How to replace a spark plug on Cadillac STS?

The maintenance process should start with turning off the ignition and taking out the Ignition Coil (Ignition Coil). Before installing the new Spark Plug clean its recess area thoroughly to avoid damages that foreign matter could cause inside the Cylinder Head because of the thread chaser usage for cleaning the threads. Before working on a hot engine maintain pressure from compressed air to eliminate contaminants from the Spark Plug chamber until the motor temperatures become safe for plug removal. Install only the recommended spark plugs designed for the vehicle since substituting them with different heat levels causes significant damage to the engine. The proper engine performance requires the Spark Plug gap to match the ignition system specifications and you must verify this gap by using a round feeler gauge for all new and reconditioned spark plugs. Use a thread chaser if needed during the Cylinder Head installation of the Spark Plug to prevent overheating or thread damage by ensuring complete thread seating with smooth entry. Follow these instructions to insert the Spark Plug then tighten it to 20 nm (15 lb ft). The Ignition Coil (Ignition Coil) will return afterwards.

OEM Cadillac STS Spark Plug

Ignition Spark Plug

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6 Spark Plugs found

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Cadillac STS Spark Plug Part Number: 19300872
$7.57 MSRP: $13.52
You Save: $5.95 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12597464, 92220447
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS Spark Plug Part Number: 12681660
$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, Spark Ignition; Spark Plug,Glow
- Replaces: 12622561
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Spark Plug Part Number: 19301814
$9.53 MSRP: $17.02
You Save: $7.49 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Replaces: 19256624, 12565996
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Spark Plug Part Number: 12592619
$7.34 MSRP: $13.10
You Save: $5.76 (44%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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Cadillac STS Spark Plug Part Number: 12571535
Product Specifications
- Replaces: 12561466
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Spark Plug Part Number: 12571533
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Cadillac STS | Base | 8 Cyl 4.6 L GAS

Cadillac STS Spark Plug

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The Spark Plug is widely known and regarded as an important part that increases Cadillac STS vehicles' performance and durability levels. Because the Spark Plug is intended to create a fire in the mixture that has been taken into the engine's combustion chamber, it plays a crucial role in the combustion itself, which is the most vital process for proper work of the engine. Spark plugs that Cadillac has used over the years include copper/nickel, platinum, double platinum, and iridium each giving different services in aspects of durability and efficiency. Spark Plug is designed to let it perform in different models of the STS of automobiles without any worry of misfiring. Therefore, proper servicing of the Cadillac STS, especially the replacement of Spark Plug, is important in order to avoid the misfire of the engine thus leading to improvement in efficiency and reduced cases of accidents. However, the Spark Plug has been found to be unique in the market mainly because of the enhanced designs and quality material in its construction which makes it to have long duration before it is replaced due to wears out and it does not readily collect carbon. This reliability is especially significant for those clients that want to have powerful Cadillac STS cars with reasonable safety coefficients. Hence, Spark Plug plays its part in not just the horsepower needed to move Cadillac STS but also a part of the company's way of redefining luxury cars. Therefore, the Spark Plug is a vital component that helps make every drive of the Cadillac STS what it was designed to be, smooth and powerful.

Cadillac STS Spark Plug Parts and Q&A

Spark Plug
12681660
Q: How to replace a spark plug on Cadillac STS?
A:
The maintenance process should start with turning off the ignition and taking out the Ignition Coil (Ignition Coil). Before installing the new Spark Plug clean its recess area thoroughly to avoid damages that foreign matter could cause inside the Cylinder Head because of the thread chaser usage for cleaning the threads. Before working on a hot engine maintain pressure from compressed air to eliminate contaminants from the Spark Plug chamber until the motor temperatures become safe for plug removal. Install only the recommended spark plugs designed for the vehicle since substituting them with different heat levels causes significant damage to the engine. The proper engine performance requires the Spark Plug gap to match the ignition system specifications and you must verify this gap by using a round feeler gauge for all new and reconditioned spark plugs. Use a thread chaser if needed during the Cylinder Head installation of the Spark Plug to prevent overheating or thread damage by ensuring complete thread seating with smooth entry. Follow these instructions to insert the Spark Plug then tighten it to 20 nm (15 lb ft). The Ignition Coil (Ignition Coil) will return afterwards.