Air Injection Pumps & Components
- URO Parts®Secondary Air Injection Pump MountSecondary Air Injection Pump Mount by URO Parts®. Make your vehicle operating quiet again by replacing your malfunctioning component with this top-notch emission control part. The dependable URO part will make your exhaust system work...Designed to replace your worn out exhaust partHelps to restore quiet vehicle operation$1.85 - $2.99
- ACDelco®GM Original Equipment™ Secondary Air Injection Bypass Valve Solenoid ConnectorGM Original Equipment™ Secondary Air Injection Bypass Valve Solenoid Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.28 - $29.89
- ACDelco®GM Original Equipment™ Secondary Air Injection Check Valve Solenoid ConnectorGM Original Equipment™ Secondary Air Injection Check Valve Solenoid Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$42.22
- ACDelco®GM Original Equipment™ Secondary Air Injection ConnectorGM Original Equipment™ Secondary Air Injection Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.96
- ACDelco®GM Original Equipment™ Secondary Air Injection Pipe GasketGM Original Equipment™ Secondary Air Injection Pipe Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$24.23
- ACDelco®GM Original Equipment™ Secondary Air Injection Pump Check Valve GasketGM Original Equipment™ Secondary Air Injection Pump Check Valve Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.03
- ACDelco®GM Original Equipment™ Secondary Air Injection Pump ConnectorGM Original Equipment™ Secondary Air Injection Pump Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.48 - $65.31
- ACDelco®GM Original Equipment™ Secondary Air Injection Pump HoseGM Original Equipment™ Secondary Air Injection Pump Hose by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$20.44 - $70.16
- ACDelco®GM Original Equipment™ Secondary Air Injection Pump RelayGM Original Equipment™ Secondary Air Injection Pump Relay by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.89 - $11.93
- ACDelco®GM Original Equipment™ Secondary Air Injection Relay ConnectorGM Original Equipment™ Secondary Air Injection Relay Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$36.36
- ACDelco®Genuine GM Parts™ Secondary Air Injection Check Valve Pipe AdapterGenuine GM Parts™ Secondary Air Injection Check Valve Pipe Adapter by ACDelco®. Designed utilizing the latest technology, this GM Original Equipment Emission Control Vacuum Harness Assembly by ACDelco features premium quality and will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$70.47 - $212.14
- ACDelco®Genuine GM Parts™ Secondary Air Injection Fresh Air Duct HoseGenuine GM Parts™ Secondary Air Injection Fresh Air Duct Hose by ACDelco®. Designed utilizing the latest technology, this Camshaft Position Sensor Interrupter by ACDelco features premium quality and will perform better than...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$39.31 - $76.48
- ACDelco®Genuine GM Parts™ Secondary Air Injection Pipe GasketGenuine GM Parts™ Secondary Air Injection Pipe Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$13.06 - $16.41
- ACDelco®Genuine GM Parts™ Secondary Air Injection Pump RelayGenuine GM Parts™ Secondary Air Injection Pump Relay by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$15.00 - $37.77
- ACDelco®Genuine GM Parts™ Secondary Air Injection Valve GasketGenuine GM Parts™ Secondary Air Injection Valve Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.82 - $7.98
- ACDelco®Gold™ Secondary Air Injection Fresh Air Duct HoseGold™ Secondary Air Injection Fresh Air Duct Hose by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$27.46 - $94.76
- ACDelco®Gold™ Secondary Air Injection RelayGold™ Secondary Air Injection Relay by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.50
- Dorman®OE Solutions™ Secondary Air Injection Pump MountOE Solutions™ Secondary Air Injection Pump Mount by Dorman®. This secondary air injection pump mount is designed to match the fit and function of the original mount on specified vehicles, and is engineered for durability and reliable...Direct replacement - this secondary air injection pump mount is designed to match the fit and function of the original mount on specified vehiclesRestores functionality - reliable replacement for an original cover that has failed due to corrosion$12.08 - $12.71
- Dorman®OE Solutions™ Secondary Air Injection Pump PulleyOE Solutions™ Secondary Air Injection Pump Pulley by Dorman®. This secondary air injection pump pulley is designed to match the fit and function of the original pulley on specified applications. Made of quality materials, it is...Direct replacement - this secondary air injection pump pulley is designed to match the fit and function of the original pulley on specified applicationsRestores functionality - reliable replacement for an original pulley that has failed due to fatigue$11.43 - $37.90
- Genuine®Secondary Air Injection Check Valve Cap NutSecondary Air Injection Check Valve Cap Nut by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials...Made with precision and quality in mindDesigned to meet your specific needs$8.57 - $8.95
- Genuine®Secondary Air Injection HoseSecondary Air Injection Hose by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$11.01 - $310.79
- Genuine®Secondary Air Injection Pipe GasketSecondary Air Injection Pipe Gasket by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$2.98 - $20.35
- Genuine®Secondary Air Injection Pump FilterSecondary Air Injection Pump Filter by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$37.71 - $91.00
- Genuine®Secondary Air Injection Pump GasketSecondary Air Injection Pump Gasket by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$4.05 - $7.10
- Genuine®Secondary Air Injection Pump RelaySecondary Air Injection Pump Relay by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$21.85 - $34.82
- Genuine®Secondary Air Injection Pump Rubber MountSecondary Air Injection Pump Rubber Mount by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials...Made with precision and quality in mindDesigned to meet your specific needs$11.02 - $20.18
- Genuine®Secondary Air Injection SensorSecondary Air Injection Sensor by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using...Made with precision and quality in mindDesigned to meet your specific needs$304.32 - $324.26
- Mopar®Secondary Air Injection Pump BoltSecondary Air Injection Pump Bolt by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.30 - $57.79
- Mopar®Secondary Air Injection Pump HoseSecondary Air Injection Pump Hose by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$21.74 - $605.80
- Mopar®Secondary Air Injection Tube ClampSecondary Air Injection Tube Clamp by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$1.38 - $15.41
The Secondary Air Injection System, also known as the Air Injection Reactor (AIR) system, pumps fresh air into the exhaust system to cause further oxidation of unburned fuel in the exhaust, reducing Hydrocarbons (HC) and Carbon Monoxide (CO) emissions. The system includes an electric or belt-driven air pump, an air control valve, a vacuum switch, a diverter valve, one-way check valves, and hoses and tubing.
Pressurized air is generated by the air pump and fed into the exhaust system near the exhaust ports (in the cylinder head or the exhaust manifold) and at the catalytic converter, but not at the same time. The air control valve routes air to the head/manifold when the engine is warming up, to reduce emissions from the rich air/fuel mixture needed for a cold engine, and to heat the exhaust to bring the oxygen (O2) sensor and catalytic converter up to temperature sooner. When normal operating temperature is reached, the vacuum switch signals the air control valve to route air to the catalytic converter, where the injected air helps with the oxidation of HC and CO.
During deceleration, the closed throttle causes a rich air/fuel mixture. If air was injected into this mixture, a potentially component damaging backfire or explosion could result. To prevent this, a vacuum signal directs the diverter valve to route the compressed air to atmosphere during deceleration. The one-way check valves prevent hot exhaust gas from entering and damaging the air pump. These valves are located before the exhaust manifold and before the catalytic converter. When air is supplied to the component behind the valve, the exhaust manifold for example, the valve opens under the air pressure. When air is routed to the catalytic converter, the check valve closes in response to exhaust backpressure.
Although system diagnostics will vary according to make and model year, certain inspections are universal. Check the hoses and one-way check valves for evidence of burning, which can result in exhaust leaks and exhaust entering the system. On many air pumps, there is a centrifugal filter behind the pulley that can be replaced. Most modern systems will set Diagnostic Trouble Codes (DTCs) in the Engine Control Module (ECM) if there is a problem in the system. If air is not pumped to the head/manifold during warm-up, there will be excessive emissions and reduced fuel economy. Correspondingly, if air is pumped to the head/manifold when the engine is at normal operating temperature, the excess air in the system will be interpreted by the O2 sensor as a lean condition. In response, the ECM will create a rich/air fuel mixture, reducing fuel economy and causing the vehicle to fail an emissions test.