How to replace a spark plug safely and effectively on 2005 Cadillac CTS?

Replacement This task can be performed by switching the ignition off and unscrewing the ignition coil. Wipe off the spark plug cavityarounds and wipe out the recess. Always wait to take the engine down to a cooler temperature. Install designated spark plugs and measure the gap using the feeler gauge. Installation should be done well to ensure it will not be damaged.

OEM 2005 Cadillac CTS Spark Plug

Ignition Spark Plug

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2 Spark Plugs found

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2005 Cadillac CTS Spark Plug Part Number: 12681665
$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
- Replaced by: 12681664
- Replaces: 25162555, 12607234, 25315018, 25162556, 19256067, 89017883
- Item Weight: 1.10 Pounds
- Item Dimensions: 3.8 x 1.1 x 6.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12681665
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2005 Cadillac CTS Submodels:
- V | 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS
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2005 Cadillac CTS Spark Plug Part Number: 19301814
$9.53 MSRP: $17.02
You Save: $7.49 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Replaces: 19256624, 12565996
- Item Weight: 0.70 Pounds
- Item Dimensions: 4.3 x 4.0 x 1.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 6
- SKU: 19301814
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2005 Cadillac CTS Submodels:
- Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS

2005 Cadillac CTS Spark Plug

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2005 Cadillac CTS Spark Plug Parts and Q&A

Q: How to replace a spark plug safely and effectively on 2005 Cadillac CTS?
A: Replacement This task can be performed by switching the ignition off and unscrewing the ignition coil. Wipe off the spark plug cavityarounds and wipe out the recess. Always wait to take the engine down to a cooler temperature. Install designated spark plugs and measure the gap using the feeler gauge. Installation should be done well to ensure it will not be damaged.