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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Ford Spark Plug Wire
262 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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DensoPart # 671-6116
Spark Plug Wire Set - Denso 671-6116
51 Reviews
$58.99
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3-year warranty
90 days free return
Fits 2003-2003 Ford Taurus, 2003-2003 Ford Taurus, 2003-2003 Ford Taurus, 2003-2003 Ford Taurus, 2003-2003 Mercury Sable, 2002-2003 Ford Taurus, 2001-2003 Ford Taurus, 2001-2003 Ford Taurus, 2001-2003 Mercury Sable, 2001-2002 Ford Taurus, 2001-2002 Mercury Sable, 2001-2001 Mercury Sable
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6116, 35-6301, MSW2931, 6716116, 16-846C, 11-6103M, 2X1303, QW1423,
...View moreitem #10031605
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DensoPart # 671-6081
Spark Plug Wire Set - Denso 671-6081
51 Reviews
$49.99
Low stock: Only 4 left
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3-year warranty
90 days free return
Fits 1994-1994 Mazda B3000, 1991-1995 Ford Aerostar, 1991-1994 Ford Ranger
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6081, 35-6167, 605, MSW1851, 6716081, FDZ030, 16-816M, 906S,
...View moreitem #1003189S
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DensoPart # 671-8081
Spark Plug Wire Set - Denso 671-8081
51 Reviews
$61.99
Low stock: Only 4 left
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3-year warranty
90 days free return
Fits 1979-1979 Ford F-100, 1978-1978 Ford E-100 Econoline, 1977-1982 Ford E-250 Econoline Club Wagon, 1977-1982 Ford E-350 Econoline, 1977-1982 Ford E-350 Econoline Club Wagon, 1977-1980 Ford E-250 Econoline, 1977-1979 Ford F-150, 1977-1979 Ford F-250, 1977-1979 Ford F-350, 1977-1978 Ford LTD, 1977-1978 Lincoln Continental, 1977-1978 Lincoln Mark V, 1977-1978 Mercury Grand Marquis, 1977-1978 Mercury Marquis
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8081, 128008, 35-8169, 6718081, 96264, 700233, 16-818E, 618J,
...View moreitem #100316GL
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DensoPart # 671-8077
Spark Plug Wire Set - Denso 671-8077
51 Reviews
$60.99
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3-year warranty
90 days free return
Fits 1990-1991 Mercury Grand Marquis, 1990-1990 Lincoln Town Car, 1989-1989 Mercury Grand Marquis, 1988-1991 Ford Country Squire, 1988-1991 Mercury Colony Park, 1988-1990 Ford LTD Crown Victoria, 1988-1988 Mercury Grand Marquis, 1987-1992 Lincoln Mark VII, 1986-1987 Lincoln Continental, 1986-1986 Lincoln Mark VII, 1986-1986 Mercury Grand Marquis, 1985-1987 Ford Bronco, 1985-1987 Ford E-150 Econoline, 1985-1987 Ford E-150 Econoline Club Wagon, 1985-1987 Ford E-250 Econoline, 1985-1987 Ford F-150, 1985-1987 Ford F-250, 1984-1989 Lincoln Town Car, 1984-1988 Ford Thunderbird, 1984-1988 Mercury Cougar
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8077, 35-8165, MSW1827, 6718077, 16-818A, 11-850M, 2X1329, QW897,
...View moreitem #100318QC
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DensoPart # 671-6099
Spark Plug Wire Set - Denso 671-6099
51 Reviews
$62.99
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3-year warranty
90 days free return
Fits 1998-2000 Ford Ranger, 1998-2000 Mazda B3000
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6099, MSW1866, 35-6184, 691, 6716099, FDZ068, 16-826F, 936T,
...View moreitem #100314X9
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DensoPart # 671-6108
Spark Plug Wire Set - Denso 671-6108
51 Reviews
$51.99
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3-year warranty
90 days free return
Fits 2004-2004 Ford Mustang, 2001-2004 Ford Mustang
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6108, 35-6193, MSW1875, 6716108, 16-836T, 11-6100M, 2X1310, QW1422,
...View moreitem #100313UE
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DensoPart # 671-6092
Spark Plug Wire Set - Denso 671-6092
51 Reviews
$75.99
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3-year warranty
90 days free return
Fits 2000-2000 Mazda MPV, 1999-2000 Mercury Cougar, 1995-2000 Ford Contour, 1995-2000 Mercury Mystique
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6092, MSW2932, 35-6004, 720, 6716092, FDZ061, FDZ070, 16-826A,
...View moreitem #100313HD
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DensoPart # 671-6265
Spark Plug Wire Set - Denso 671-6265
51 Reviews
$63.99
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3-year warranty
90 days free return
Fits 2007-2010 Ford Explorer Sport Trac, 2005-2009 Ford Explorer, 2005-2009 Mercury Mountaineer
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6265, 126055, 35-6342, 6716265, 97050, 6694
item #1003176Y
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DensoPart # 671-6073
Spark Plug Wire Set - Denso 671-6073
51 Reviews
$49.99
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3-year warranty
90 days free return
Fits 1987-1990 Ford Bronco II, 1986-1992 Ford Ranger, 1986-1986 Ford Bronco II, 1985-1985 Ford Bronco II, 1984-1984 Ford Bronco II, 1983-1985 Ford Ranger
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6073, MSW1811, 35-6160, 734, 6716073, 16-816C, 11-629M, 2X1346,
...View moreitem #100317YV
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DensoPart # 671-8094
Spark Plug Wire Set - Denso 671-8094
51 Reviews
$58.99
Low stock: Only 3 left
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3-year warranty
90 days free return
Fits 1979-1979 Lincoln Continental, 1979-1979 Lincoln Mark V, 1978-1979 Ford Bronco, 1978-1978 Mercury Grand Marquis, 1978-1978 Mercury Marquis, 1977-1979 Ford E-100 Econoline, 1977-1979 Ford E-100 Econoline Club Wagon, 1977-1979 Ford E-150 Econoline, 1977-1979 Ford E-150 Econoline Club Wagon, 1977-1979 Ford E-250 Econoline, 1977-1979 Ford E-250 Econoline Club Wagon, 1977-1979 Ford E-350 Econoline, 1977-1979 Ford E-350 Econoline Club Wagon, 1977-1979 Ford F-100, 1977-1979 Ford F-100, 1977-1979 Ford F-150, 1977-1979 Ford F-150, 1977-1979 Ford F-250, 1977-1979 Ford F-250, 1977-1979 Ford F-350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8094, 35-8184, MSW1291, 6718094, 16-808T, 11-832M, 2X1334, QW831,
...View moreitem #100316AH
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DensoPart # 671-4061
Spark Plug Wire Set - Denso 671-4061
51 Reviews
$60.99
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3-year warranty
90 days free return
Fits 2003-2004 Ford Focus, 2003-2003 Ford Escort, 2001-2004 Ford Escape, 2001-2004 Mazda Tribute, 2000-2002 Ford Focus, 2000-2000 Ford Contour, 2000-2000 Mercury Mystique, 1999-1999 Ford Contour, 1999-1999 Mercury Mystique
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-4061, 35-4021, 754, MSW1879, 6714061, FDZ070, 16-844E, 11-4143M,
...View moreitem #1002HSHQ
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DensoPart # 671-6002
Spark Plug Wire Set - Denso 671-6002
51 Reviews
$52.99
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3-year warranty
90 days free return
Fits 1975-1976 Triumph TR6, 1974-1974 International 100, 1974-1974 International 100, 1974-1974 International 200, 1974-1974 International 200, 1974-1974 Triumph TR6, 1973-1973 International 1110, 1973-1973 Jeep DJ5, 1973-1973 Jeep DJ5, 1973-1973 Jeep Wagoneer, 1972-1973 International 1010, 1972-1973 International 1010, 1972-1973 International 1110, 1972-1973 International 1310, 1972-1973 Jeep CJ5, 1972-1973 Jeep CJ5, 1972-1973 Jeep CJ6, 1972-1973 Jeep CJ6, 1972-1973 Jeep J-2500, 1972-1973 Jeep J-2600
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Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6002, 106002, 35-6002, 6716002, 96123, 96413, 700126, 536C,
...View moreitem #100314CU
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DensoPart # 671-8074
Spark Plug Wire Set - Denso 671-8074
51 Reviews
$61.99
Low stock: Only 5 left
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3-year warranty
90 days free return
Fits 1986-1986 Mercury Grand Marquis, 1984-1985 Ford LTD, 1984-1985 Mercury Grand Marquis, 1983-1983 Ford LTD, 1983-1983 Ford LTD, 1983-1983 Ford Thunderbird, 1983-1983 Lincoln Continental, 1983-1983 Mercury Cougar, 1982-1983 Ford Mustang, 1982-1983 Lincoln Town Car, 1982-1983 Mercury Capri, 1982-1982 Lincoln Continental, 1981-1983 DeTomaso Pantera, 1981-1982 Ford F-100, 1980-1984 Ford Bronco, 1980-1984 Ford F-250, 1980-1983 Lincoln Mark VI, 1980-1983 Mercury Grand Marquis, 1980-1982 Ford Fairmont, 1980-1982 Ford LTD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8074, 35-8162, MSW1290, 6718074, 16-808V, 11-834M, 2X1319, QW837,
...View moreitem #1003167T
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DensoPart # 671-8076
Spark Plug Wire Set - Denso 671-8076
51 Reviews
$63.99
Low stock: Only 2 left
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3-year warranty
90 days free return
Fits 1983-1988 Ford E-250 Econoline Club Wagon, 1983-1988 Ford E-350 Econoline, 1983-1988 Ford E-350 Econoline Club Wagon, 1983-1988 Ford F-250, 1983-1988 Ford F-350, 1977-1977 Ford Ranchero
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8076, 128003, 35-8164, 6718076, 96261, 700233, 16-808X, CH857,
...View moreitem #10031817
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DensoPart # 671-6114
Spark Plug Wire Set - Denso 671-6114
51 Reviews
$68.99
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3-year warranty
90 days free return
Fits 2010-2010 Mazda B4000, 2002-2005 Ford Explorer Sport Trac, 2002-2003 Ford Explorer, 2001-2011 Ford Ranger, 2001-2008 Mazda B4000, 2001-2001 Ford Explorer, 2001-2001 Ford Explorer Sport Trac
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6114, 126045, 35-6199, 6716114, FDZ080, FDZ081, 97050, 97051,
...View moreitem #100316CH
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DensoPart # 671-6109
Spark Plug Wire Set - Denso 671-6109
51 Reviews
$59.99
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3-year warranty
90 days free return
Fits 2004-2004 Ford F-150 Heritage, 2003-2003 Ford E-150, 2003-2003 Ford E-150 Club Wagon, 2003-2003 Ford E-250, 2001-2003 Ford F-150, 2001-2002 Ford E-150 Econoline, 2001-2002 Ford E-150 Econoline Club Wagon, 2001-2002 Ford E-250 Econoline
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6109, 35-6194, MSW1874, 6716109, 16-836U, 11-6099M, 2X1367, 126040,
...View moreitem #100313TC
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DensoPart # 671-8093
Spark Plug Wire Set - Denso 671-8093
51 Reviews
$71.99
Low stock: Only 1 left
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3-year warranty
90 days free return
Fits 1997-1997 Ford Explorer, 1997-1997 Mercury Mountaineer, 1996-1996 Ford Explorer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-8093, MSW1869, 35-8183, 6718093, 16-818T, 11-890M, 2X1370, QW1203,
...View moreitem #100313ZL
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DensoPart # 671-6282
Spark Plug Wire Set - Denso 671-6282
51 Reviews
$58.99
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3-year warranty
90 days free return
Fits 2007-2008 Ford F-150, 2007-2008 Ford F-150, 2007-2008 Ford F-150
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6282, 126059, 6716282, 700591, 2X1878, 6697, QW1556
item #100314DH
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DensoPart # 671-6238
Spark Plug Wire Set - Denso 671-6238
51 Reviews
$51.99
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3-year warranty
90 days free return
Fits 2006-2006 Ford F-150, 2006-2006 Ford F-150, 2006-2006 Ford F-150, 2005-2005 Ford F-150
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6238, 126051, 35-6338, 6716238, 700591
item #100315PK
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DensoPart # 671-6283
Spark Plug Wire Set - Denso 671-6283
51 Reviews
$68.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2009-2010 Ford Mustang, 2007-2008 Ford Mustang
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Ford
Item LocatedUnited States
QuantityOne Set
Part interchange
671-6283, 126060, 6716283, 97113, 700589, 6686
item #100317VG
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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!