How to replace spark plugs correctly on Chevrolet Cobalt?

The replacement process begins by removing ignition coils followed by blowing water and debris from Spark Plug holes before working on the spark plugs. A 5/8 inch Spark Plug socket serves as the necessary tool for removing spark plugs and an alternative Spark Plug socket installation approach includes applying anti-seize compound only to the threads. Installation of new spark plugs must exclude anti-seize compound threads because excessive torque can break the threads of the cylinder head. The reinstallation of spark plugs requires a torque of 20 n.m (15 lb ft) while the gap should be measured to 1.1 mm (0.45 in). Gunshield compound needs to be applied onto Spark Plug boots while checking for corrosion before putting back ignition coils.

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 and Q&A

Spark Plug
12680075
Q: How to replace spark plugs correctly on Chevrolet Cobalt?
A:
The replacement process begins by removing Ignition Coils followed by blowing water and debris from Spark Plug holes before working on the spark plugs. A 5/8 inch Spark Plug socket serves as the necessary tool for removing spark plugs and an alternative Spark Plug socket installation approach includes applying anti-seize compound only to the threads. Installation of new spark plugs must exclude anti-seize compound threads because excessive torque can break the threads of the cylinder head. The reinstallation of spark plugs requires a torque of 20 n.m (15 lb ft) while the gap should be measured to 1.1 mm (0.45 in). Gunshield compound needs to be applied onto Spark Plug boots while checking for corrosion before putting back ignition coils.