Emission Components for 2004 Audi A4
No.
Part # / Description / Price
Price
1
Secondary Air Injection Pump 
Audi
Audi Description: Audi part number 06A-959-253-E, the factory Secondary Air Injection Pump, keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. Buying genuine keeps the vehicle's original fit, finish, and warranty coverage intact. Fitment varies by model year, trim, and option content, so verify before ordering.
MSRP $976.91
$803.26
MSRP $976.91
$803.26
3
Secondary Air Injection Pump Insulator Audi
Audi Description: This genuine Audi Secondary Air Injection Pump Insulator, part number 06A-133-567-F, keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. Genuine Audi tooling and materials mean it installs into the original mounting points without modification. Fitment varies by model year, trim, and option content, so verify before ordering.
MSRP $15.11
$10.28
MSRP $15.11
$10.28
4
Secondary Air Injection Pump Hose Audi
Audi Description: 3.0L, #1. To air cleaner. A4. 3.0l. Cabriolet A4. 1.8l. This factory Audi Secondary Air Injection Pump Hose (8E0-133-889-E) keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these c ...
9
Gasket Audi
Audi Positions: Left
Description: Genuine Audi Gasket 078-131-120-K. This original equipment component creates the sealing interface between two components, and because a seal is the cheapest part in most assemblies but the most common source of leaks, using the correct specification is what keeps the repair permanent. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Confirm fitment against your vehicle identification number before ordering.
MSRP $14.96
$10.17
MSRP $14.96
$10.17
10
Exhaust Gas Re-Circulation (Egr) Valve Spacer Plate Audi
Audi Positions: Right
Description: 3.0L. Adapter. 4.2L.
12
Secondary Air Injection Control Valve Gasket Audi
Audi Positions: Right
Description: 3.0L. The original equipment Audi Secondary Air Injection Control Valve Gasket supplied under part number 06C-131-120-B creates the sealing interface between two components, and because a seal is the cheapest part in most assemblies but the most common so ...
MSRP $20.00
$13.60
MSRP $20.00
$13.60
13
Secondary Air Injection Control Valve Gasket Audi
Audi Positions: Left
Description: 3.0L.
Secondary Air Injection Control Valve Gasket.
Secondary Air Injection Control Valve Gasket.
14
Vapor Canister Purge Solenoid Audi
Audi Positions: Right
Description: Genuine Audi Vapor Canister Purge Solenoid 037-906-283-C. This original equipment component keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. As a genuine Audi part it carries factory part numbering, original fitment data, and Audi parts warranty coverage. Fitment varies by model year, trim, and option content, so verify before ordering.
MSRP $216.65
$163.79
MSRP $216.65
$163.79
15
Vapor Canister Audi
Audi Description: Cabriolet A4. All. S4. 4.2L. 2.0L. 3.2L. 1.8L. 3.0L. This factory Audi Vapor Canister (8E0-201-799-A) keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. Ordering genuine avoids the fit and durability compromises that come with aftermarket substitutes. Use the fitment guide or contact our parts team to confirm the correct application.
17
Evaporative Emissions System Lines Audi
Audi Description: Vapor hose. 3.0L. 1.8L. 4.2L. Audi part number 8E0-201-946-H, the factory Evaporative Emissions System Lines, keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. Genuine Audi tooling and materials mean it installs into the original mounting points without modification. Fitment varies by model year, trim, and option content, so verify before ordering.
MSRP $100.00
$75.90
MSRP $100.00
$75.90
18
Evaporative Emissions System Lines Audi
Audi Description: Pressure pipe. Pressure line. 3.0L. 2.0L. 1.8L. 3.2L. 4.2L, A4/S4. Listed under Audi part number 8H0-201-946-A, this Evaporative Emissions System Lines keeps the exhaust and evaporative streams within regulated limits, and because the engine management st ...
MSRP $317.66
$243.00
MSRP $317.66
$243.00
19
Evaporative Emissions System Leak Detection Pump Audi
Audi Description: 2.0L. 3.0L. 3.2L. Cabriolet A4. 1.8L. 4.2L, A4/S4. Cabriolet S4. 4.2L, RS4. This factory Audi Evaporative Emissions System Leak Detection Pump (8H0-906-201-D) keeps the exhaust and evaporative streams within regulated limits, and because the engine manage ...
20
Evaporative Emissions System Leak Detection Pump Bracket Audi
Audi Notes: PARTS: Part included with leak detection pump.
Description: Leak detect pump,bracket. 2.0L. 3.0L. 1.8L. 3.2L. 4.2L, A4/S4. 4.2L, RS4. This factory Audi Evaporative Emissions System Leak Detection Pump Bracket (8H0-201-827) is a small but load bearing element of the assembly, and using the factory specification mat ...
MSRP $43.18
$28.91
MSRP $43.18
$28.91
21
Evaporative Emissions System Leak Detection Pump Bracket Audi
Audi Notes: PARTS: Part included with leak detection pump.
Description: This genuine Audi Evaporative Emissions System Leak Detection Pump Bracket, part number 8D0-201-827-C, is a small but load bearing element of the assembly, and using the factory specification matters because thread pitch, coating, and clamp load are engineered for the joint rather than generic. As a genuine Audi part it carries factory part numbering, original fitment data, and Audi parts warranty coverage. Use the fitment guide or contact our parts team to confirm the correct application.
MSRP $23.18
$15.82
MSRP $23.18
$15.82
22
Evaporative Emissions System Leak Detection Pump Filter Audi
Audi Description: Listed under Audi part number 8D0-906-321, this Evaporative Emissions System Leak Detection Pump Filter keeps the exhaust and evaporative streams within regulated limits, and because the engine management strategy adapts around these components, a degraded unit affects drivability as well as emissions compliance. As a genuine Audi part it carries factory part numbering, original fitment data, and Audi parts warranty coverage. Confirm fitment against your vehicle identification number before ordering.
MSRP $119.99
$91.07
MSRP $119.99
$91.07
23
Evaporative Emissions System Lines Audi
Audi Notes: PARTS: Part included with leak detection pump.
Description: Filter hose. 3.2L. 2.0L. 3.0L. 4.2L, 2007-11. 1.8L. 4.2L, A4/S4. Connector. 4.2L, 2005-06. 4.2L, RS4. This factory Audi Evaporative Emissions System Lines (8E0-906-272-C) keeps the exhaust and evaporative streams within regulated limits, and because the e ...
MSRP $57.32
$46.05
MSRP $57.32
$46.05
24
Clamp Audi
Audi Notes: PARTS: Part included with leak detection pump.
Description: The original equipment Audi Clamp supplied under part number N-102-020-01 is a small but load bearing element of the assembly, and using the factory specification matters because thread pitch, coating, and clamp load are engineered for the joint rather than generic. As a genuine Audi part it carries factory part numbering, original fitment data, and Audi parts warranty coverage. Fitment varies by model year, trim, and option content, so verify before ordering.
MSRP $0.70
$0.48
MSRP $0.70
$0.48
25
Secondary Air Injection Pump Hose Audi
Audi Notes: PARTS: Part included with leak detection pump.
Description: A4 Cabriolet. Pressure hose. 3.0L. 2.0L. 3.2L. 4.2L, A4/S4. 1.8L. Listed under Audi part number 8H0-201-945, this Secondary Air Injection Pump Hose keeps the exhaust and evaporative streams within regulated limits, and because the engine management strate ...
MSRP $141.67
$107.53
MSRP $141.67
$107.53
26
Vacuum Reservoir Audi
Audi Description: This genuine Audi Vacuum Reservoir, part number 443-131-541, encloses and protects the component behind it, keeping debris, moisture, and heat away from hardware that was not designed to be exposed while also finishing the visible surface. Buying genuine keeps the vehicle's original fit, finish, and warranty coverage intact. Confirm fitment against your vehicle identification number before ordering.
MSRP $56.48
$45.38
MSRP $56.48
$45.38
27
Oxygen Sensor Audi
Audi Positions: Right
Description: This genuine Audi Oxygen Sensor, part number 1K0-998-262-F, converts a physical condition into a signal the engine control module uses to set fueling and timing, so a drifting sensor degrades performance long before it triggers a hard fault. Genuine Audi tooling and materials mean it installs into the original mounting points without modification. Check the applications list or supply your VIN to confirm this part fits your vehicle.
MSRP $413.33
$316.20
MSRP $413.33
$316.20
28
Oxygen Sensor Audi
Audi Positions: Right
Description: This genuine Audi Oxygen Sensor, part number 1K0-998-262, converts a physical condition into a signal the engine control module uses to set fueling and timing, so a drifting sensor degrades performance long before it triggers a hard fault. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Confirm fitment against your vehicle identification number before ordering.
MSRP $374.98
$286.86
MSRP $374.98
$286.86