Spark Plug Wires

When you want to go somewhere far away, it is as simple as turning the key in your 2003 Cadillac Escalade’s ignition and then comfortably driving to where you need to go. However, this simplicity can quickly become a nightmare when certain parts of the vehicle break down, because turning the key may result in nothing happening, or the vehicle will not run as smoothly. When this happens, there are a number of parts to check and one of them is the spark plug wires.

The engine in your 2003 Cadillac Escalade is basically designed to turn fuel into mini-explosions inside each cylinder, which will cause the parts to move in the right order, at the right speed, so your wheels start or continue turning. The spark is provided by the spark plug that needs to get power from somewhere. This is where spark plug wires designed to carry high voltage over quite a long distance to the spark plug enter the picture.

As you would imagine, the spark plug wires need to be very strong to handle the amount of voltage moving along them. They also need to be able to live among serious heat and vibrations, because they are so close to the engine that they will actually touch it. To protect each wire from all of these problems and more, you will find thick insulation wrapping each one to make it perhaps the biggest and widest wire anywhere on your 2003 Cadillac Escalade. The insulation is usually made of substances like rubber or particularly tough plastics to handle heat, vibration and liquids like oil.

While the insulation is some of the thickest you can find on any wiring, you will of course discover problems with wear and tear when the vehicle reaches a certain age. The insulation is not designed to live forever, since that would be impossible, and as it begins to break down problems will become more and more serious. One of the most common problems is that the electrical current is able to escape before reaching the spark plug, and this means the spark plug is unable to provide enough spark to cause all of the fuel to burn efficiently.

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EDELBROCK 22715
Please Note:

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EDELBROCK 22715 Max-Fire Series Ultra-Spark 50 Spark Plug Wires
for 2003 Cadillac Escalade BASE

$116.09

Save: $15.14
Sale Price:

$100.95

Estimated Ship Date: Today

In Stock - 4 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8
 
Spark Plug Wire Set
Square Coil
 
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8 Spark Plug Wire Set
Square Coil
,
EDELBROCK 22716
Please Note:

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EDELBROCK 22716 Max-Fire Series Ultra-Spark 50 Spark Plug Wires w/ Metal Sleeves
for 2003 Cadillac Escalade BASE

$116.09

Save: $15.14
Sale Price:

$100.95

Estimated Ship Date: Today

In Stock - 5 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8
 
Spark Plug Wire Set
Round Coil
 
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8 Spark Plug Wire Set
Round Coil
,
MOROSO 73705
Please Note:

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MOROSO 73705 Ultra 40 Race Wire Coil On Plug Unsleeved
for 2003 Cadillac Escalade BASE

$105.37

Save: $13.74
Sale Price:

$91.63

Estimated Ship Date: Today

In Stock - 1 New In Stock
EngineFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8
 
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8
,
FAST 255-2420
Please Note:

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FAST 255-2420 Custom Fit Firewire 8.5MM Spark Plug Wire Set For GM LS1/LS6 Truck
for 2003 Cadillac Escalade BASE

$80.98

Save: $10.56
Sale Price:

$70.42

Estimated Ship Date: Today

In Stock - 4 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
5.3L V8
 
Spark Plug Wire Set
 
2003 Cadillac Escalade BASE equipped with
5.3L V8 Spark Plug Wire Set
,
MSD 5574
Please Note:

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MSD 5574 Street Fire Spark Plug Wire Set HEI Kevlar Tailored Heli-Core 8mm
for 2003 Cadillac Escalade BASE

$69.54

Save: $9.07
Sale Price:

$60.47

Estimated Ship Date: Today

In Stock - 127 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8
 
Spark Plug Wire Set
Low Resistance Conductor
Black Insulation/Boots
 
2003 Cadillac Escalade BASE equipped with
6.0L V8 Spark Plug Wire Set
Low Resistance Conductor
Black Insulation/Boots
,
NGK TR5AHX
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NGK TR5AHX Spark Plug-Ruthenium HX
for 2003 Cadillac Escalade BASE

$15.10

Save: $1.97
Sale Price:

$13.13

Estimated Ship Date: Today

In Stock - 12 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV
 
[Ruthenium HX Spark Plug] Gap 0.040"
Quantity needed per vehicle: 8
Sport Utility 4-Door
 
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV [Ruthenium HX Spark Plug] Gap 0.040"
Quantity needed per vehicle: 8
Sport Utility 4-Door
,
NGK 7397
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NGK 7397 Spark Plug-Iridium IX
for 2003 Cadillac Escalade BASE

$10.42

Save: $1.36
Sale Price:

$9.06

Estimated Ship Date: Today

In Stock - 58 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV
 
Iridium IX Spark Plug
Gap 0.040
Sport Utility 4-Door
 
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV Iridium IX Spark Plug
Gap 0.040
Sport Utility 4-Door
,
AUTOLITE AP5245
Please Note:

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AUTOLITE AP5245 Spark Plug-Platinum
for 2003 Cadillac Escalade BASE

$5.96

Save: $0.78
Sale Price:

$5.18

Estimated Ship Date: Today

In Stock - 48 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV
 
[Platinum Spark Plug] .040/1.0mm
Quantity needed per vehicle: 8
Sport Utility 4-Door
 
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV [Platinum Spark Plug] .040/1.0mm
Quantity needed per vehicle: 8
Sport Utility 4-Door
,
NGK 2238
Please Note:

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NGK 2238 Spark Plugs
for 2003 Cadillac Escalade BASE

$5.06

Save: $0.66
Sale Price:

$4.40

Estimated Ship Date: Today

In Stock - 86 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8
 
Gap 0.040": Gap 0.040"
Engine VIN Code: T
 
2003 Cadillac Escalade BASE equipped with
6.0L V8,
5.3L V8 Gap 0.040": Gap 0.040"
Engine VIN Code: T
,
AUTOLITE 5245
Please Note:

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Autolite 5245 Spark Plug
for 2003 Cadillac Escalade BASE

$4.86

Save: $0.63
Sale Price:

$4.23

Estimated Ship Date: Today

In Stock - 48 New In Stock
EngineFit NotesFitment Notes
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV
 
[Copper Resistor Spark Plug] .040/1.0mm
Quantity needed per vehicle: 8
Sport Utility 4-Door
 
2003 Cadillac Escalade BASE equipped with
6.0L V8 Gas OHV,
5.3L V8 Gas OHV [Copper Resistor Spark Plug] .040/1.0mm
Quantity needed per vehicle: 8
Sport Utility 4-Door