How to replace a spark plug on Cadillac Escalade EXT?

You need to start this replacement process by twisting the plug wire boot by 1/2 turn then pull only on the boot. A brush or compressed air should be used to clean the Spark Plug area from dirt before performing the next step. Each Spark Plug should be placed in its designated cylinder-tray before moving on to the next plug replacement. The correct position of the Spark Plug washer must be established during installation while you check and adjust the Spark Plug gap if needed. Use hand power to position the Spark Plug in its respective cylinder before tightening it to 15 n.m (11 lb ft). To complete the installation you should fix the Spark Plug wire and check its correct placement by applying pressure on each boot to ensure proper contact before reinstalling any loose boot.

OEM Cadillac Escalade EXT Spark Plug

Ignition Spark Plug

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5 Spark Plugs found

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Cadillac Escalade EXT Glow Plug
Part Number: 12639701
$25.20 MSRP: $45.00
You Save: $19.80 (44%)
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Glow; Diesel Glow Plug; Glow Plug, Spark Ignition
- Replaces: 97364968
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Cadillac Escalade EXT | Base | 8 Cyl 6.0 L GAS
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Cadillac Escalade EXT Spark Plug
Part Number: 12681665
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-3 Business Days
ADD TO CART
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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Cadillac Escalade EXT | Base | 8 Cyl 6.0 L GAS
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Cadillac Escalade EXT Glow Plug
Part Number: 97326305
$24.56 MSRP: $43.86
You Save: $19.30 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Spark Ignition; Diesel Glow Plug
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Cadillac Escalade EXT | Base | 8 Cyl 6.0 L GAS
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Cadillac Escalade EXT Glow Plug
Part Number: 97226202
$19.63 MSRP: $35.06
You Save: $15.43 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Glow Plug, Spark Ignition
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2003 Cadillac Escalade EXT | Base | 8 Cyl 6.0 L GAS
View related parts
Cadillac Escalade EXT Spark Plug
Part Number: 12621258
Product Specifications
- Replaces: 12571164, 12563707, 12609877
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 Cadillac Escalade EXT | Base, Luxury, Premium | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS

Cadillac Escalade EXT Spark Plug

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Cadillac Escalade EXT Spark Plug Parts Questions & Experts Answers

Spark Plug
12621258
Q: How to replace a spark plug on Cadillac Escalade EXT?
A: You need to start this replacement process by twisting the plug wire boot by 1/2 turn then pull only on the boot. A brush or compressed air should be used to clean the Spark Plug area from dirt before performing the next step. Each Spark Plug should be placed in its designated cylinder-tray before moving on to the next plug replacement. The correct position of the Spark Plug washer must be established during installation while you check and adjust the Spark Plug gap if needed. Use hand power to position the Spark Plug in its respective cylinder before tightening it to 15 n.m (11 lb ft). To complete the installation you should fix the Spark Plug wire and check its correct placement by applying pressure on each boot to ensure proper contact before reinstalling any loose boot.