What is the role of the Secondary Air Injection system in reducing emissions during cold starts?

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

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

2 Secondary Air Injection Check Valves found

View related parts
Chevrolet Cobalt Valve Kit, Secondary Air Injection Check
Part Number: 12623091
$155.21 MSRP: $322.28
You Save: $167.07 (52%)
Ships in 1-2 Business Days
ADD TO CART
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
View related parts
Chevrolet Cobalt Valve Assembly, Secondary Air Injection Shutoff & C
Part Number: 12619076
$209.31 MSRP: $434.60
You Save: $225.29 (52%)
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 Parts Questions & Experts Answers

Valve Kit, Secondary Air Injection Check
12623091
Q: What is the role of the Secondary Air Injection system in reducing emissions during cold starts?
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.