Last

High-grade catalysts and premium wash coatings for optimal performance and longevity.

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