What Does A Spark Plug Do
Spark plugs can make or break your engine’s performance. Understand how they work, how to recognize a faulty one, and get expert advice on choosing the right spark plug for better engine health.
Jul 21, 2026
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Cadillac DeVille Spark Plug Wire
28 itemsMisfires, rough idle, or weak acceleration can start with aging ignition wires. Replace your spark plug wires set to help deliver steady spark and restore smoother engine performance.
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A-Premium®Part # APSPW525
8 Pcs Spark Plug Wire Set for Cadillac DeVille Eldorado 1995-1999 Seville 1995-1997
4.555 Reviews
$58.99
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3-year warranty
90 days free return
Fits 1995 - 1997 Cadillac Seville, 1995 - 1999 Cadillac DeVille, 1995 - 1999 Cadillac Eldorado
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
Quantity8
Part interchange
12173402, 12192049, 27856, 6718050
ConditionNew
item #1016V81Z
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DelphiPart # XS10207
Spark Plug Wire Set - Delphi XS10207
4.539 Reviews
$61.99
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3-year warranty
90 days free return
Fits 1989-1991 Cadillac Commercial Chassis, 1989-1992 Cadillac Allante, 1989-1992 Cadillac Eldorado, 1989-1992 Cadillac Fleetwood, 1989-1992 Cadillac Seville, 1989-1993 Cadillac DeVille, 1992-1993 Cadillac Commercial Chassis, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1994-1995 Cadillac DeVille
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Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
XS10207, 2X1126, QW887, 628B, 9628B, 700397, 118010, 35-PF87823,
...View moreitem #1001WEHC
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DelphiPart # XS10303
Spark Plug Wire Set - Delphi XS10303
4.539 Reviews
$53.99
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3-year warranty
90 days free return
Fits 1974-1974 Cadillac Calais, 1974-1974 Cadillac DeVille, 1974-1974 Cadillac DeVille, 1974-1974 Cadillac DeVille, 1974-1974 Cadillac Eldorado, 1974-1974 Cadillac Fleetwood, 1974-1974 Cadillac Fleetwood, 1977-1977 Cadillac Fleetwood, 1977-1977 Cadillac Fleetwood, 1977-1978 Cadillac DeVille, 1977-1978 Cadillac Eldorado, 1978-1979 Cadillac Fleetwood, 1979-1979 Cadillac DeVille, 1979-1979 Cadillac Fleetwood, 1979-1979 Cadillac Fleetwood, 1980-1981 Cadillac DeVille, 1980-1981 Cadillac Eldorado, 1980-1981 Cadillac Fleetwood, 1980-1981 Cadillac Fleetwood, 1980-1981 Cadillac Seville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
XS10303, QW825, 2X1131, 608K, 7920Q, 2602S, 2634S, 12043734,
...View moreitem #1001W9TT
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DelphiPart # XS10278
Spark Plug Wire Set - Delphi XS10278
4.539 Reviews
$40.99
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3-year warranty
90 days free return
Fits 1980-1980 Buick Century, 1980-1980 Buick Century, 1980-1980 Buick Century, 1980-1980 Buick LeSabre, 1980-1980 Buick LeSabre, 1980-1980 Buick Skyhawk, 1980-1987 Buick Regal, 1981-1981 Buick Century, 1981-1981 Buick Century, 1981-1981 Buick LeSabre, 1981-1981 Buick LeSabre, 1981-1981 Buick Riviera, 1981-1984 Buick Electra, 1982-1982 Buick LeSabre, 1982-1982 Buick LeSabre, 1982-1982 Buick LeSabre, 1982-1982 Buick LeSabre, 1982-1982 Buick Regal, 1982-1982 Buick Regal, 1982-1982 Buick Regal
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
XS10278, 30833, QW833, 2X1073, 606M, 12043723, 671-6024, 1807,
...View moreitem #1001WCE5
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DensoPart # 671-6024
Spark Plug Wire Set - Denso 671-6024
51 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1979-1981 Buick Century, 1979-1983 Buick Riviera, 1980-1980 Buick Skyhawk, 1980-1984 Buick Electra, 1980-1984 Buick LeSabre, 1980-1985 Buick LeSabre, 1980-1985 Buick Regal, 1981-1984 Buick Riviera, 1982-1982 Buick Skylark, 1982-1984 Buick Regal, 1986-1986 Buick Regal, 1986-1987 Buick Regal, 1987-1987 Buick Regal, 1980-1982 Cadillac DeVille, 1980-1982 Cadillac Fleetwood, 1981-1982 Cadillac Eldorado, 1981-1982 Cadillac Seville, 1980-1980 Chevrolet Monza, 1980-1981 Chevrolet Camaro, 1980-1983 Chevrolet Malibu
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6024, 35-6122, MSW1284, 6716024, 606M, 11-617M, 2X1073, QW833,
...View moreitem #100314HH
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DensoPart # 671-8014
Spark Plug Wire Set - Denso 671-8014
51 Reviews
$65.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1989-1989 Cadillac Commercial Chassis, 1989-1989 Cadillac Fleetwood, 1989-1992 Cadillac Allante, 1989-1992 Cadillac Eldorado, 1989-1992 Cadillac Seville, 1989-1993 Cadillac DeVille, 1990-1991 Cadillac Commercial Chassis, 1990-1992 Cadillac Fleetwood, 1992-1993 Cadillac Commercial Chassis, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1994-1995 Cadillac DeVille
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8014, 35-8111, MSW1833, 6718014, 628B, 11-849M, 2X1126, QW887,
...View moreitem #100317HD
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DensoPart # 671-8026
Spark Plug Wire Set - Denso 671-8026
51 Reviews
$51.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1974-1974 Cadillac Calais, 1974-1974 Cadillac DeVille, 1974-1974 Cadillac Eldorado, 1974-1974 Cadillac Fleetwood, 1974-1974 Cadillac Fleetwood, 1974-1974 Cadillac Fleetwood, 1977-1978 Cadillac DeVille, 1977-1978 Cadillac Eldorado, 1977-1978 Cadillac Fleetwood, 1977-1984 Cadillac Commercial Chassis, 1979-1979 Cadillac DeVille, 1979-1979 Cadillac Fleetwood, 1980-1981 Cadillac DeVille, 1980-1981 Cadillac Eldorado, 1980-1981 Cadillac Seville, 1980-1984 Cadillac Fleetwood
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8026, 118024, 35-8125, 6718026, 96276, 700253, 608K, 09659,
...View moreitem #100313VT
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DensoPart # 671-8047
Spark Plug Wire Set - Denso 671-8047
51 Reviews
$50.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1970-1973 Cadillac Eldorado, 1971-1973 Cadillac Calais, 1971-1973 Cadillac DeVille, 1971-1973 Cadillac Eldorado, 1971-1973 Cadillac Fleetwood, 1971-1973 Cadillac Fleetwood, 1971-1973 Cadillac Fleetwood, 1973-1973 Cadillac Fleetwood, 1974-1974 Cadillac Eldorado
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8047, 118047, 35-8320, MSW1908, 6718047, 96074, 700149, 508M,
...View moreitem #1003178S
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What are spark plug wires?
Spark plug wires, also known as ignition cables or spark plug leads, are a set of wires that connect the ignition coil or distributor to the spark plugs in an internal combustion engine. They are responsible for transmitting high-voltage electrical energy from the ignition source to the spark plugs, which ignite the fuel-air mixture in the engine's cylinders.
The spark plug wires typically consist of a central core made of conductive materials such as copper, and an insulating layer made of materials like silicone or rubber to prevent electrical current from leaking. The wires are designed to withstand high temperatures and electrical interference and are often color-coded to ensure correct installation.
Signs of bad spark plug wires
Spark plug wires play a crucial role in ensuring reliable engine performance. Worn or damaged spark plug wires can cause misfires, rough idling, and poor fuel efficiency, so it's important to take regular maintenance and replace them as needed.
Engine knocking
When the spark plug wires fail, the engine may produce a knocking sound, particularly under heavy loads. This can be caused by pre-ignition or detonation, which can occur when the spark plug wires are not delivering enough energy to the spark plugs.
Rough shifting (automatic transmission)
In some cases, a damaged spark plug wire can cause rough shifting in an automatic transmission. This can be due to a drop in engine power caused by misfires or other problems related to the spark plug wires.
Burned spark plug wires
If you notice that your spark plug wires are discolored or burned, this can be a sign that they are not functioning properly. Burned spark plug wires can be caused by excessive heat, electrical interference, or other issues.
Poor acceleration
When the spark plug wires are failing, the engine may have trouble accelerating smoothly. This can be due to misfires or other problems related to the spark plug wires.
Stalling
A damaged spark plug wire can cause the engine to stall or cut out, particularly at idle. This can be due to a drop in engine power caused by misfires or other problems related to the spark plug wires.
How to change spark plug wires?
Replacing a spark plug wire set is a relatively simple task, and can usually be completed in under an hour. You can follow these steps:
1. Remove the worn or faulty spark wire set.
To avoid confusion and prevent accidentally switching the wires, it is recommended to replace each spark plug wire individually, starting with the longest one. When removing the wires from either the spark plug or distributor cap, it is important to loosen the connection by twisting or rotating the boot. Yanking or forcefully pulling on the wires may cause them to break. Only pull on the boot and refrain from pulling on the cable.
2. Install the new spark plug wire set
Install the new spark plug wires in the same location as the old wires, making sure to connect each wire to the correct spark plug. If your new spark plug wires have boots, be sure to push the boot firmly onto the spark plug until it clicks into place.
3. Test the new spark plug wires
Once you have installed the new spark plug wires, start the engine and check for any signs of misfires, rough idling, or other problems that could indicate an issue with the spark plug wires. If everything looks good, you're all set!