Audi A4 & S4 Parts & Mods

Build your A4 & S4 your way. Browse 600+ parts and mods for the Audi A4 & S4, including brakes, body kits, suspension and lighting from brands like K2 Industries, H&R, DBA Rotors and MagnaFlow. Every listing names the exact years and trims it fits, so check the title before you order. Not sure? Send us your year, trim and VIN and we'll confirm fitment first.

Audi A4 / A4L B8 / A5 / Q5 Interior 64-Color Star Sky Dynamic LED Ambient Light Kit 2009 - 2017

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Audi A4 / A4L B8 / A5 / Q5 Interior 64-Color Star Sky Dynamic LED Ambient Light Kit 2009 - 2017

Audi A4 / A4L B8 / A5 / Q5 Interior 64-Color Star Sky Dynamic LED Ambient Light Kit 2009 - 2017

$599.99

Sale price $599.99 Regular price $658.00
Audi A4 B8 Interior 64-Color Symphony LED Ambient Light Kit 2009 - 2016

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Audi A4 B8 Interior 64-Color Symphony LED Ambient Light Kit 2009 - 2016

Audi A4 B8 Interior 64-Color Symphony LED Ambient Light Kit 2009 - 2016

$709.99

Sale price $709.99 Regular price $779.00
Audi A4 RS Style LED Headlight Assembly with Daytime Running Lights 2008 - 2012

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Audi A4 RS Style LED Headlight Assembly with Daytime Running Lights 2008 - 2012

Audi A4 RS Style LED Headlight Assembly with Daytime Running Lights 2008 - 2012

$879.99

Sale price $879.99 Regular price $966.00
Audi S4 / S5 / A6 / Q7 / SQ5 3.0 TFSI & VW Golf MK5 GTI BYD Engine Walnut Blaster Carbon Cleaning Adapter (Billet Aluminum)

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Audi S4 / S5 / A6 / Q7 / SQ5 3.0 TFSI & VW Golf MK5 GTI BYD Engine Walnut Blaster Carbon Cleaning Adapter (Billet Aluminum)

Audi S4 / S5 / A6 / Q7 / SQ5 3.0 TFSI & VW Golf MK5 GTI BYD Engine Walnut Blaster Carbon Cleaning Adapter (Billet Aluminum)

$49.99

Sale price $49.99 Regular price $54.00
02-08 Audi A4/S4/RS4 Carbon Fiber Pattern Window Visors 4PC

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02-08 Audi A4/S4/RS4 Carbon Fiber Pattern Window Visors 4PC

02-08 Audi A4/S4/RS4 Carbon Fiber Pattern Window Visors 4PC

$69.99

Sale price $69.99 Regular price $90.00
97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

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97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

$189.99

Sale price $189.99 Regular price $230.00
97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

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97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

$219.99

Sale price $219.99 Regular price $270.00
97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

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97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

$189.99

Sale price $189.99 Regular price $230.00
02-08 Audi A4/S4/RS4 Window Motor & Regulator Assembly

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02-08 Audi A4/S4/RS4 Window Motor & Regulator Assembly

02-08 Audi A4/S4/RS4 Window Motor & Regulator Assembly

$79.99

Sale price $79.99 Regular price $100.00
02-08 Audi A4 / RS4 / S4 Window Motor & Regulator Set

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02-08 Audi A4 / RS4 / S4 Window Motor & Regulator Set

02-08 Audi A4 / RS4 / S4 Window Motor & Regulator Set

$79.99

Sale price $79.99 Regular price $100.00
02-10 Audi A4/S4 & 07-08 RS4 Window Motor & Regulator Set

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02-10 Audi A4/S4 & 07-08 RS4 Window Motor & Regulator Set

02-10 Audi A4/S4 & 07-08 RS4 Window Motor & Regulator Set

$79.99

Sale price $79.99 Regular price $100.00
98-06 Audi A4/A6/Allroad & VW Beetle/Golf/Jetta Engine Sensor

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98-06 Audi A4/A6/Allroad & VW Beetle/Golf/Jetta Engine Sensor

98-06 Audi A4/A6/Allroad & VW Beetle/Golf/Jetta Engine Sensor

$99.99

Sale price $99.99 Regular price $120.00
00-06 Audi A4 / TT VW Beetle Golf Jetta Passat 1.8T Front Sensor

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00-06 Audi A4 / TT VW Beetle Golf Jetta Passat 1.8T Front Sensor

00-06 Audi A4 / TT VW Beetle Golf Jetta Passat 1.8T Front Sensor

$109.99

Sale price $109.99 Regular price $140.00
1997-2001 Audi A4 / 1997-2004 Volkswagen Passat OEM Radiator Manual

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1997-2001 Audi A4 / 1997-2004 Volkswagen Passat OEM Radiator Manual

1997-2001 Audi A4 / 1997-2004 Volkswagen Passat OEM Radiator Manual

$149.99

Sale price $149.99 Regular price $180.00
17-21 Audi A4/A4 Quattro/A5 Quattro A6 Quattro/Q7 OEM Radiator

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17-21 Audi A4/A4 Quattro/A5 Quattro A6 Quattro/Q7 OEM Radiator

17-21 Audi A4/A4 Quattro/A5 Quattro A6 Quattro/Q7 OEM Radiator

$229.99

Sale price $229.99 Regular price $280.00
11-17 Audi A4/A5/A6/A7/Q5/S4/S5/Macan OEM Radiator V6 3.0L/3.6L

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11-17 Audi A4/A5/A6/A7/Q5/S4/S5/Macan OEM Radiator V6 3.0L/3.6L

11-17 Audi A4/A5/A6/A7/Q5/S4/S5/Macan OEM Radiator V6 3.0L/3.6L

$209.99

Sale price $209.99 Regular price $260.00
09-17 Audi A4/A5/A6/Q5 L4 2.0L OEM Radiator

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09-17 Audi A4/A5/A6/Q5 L4 2.0L OEM Radiator

09-17 Audi A4/A5/A6/Q5 L4 2.0L OEM Radiator

$179.99

Sale price $179.99 Regular price $220.00
Catalytic Converter - 01-06 Audi A4 / 98-05 VW Passat 1.8L Turbo

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Catalytic Converter - 01-06 Audi A4 / 98-05 VW Passat 1.8L Turbo

Catalytic Converter - 01-06 Audi A4 / 98-05 VW Passat 1.8L Turbo

$299.99

Sale price $299.99 Regular price $360.00
2013-2016 Audi A4 Front License Plate Mounting Bracket

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2013-2016 Audi A4 Front License Plate Mounting Bracket

2013-2016 Audi A4 Front License Plate Mounting Bracket

$99.99

Sale price $99.99 Regular price $120.00
2013-2016 Audi A4 RS4 Style Front Grille Gloss Black

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2013-2016 Audi A4 RS4 Style Front Grille Gloss Black

2013-2016 Audi A4 RS4 Style Front Grille Gloss Black

$449.99

Sale price $449.99 Regular price $540.00
2017-2019 Audi A4/S4 RS4 Style Front Grille w/ Parking Aid

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2017-2019 Audi A4/S4 RS4 Style Front Grille w/ Parking Aid

2017-2019 Audi A4/S4 RS4 Style Front Grille w/ Parking Aid

$489.99

Sale price $489.99 Regular price $590.00
2005-2008 Audi A4/S4 RS4 Style Matte Black Grille

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2005-2008 Audi A4/S4 RS4 Style Matte Black Grille

2005-2008 Audi A4/S4 RS4 Style Matte Black Grille

$409.99

Sale price $409.99 Regular price $500.00
02-09 Audi A4 Engine Air Filter - Red

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02-09 Audi A4 Engine Air Filter - Red

02-09 Audi A4 Engine Air Filter - Red

$99.99

Sale price $99.99 Regular price $120.00
96-05 Audi A4/A6/Allroad & VW Passat Red Engine Air Filter

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96-05 Audi A4/A6/Allroad & VW Passat Red Engine Air Filter

96-05 Audi A4/A6/Allroad & VW Passat Red Engine Air Filter

$109.99

Sale price $109.99 Regular price $140.00

Audi A4 & S4 Parts & Mods

Filter

Audi A4 / A4L B8 / A5 / Q5 Interior 64-Color Star Sky Dynamic LED Ambient Light Kit 2009 - 2017

Audi A4 B8 Interior 64-Color Symphony LED Ambient Light Kit 2009 - 2016

Audi A4 RS Style LED Headlight Assembly with Daytime Running Lights 2008 - 2012

Audi S4 / S5 / A6 / Q7 / SQ5 3.0 TFSI & VW Golf MK5 GTI BYD Engine Walnut Blaster Carbon Cleaning Adapter (Billet Aluminum)

02-08 Audi A4/S4/RS4 Carbon Fiber Pattern Window Visors 4PC

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

02-08 Audi A4/S4/RS4 Window Motor & Regulator Assembly

02-08 Audi A4 / RS4 / S4 Window Motor & Regulator Set

02-10 Audi A4/S4 & 07-08 RS4 Window Motor & Regulator Set

98-06 Audi A4/A6/Allroad & VW Beetle/Golf/Jetta Engine Sensor

00-06 Audi A4 / TT VW Beetle Golf Jetta Passat 1.8T Front Sensor

1997-2001 Audi A4 / 1997-2004 Volkswagen Passat OEM Radiator Manual

17-21 Audi A4/A4 Quattro/A5 Quattro A6 Quattro/Q7 OEM Radiator

11-17 Audi A4/A5/A6/A7/Q5/S4/S5/Macan OEM Radiator V6 3.0L/3.6L

09-17 Audi A4/A5/A6/Q5 L4 2.0L OEM Radiator

Catalytic Converter - 01-06 Audi A4 / 98-05 VW Passat 1.8L Turbo

2013-2016 Audi A4 Front License Plate Mounting Bracket

2013-2016 Audi A4 RS4 Style Front Grille Gloss Black

2017-2019 Audi A4/S4 RS4 Style Front Grille w/ Parking Aid

2005-2008 Audi A4/S4 RS4 Style Matte Black Grille

02-09 Audi A4 Engine Air Filter - Red

96-05 Audi A4/A6/Allroad & VW Passat Red Engine Air Filter

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Audi A4 & S4 Parts & Mods

Active filters:

Audi A4 / A4L B8 / A5 / Q5 Interior 64-Color Star Sky Dynamic LED Ambient Light Kit 2009 - 2017

Audi A4 B8 Interior 64-Color Symphony LED Ambient Light Kit 2009 - 2016

Audi A4 RS Style LED Headlight Assembly with Daytime Running Lights 2008 - 2012

Audi S4 / S5 / A6 / Q7 / SQ5 3.0 TFSI & VW Golf MK5 GTI BYD Engine Walnut Blaster Carbon Cleaning Adapter (Billet Aluminum)

02-08 Audi A4/S4/RS4 Carbon Fiber Pattern Window Visors 4PC

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

97-06 Audi A4 B5 B6 / 98-05 VW Passat 1.8T Turbo Manifold Stainless Steel

02-08 Audi A4/S4/RS4 Window Motor & Regulator Assembly

02-08 Audi A4 / RS4 / S4 Window Motor & Regulator Set

02-10 Audi A4/S4 & 07-08 RS4 Window Motor & Regulator Set

98-06 Audi A4/A6/Allroad & VW Beetle/Golf/Jetta Engine Sensor

00-06 Audi A4 / TT VW Beetle Golf Jetta Passat 1.8T Front Sensor

1997-2001 Audi A4 / 1997-2004 Volkswagen Passat OEM Radiator Manual

17-21 Audi A4/A4 Quattro/A5 Quattro A6 Quattro/Q7 OEM Radiator

11-17 Audi A4/A5/A6/A7/Q5/S4/S5/Macan OEM Radiator V6 3.0L/3.6L

09-17 Audi A4/A5/A6/Q5 L4 2.0L OEM Radiator

Catalytic Converter - 01-06 Audi A4 / 98-05 VW Passat 1.8L Turbo

2013-2016 Audi A4 Front License Plate Mounting Bracket

2013-2016 Audi A4 RS4 Style Front Grille Gloss Black

2017-2019 Audi A4/S4 RS4 Style Front Grille w/ Parking Aid

2005-2008 Audi A4/S4 RS4 Style Matte Black Grille

02-09 Audi A4 Engine Air Filter - Red

96-05 Audi A4/A6/Allroad & VW Passat Red Engine Air Filter