Emission Systems for 2005 Audi A4
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Secondary Air Injection Pump
Dorman
306-029
This secondary air injection pump is designed to match the fit and function of the original pump on specified applications. Made of...
Fits Your Vehicle
Oxygen Sensor
DELPHI
ES10920
Delphi's ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We...
Positions: Front
$133.67
Fits Your Vehicle
Oxygen Sensor
DELPHI
ES20168
Delphi's ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We...
Positions: Rear Left, Rear Right
$80.98
Fits Your Vehicle
Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 36.42
Denso
234-4809
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision...
Positions: Downstream Right
$78.63
Fits Your Vehicle
Intake Manifold Actuator Control Solenoid
Dorman
667-108
This engine intake manifold runner solenoid is designed to match the fit and function of the original solenoid on specified vehicles, and...
$100.14
Fits Your Vehicle
30 AMP 12 Volt 4 Pin Universal Relay
Dorman
84601
This relay connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality...
$7.96
Fits Your Vehicle
Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 24.61
Denso
234-4808
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision...
Positions: Downstream Left
$89.35
Fits Your Vehicle
Evaporative Emissions Purge Solenoid Valve
Dorman
911-800
Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the original...
$40.27
Fits Your Vehicle
Oxygen Sensor
Spectra Premium
OS5026
Innovative
engineering, manufacturing technology and quality control ensure that Spectra
Premium...
Positions: Downstream Left, Downstream Right
Fits Your Vehicle
Secondary A.I.R. Combination Valve
Dorman
911-971
This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is...
Positions: Right
Fits Your Vehicle
Combination Valve
Dorman
911-970
This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is...
Positions: Left
Fits Your Vehicle
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