How to replace spark plugs safely and effectively on Chevrolet Cobalt?

Engine replacement must take place when the system has cooled to avoid hurtful contact to aluminum cylinder heads. First access the ignition coil housing and then install a Spark Plug socket for removing the spark plugs while clearing all water and debris from the Spark Plug holes using compressed air. Check the spark plugs for potential problems during the inspection process. You should use a round wire type Spark Plug gap gage to gap the new plug and set it at 1.14 mm (0.045 in). When installing the spark plugs through a Spark Plug socket users should avoid applying anti-seize compound since it could lead to excessive torque that damages the Cylinder Head threads. Finish by putting back the ignition coil housing after properly tightening the spark plugs to 20 n.m (15 lb ft).

OEM Chevrolet Cobalt Spark Plug

Ignition Spark Plug

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Chevrolet Cobalt Spark Plug Part Number: 12681661
$9.50 MSRP: $16.96
You Save: $7.46 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 12607280
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Chevrolet Cobalt | Base, LS, LT, LTZ | 4 Cyl 2.2 L GAS
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Chevrolet Cobalt Spark Plug Part Number: 12681658
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 12617309, 12590701, 12620540
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS
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Chevrolet Cobalt Spark Plug Part Number: 12681663
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12598004, 12625058
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 Chevrolet Cobalt | Base, LS, LT, LTZ, Sport, SS | 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
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Chevrolet Cobalt Spark Plug Part Number: 12680075
$8.15 MSRP: $14.56
You Save: $6.41 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug,Glow
- Replaces: 12610767, 12787099
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS

Chevrolet Cobalt Spark Plug

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The Spark Plug of Chevrolet Cobalt vehicles is mainly tasked with the responsibility of igniting the fuel/air mixture in the combustion chamber and enabling the smooth operation of the vehicle's engine. Continuous use of the plug exposes it to chemicals from combustion that can cause deterioration thus have a shorter life cycle. Regarding the time for spark plug replacement, one or several misfires and unstable idling signal that a Spark plug is faulty and should be changed. Since the conditions in each cylinder may not be the same, it was advised that all spark plugs should be replaced to avoid future problems. Special constructions of spark plugs are available, like the multiple ground electrode type, or the surface-discharge type which can improve ignition and longevity of plugs in Chevrolet Cobalt cars.

Chevrolet Cobalt Spark Plug Parts Questions & Experts Answers

Spark Plug
12681661
Q: How to replace spark plugs safely and effectively on Chevrolet Cobalt?
A:
Engine replacement must take place when the system has cooled to avoid hurtful contact to aluminum cylinder heads. First access the ignition coil housing and then install a Spark Plug socket for removing the spark plugs while clearing all water and debris from the Spark Plug holes using compressed air. Check the spark plugs for potential problems during the inspection process. You should use a round wire type Spark Plug gap gage to gap the new plug and set it at 1.14 mm (0.045 in). When installing the spark plugs through a Spark Plug socket users should avoid applying anti-seize compound since it could lead to excessive torque that damages the Cylinder Head threads. Finish by putting back the ignition coil housing after properly tightening the spark plugs to 20 n.m (15 lb ft).