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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Austin Spark Plug Wire
5 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 # APSPW452
5 Pcs Spark Plug Wire Set for Chevrolet Luv Pickup Datsun 210 Plymouth Volvo Austin
4.552 Reviews
$34.99
Low stock: Only 2 left
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3-year warranty
90 days free return
Fits 1960 - 1966 Austin Mini, 1962 - 1966 Austin Mini Cooper, 1964 - 1964 Austin Mini Cooper, 1964 - 1969 Austin Mini Cooper, 1962 - 1966 Austin Healey Sprite, 1972 - 1974 Chevrolet Luv Pickup, 1979 - 1982 Datsun 210, 1979 - 1982 Datsun 210, 1980 - 1982 Datsun 210, 1967 - 1967 Datsun 411, 1971 - 1973 Datsun 1200, 1966 - 1970 Datsun 1600, 1968 - 1970 Datsun 2000, 1974 - 1974 Datsun B210, 1975 - 1978 Datsun B210, 1971 - 1973 Plymouth Cricket, 1975 - 1975 Volvo 242, 1975 - 1975 Volvo 244, 1975 - 1975 Volvo 245, 1966 - 1967 Volvo 1800
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Vehicle: Austin
Item LocatedUnited States
Quantity5
Part interchange
6714001
ConditionNew
item #1013DUAK
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A-Premium®Part # APSPW476
7 Pcs Spark Plug Wire Set for Jeep Wagoneer Gladiator Ford Econoline AMC Triumph
4.552 Reviews
$52.99
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3-year warranty
90 days free return
Fits 1967 - 1967 AMC Marlin, 1959 - 1967 Austin Healey 3000, 1965 - 1966 Ford Econoline, 1965 - 1965 Ford Falcon, 1974 - 1974 International Harvester 100, 1974 - 1974 International Harvester 200, 1971 - 1973 International Harvester 1010, 1971 - 1973 International Harvester 1110, 1971 - 1971 International Harvester 1210, 1971 - 1973 International Harvester 1310, 1968 - 1968 International Harvester 1000C, 1969 - 1970 International Harvester 1000D, 1968 - 1968 International Harvester 1100C, 1969 - 1970 International Harvester 1100D, 1968 - 1968 International Harvester 1200C, 1969 - 1970 International Harvester 1200D, 1968 - 1968 International Harvester 1300C, 1969 - 1970 International Harvester 1300D, 1963 - 1964 International Harvester M Series Van, 1968 - 1970 International Harvester M1100
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Vehicle: Austin
Item LocatedUnited States
Quantity7
Part interchange
671-6002, 6716002
ConditionNew
item #1013DUWC
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A-Premium®Part # APSPW022
5 Pcs Spark Plug Wire Set for Austin America 1968-1972 Marina 1973-1975 MG MGB
4.552 Reviews
$34.99
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3-year warranty
90 days free return
Fits 1968 - 1972 Austin America, 1973 - 1975 Austin Marina, 1969 - 1981 MG MGB
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Vehicle: Austin
Item LocatedUnited States
Quantity5
Part interchange
671-4018
item #1004LGEG
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DensoPart # 671-4018
Denso 671-4018 Spark Plug Wire
51 Reviews
$21.99
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3-year warranty
90 days free return
Fits 1968-1972 Austin America, 1973-1975 Austin Marina, 1969-1972 MG MGB, 1973-1976 MG MGB, 1977-1981 MG MGB
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Vehicle: Austin
Item LocatedUnited States
QuantityOne Set
Part interchange
671-4018, 104018, 146, 35-4295, 6714018, EUX033, EUX025, 96922,
...View moreitem #1002HUTX
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Walker ProductsPart # 924-1008
Walker Products 924-1008 Spark Plug Wire Set
4.52 Reviews
$32.99
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3-year warranty
90 days free return
Fits 1968-1972 Austin America, 1973-1975 Austin Marina, 1960-1960 MG Magnette, 1960-1962 MG MGA, 1961-1961 MG Magnette, 1962-1962 MG Magnette, 1962-1962 MG Midget, 1963-1965 MG Magnette, 1963-1967 MG 1100, 1963-1972 MG MGB, 1963-1979 MG Midget, 1968-1969 MG 1300, 1973-1976 MG MGB, 1977-1980 MG MGB
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Austin
Item LocatedUnited States
QuantityOne Set
Part interchange
924-1008, 35-4295, 54406, EUX033, 4011, 9284, 29436, 35-77106,
...View moreitem #1001PT65
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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!