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20 Best 2003 Audi A4 Vacuum Diagram of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best 2003 Audi A4 Vacuum Diagram of 2023. Check our ranking below.

2,362 Reviews Scanned

Rank No. #1

MIUINCY 07C133529A Air Pump Vacuum Check Valve Pipe for Audi A4 A6 Quattro Volkswagen VW Passat B5 1999 2000-2005 1.8T

Part Number: 07C133529A
Model Number : Pressure Vacuum Check Valve
Fit for 2006 Audi A4 1.8 L4 Cabriolet
Fit for 2004-2005 Audi A4 1.8 L4 Base
For Audi A4 A6 Quattro Volkswagen VW Passat B5 1999 2000-2005 1.8T

Rank No. #2

Vacuum Pump Rebuild Kit Compatible with Audi A4 Q5 A3 VW Beetle Jetta Passat 2.0T 1.8T 2009-2019, Vacuum Pump Seal Kit Replace 06J145100C 06J145100G

Perfect Fit: Designed based on original car data, perfectly compatible with Audi A4 Allroad A5 Q5 A6 A3 2009-2016, does not fit the 2.0T used in the A3, TT. Compatible with Volkswagen GTI GLI Jetta Beetle Golf Passat 2013-2019. Replace 06J145100C 06J145100P 06J145100N 06J145100G WHT005184 06H10 3121F 06H103121J
Replace in Time: If there is oil leakage or you smell an unpleasant smell of gasoline, you need to check whether the sealing ring is damaged and replace it in time. When the machine is regularly inspected and maintained, it is necessary to check whether it needs to be replaced. Please clean the oil stains before installation to achieve a better fit and better sealing effect
Good Sealing: Vacuum pump rebuild kit includes the necessary seals and gaskets, which can restore the original performance of the vacuum pump. It has a good sealing effect, prevents fuel waste and leakage, effectively improves fuel utilization and reduces energy consumption
Stable and Durable: Vacuum pump reseal kit is made of high-quality military-grade fluorocarbon (fluorine rubber), designed to remain stable under the extreme conditions of the engine, resistant to oil stains, corrosion-resistant, durable, and resistant to high-temperature fuel oil, hydraulic oil, etc. The oil is highly resistant, effectively extending service life and saving you money
Easy Installation: Economical and simple, no need to replace the vacuum pump, much more economical than replacing the entire vacuum pump, no modification is required, just replace it directly, saving you time and energy

Rank No. #3

A-Premium K04-015 Complete Turbo Turbocharger Kit, with Wastegate Actuator & Gasket, Compatible with Volkswagen Passat 1998-2003 & Audi A4 1997-2004, A4 Quattro 1998-2004, 1.8L

[Vehicle Fitment]: Compatible with Audi A4 1997-2004 L4 1.8L // A4 Quattro 1998-2004 L4 1.8L // Compatible with Volkswagen Passat 1998-2003 L4 1.8L
[Reference Number]: 5304-970-0015, 5304-988-0015, K04-2075EAC4.82KCAXK, K04-2075EAC4.83KCAXK
[Specification]: Turbo Model: K04-015; Wastegate Actuator Included: Yes; Gasket Included: Yes; Material: Alloy
[Turbocharger Features]: Turbo kit is equipped with wastegate actuator and turbo gaskets, and this compressor and turbine housing is made of high grade alloy to rapidly dissipate heat at extreme rotate speed, ultimately extending the service life of the product
[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted engine turbocharger. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Rank No. #4

AULINK 06J145100C Brake Booster Vacuum Pump ‎724807290 OE Replacement for 2009-2016 Audi A4 A4 A5 A6 Q5 TT Quattro Allroad Line4 2.0L

【Factory directly sale】Saving your cost,Professional tracking product quality and after-sales service.
【High Performance】Long-life working,the housing machined in CNC to ensure the accurate diamension.
【Strict Quality Control】Manufactured in TS16949 certified facilities,100% function and leakage tested.
【Perfect Fit】Including all necessary kits needed for easier installation.
【Warranty】2 Years or 50000 km.

Rank No. #5

Sprwinautummer Vacuum Pump Sealing Ring Gasket Replacement For AUDI A3 A4 A5 A6 A7 A8 Q3 Q5 TT TTRS SEAT SKODA VW GOLF JETTA PASSAT TIGUAN

【Material】 : Metal
【Part No.】 : 06H103121J,06H 103 121 J, 06K103121 ,06K 103 121,95810312100,958 103 121 00
【Other Part No.】 : 06K103121B, 06K 103 121 B, 06K103121C, 06K 103 121 C,01200400,DRM0908,443.020, 42450,115 262 ,WG1448720
【Size】 : STD
【Note】 : It is better that you send us VIN // chassis number to check if the part fit your car .

Last update on 2025-07-08 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: What is the vacuum system in an Audi A4?

A: A vacuum system in an internal combustion engine is the difference in air pressure between the engine’s intake manifold and Earth’s atmosphere. About Audi A4 The Audi A4 is now on its fourth generation, it all started with the B5 Audi A4 beginning in 1996 for the US market and ending in 2001.

Q: What kind of engine does an Audi A4 have?

A: The Audi A4 can be found in sedan, wagon and convertible body types with the wagon most commonly referred to as the Avant.The early model Audi A4’s were powered using a 1.8 liter 20 valve engines, there was also a 2.8L V6 12 valve option for the B5 A4. The Audi A4 continued as the B6 from 2002 to 2005 with totally new styling by Peter Schreyer.

Q: Where is the EVAP valve on an Audi A4 B6?

A: The main areas to check are above the intake air cleaner (red arrow), to the right side of the rear of the engine cover (yellow arrow), and to the rear of the intake manifold (green arrow) and the intake manifold itself (blue arrow). The area to the rear of the intake air box contains the EVAP valve (red arrow) and lines (yellow arrow).

Q: Where is the EGR line on an Audi A4?

A: The output line connects to the combi-valve (yellow arrow). At the rear of the engine you will find the combi-valve (red arrow) and a series of hoses and valves for the EGR system (yellow arrow). The lines should be checked for condition and replaced as needed.

2003 Audi A4 Vacuum Diagram