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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Oldsmobile Cutlass Supreme Spark Plug Wire
3 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 # APSPW239
6 Pcs Spark Plug Wire Sets for Buick Century Chevrolet Malibu Oldsmobile Pontiac
51 Reviews
CA$40.99
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3-year warranty
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Fits 1999 - 1999 Oldsmobile Alero, 1999 - 1999 Pontiac Grand Am, 1999 - 1999 Pontiac Montana, 1997 - 1999 Buick Century, 1997 - 1999 Chevrolet Malibu, 1997 - 1999 Chevrolet Venture, 1996 - 1999 Oldsmobile Silhouette, 1996 - 1999 Pontiac Trans Sport, 1996 - 1996 Chevrolet Lumina APV, 1995 - 1999 Chevrolet Lumina, 1995 - 1999 Chevrolet Monte Carlo, 1995 - 1999 Oldsmobile Cutlass, 1995 - 1999 Pontiac Grand Prix, 1995 - 1997 Oldsmobile Cutlass Supreme, 1995 - 1996 Buick Regal, 1994 - 1998 Buick Skylark, 1994 - 1998 Oldsmobile Achieva, 1994 - 1998 Pontiac Grand Am, 1994 - 1996 Chevrolet Beretta, 1994 - 1996 Chevrolet Corsica
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Vehicle: Oldsmobile Cutlass Supreme
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ColorBlack
ConditionNew
item #10049ARC
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A-Premium®Part # APSPW412
6 Pcs Spark Plug Wire Sets for Buick Century Oldsmobile Cutlass Supreme V6 3.1L
51 Reviews
CA$51.99
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3-year warranty
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Fits 1995 - 1996 Oldsmobile Cutlass Ciera, 1994 - 1996 Buick Century, 1994 - 1994 Oldsmobile Cutlass Ciera, 1994 - 1994 Oldsmobile Cutlass Cruiser, 1994 - 1994 Oldsmobile Cutlass Supreme, 1993 - 1993 Oldsmobile Cutlass Supreme
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Vehicle: Oldsmobile Cutlass Supreme
Item LocatedCanada
Quantity6
Part interchange
6716042, 7646, 12096426, 12173538
ConditionNew
item #1002K9T7
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A-Premium®Part # APSPW216
8 Pcs Spark Plug Wire Set for Chevrolet Malibu 1978-1979 GMC Buick Olds Pontiac
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Fits 1986 - 1986 Chevrolet K5 Blazer, 1979 - 1979 Buick Century, 1979 - 1979 Chevrolet El Camino, 1979 - 1979 Chevrolet El Camino, 1979 - 1979 Chevrolet Malibu, 1979 - 1979 Chevrolet Malibu, 1979 - 1979 Chevrolet Monte Carlo, 1979 - 1979 GMC Caballero, 1979 - 1979 GMC Caballero, 1979 - 1979 Pontiac Grand LeMans, 1979 - 1979 Pontiac LeMans, 1978 - 1979 Buick Century, 1978 - 1979 Buick Regal, 1978 - 1979 Chevrolet El Camino, 1978 - 1979 Chevrolet Malibu, 1978 - 1979 Chevrolet Monte Carlo, 1978 - 1979 Oldsmobile Cutlass, 1978 - 1979 Oldsmobile Cutlass Calais, 1978 - 1979 Oldsmobile Cutlass Salon, 1978 - 1979 Oldsmobile Cutlass Supreme
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Vehicle: Oldsmobile Cutlass Supreme
Item LocatedCanada
Quantity8
Part interchange
6875, 12043736, 671-8027
ConditionNew
item #1004LD8K
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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!