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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DelphiPart # XS10233
Spark Plug Wire Set - Delphi XS10233
4.645 Reviews
$106.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1996-1997 Cadillac DeVille, 1995-1997 Cadillac Eldorado, 1995-1997 Cadillac Seville, 1995-1995 Cadillac DeVille
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
XS10233, 2X1130, QW1062, 748J, 9748J, 700903, 118051, 86642,
...View moreitem #1001WCPV
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DelphiPart # XS10303
Spark Plug Wire Set - Delphi XS10303
4.645 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1980-1981 Cadillac DeVille, 1980-1981 Cadillac Eldorado, 1980-1981 Cadillac Fleetwood, 1980-1981 Cadillac Fleetwood, 1980-1981 Cadillac Seville, 1979-1979 Cadillac DeVille, 1979-1979 Cadillac Fleetwood, 1979-1979 Cadillac Fleetwood, 1978-1979 Cadillac Fleetwood, 1977-1978 Cadillac DeVille, 1977-1978 Cadillac Eldorado, 1977-1977 Cadillac Fleetwood, 1977-1977 Cadillac Fleetwood, 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
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
4.645 Reviews
$40.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1987-1987 Buick Regal, 1985-1987 Oldsmobile Cutlass Salon, 1984-1984 Chevrolet Monte Carlo, 1984-1984 Pontiac Parisienne, 1983-1985 Buick LeSabre, 1983-1984 Buick LeSabre, 1983-1984 Buick Regal, 1983-1983 Chevrolet Monte Carlo, 1982-1987 Oldsmobile Cutlass Supreme, 1982-1986 Buick Regal, 1982-1985 Oldsmobile Delta 88, 1982-1984 Chevrolet Caprice, 1982-1984 Chevrolet El Camino, 1982-1984 Chevrolet Impala, 1982-1984 Oldsmobile Cutlass Calais, 1982-1983 Buick Regal, 1982-1983 Chevrolet Malibu, 1982-1983 Oldsmobile 98, 1982-1983 Pontiac Grand LeMans, 1982-1982 Buick LeSabre
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
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1987-1987 Buick Regal, 1986-1987 Buick Regal, 1986-1986 Buick Regal, 1985-1987 Oldsmobile Cutlass Salon, 1982-1984 Buick Regal, 1982-1983 Pontiac Grand LeMans, 1982-1982 Buick Skylark, 1982-1982 Chevrolet Celebrity, 1982-1982 Chevrolet Citation, 1982-1982 Oldsmobile Cutlass Ciera, 1982-1982 Oldsmobile Omega, 1982-1982 Pontiac 6000, 1982-1982 Pontiac Bonneville, 1982-1982 Pontiac Grand LeMans, 1982-1982 Pontiac Grand Prix, 1982-1982 Pontiac Phoenix, 1981-1985 Pontiac Parisienne, 1981-1984 Buick Riviera, 1981-1984 Oldsmobile Toronado, 1981-1983 Oldsmobile 98
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
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994-1995 Cadillac DeVille, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1992-1993 Cadillac Commercial Chassis, 1990-1992 Cadillac Fleetwood, 1990-1991 Cadillac Commercial Chassis, 1989-1993 Cadillac DeVille, 1989-1992 Cadillac Allante, 1989-1992 Cadillac Eldorado, 1989-1992 Cadillac Seville, 1989-1989 Cadillac Commercial Chassis, 1989-1989 Cadillac Fleetwood
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
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1980-1984 Cadillac Fleetwood, 1980-1981 Cadillac DeVille, 1980-1981 Cadillac Eldorado, 1980-1981 Cadillac Seville, 1979-1979 Cadillac DeVille, 1979-1979 Cadillac Fleetwood, 1977-1984 Cadillac Commercial Chassis, 1977-1978 Cadillac DeVille, 1977-1978 Cadillac Eldorado, 1977-1978 Cadillac Fleetwood, 1974-1974 Cadillac Calais, 1974-1974 Cadillac DeVille, 1974-1974 Cadillac Eldorado, 1974-1974 Cadillac Fleetwood, 1974-1974 Cadillac Fleetwood, 1974-1974 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
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1974-1974 Cadillac Eldorado, 1973-1973 Cadillac Fleetwood, 1971-1973 Cadillac Calais, 1971-1973 Cadillac DeVille, 1971-1973 Cadillac Eldorado, 1971-1973 Cadillac Fleetwood, 1971-1973 Cadillac Fleetwood, 1971-1973 Cadillac Fleetwood, 1970-1973 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
Show less
DensoPart # 671-8058
Spark Plug Wire Set - Denso 671-8058
51 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1975-1976 Cadillac Calais, 1975-1976 Cadillac Commercial Chassis, 1975-1976 Cadillac DeVille, 1975-1976 Cadillac Eldorado, 1975-1976 Cadillac Fleetwood
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Cadillac DeVille
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8058, 118059, 35-8154, 6718058, 96276, 700248, 608M, CH852,
...View moreitem #1003144N
Show less
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!