What is the role of the Secondary Air Injection Check Valve and Secondary Air Injection Pump in reducing emissions during cold starts on Chevrolet Cobalt?

The Secondary Air Injection system reduces emissions during cold starts. It includes an AIR pump, shut-off valve, and pressure sensor. Filtered air goes from the engine's air filter housing to the pump, then to the shut-off/pressure-sensor assembly on the exhaust manifold. A scan tool is recommended for a thorough inspection. The AIR solenoid/shut-off/pressure sensor should be replaced as a complete assembly.

Genuine Chevrolet Cobalt Secondary Air Injection Check Valve

SAI Check Valve

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2 Secondary Air Injection Check Valves found

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Chevrolet Cobalt Valve Kit, Secondary Air Injection Check
Part Number: 12623091
$160.61 MSRP: $327.66
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Product Specifications
- Other Name: VALVE KIT, Emission Control System; Check Valve
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2010 Chevrolet Cobalt | 2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 4 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR | 4 Cyl 2.2L
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Chevrolet Cobalt Valve Assembly, Secondary Air Injection Shutoff & C
Part Number: 12619076
$217.68 MSRP: $444.08
You Save: $226.40 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE, Emission Control System; Check Valve
- Replaces: 12594394
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Chevrolet Cobalt | 2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL THREE (SS) 2 DOOR, LEVEL THREE (SS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR | 4 Cyl 2.2L

Chevrolet Cobalt Secondary Air Injection Check Valve

In Chevrolet Cobalt vehicles the Secondary Air Injection Check Valve functions as the vital element of their secondary air injection system dedicated to lowering emission levels by sending fresh air through the exhaust system. The oxidation of unburned fuel gets improved through this process which decreases both hydrocarbons (HC) and carbon monoxide (CO) emissions. The Secondary Air Injection Check Valve mechanism enables pressurized air from the air pump to enter the exhaust system simultaneously preventing exhaust gases from harming the pump. The different types of Chevrolet Secondary Air Injection Check Valve that exist within the Cobalt lineup are installed ahead of the exhaust manifold and catalytic converter for each model type. During engine operation these Chevrolet Cobalt Secondary Air Injection Check Valve activate automatically according to exhaust backpressure but also enable airflow through pressure changes. System inspections should be performed regularly to stop exhaust leaks which protect both system output and operational efficiency because improper operation generates more emissions and decreases fuel economy for Chevrolet models.

Each OEM Chevrolet Cobalt Secondary Air Injection Check Valve we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Cobalt Secondary Air Injection Check Valve Parts Questions & Experts Answers

Valve Assembly, Secondary Air Injection Shutoff & C
12619076
Q: What is the role of the Secondary Air Injection Check Valve and Secondary Air Injection Pump in reducing emissions during cold starts on Chevrolet Cobalt?
A:
The Secondary Air Injection system reduces emissions during cold starts. It includes an AIR pump, shut-off valve, and pressure sensor. Filtered air goes from the engine's air filter housing to the pump, then to the shut-off/pressure-sensor assembly on the exhaust manifold. A scan tool is recommended for a thorough inspection. The AIR solenoid/shut-off/pressure sensor should be replaced as a complete assembly.