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Mercury Ignition Coil

187 items

Shop precise fit replacement Ignition Coil to maintain and improve your vehicle's performance. Find the right parts for your make and model, backed by excellent customer service at A-Premium.

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Ignition Coil - Delphi GN10024Ignition Coil - Delphi GN10024
DelphiPart # GN10024
Ignition Coil - Delphi GN10024
51 Reviews
$45.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1990-1992 INFINITI M30, 1991-1993 INFINITI G20, 1994-1994 INFINITI G20, 1993-1998 Mercury Villager, 1988-1989 Nissan 300ZX, 1989-1989 Nissan Pulsar NX, 1989-1990 Nissan 240SX, 1989-1990 Nissan Sentra, 1989-1994 Nissan Maxima, 1990-1990 Nissan Axxess, 1990-1990 Nissan Pulsar NX, 1990-1992 Nissan Stanza, 1990-1994 Nissan D21, 1990-1995 Nissan Pathfinder, 1991-1993 Nissan NX, 1991-1994 Nissan Sentra, 1993-1998 Nissan Quest, 1995-1995 Nissan Pickup, 1996-1996 Nissan Pickup, 1989-1991 Subaru Justy
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10024, 5C1130, 5C1413, C1418, C933, E514C, E515C, E571, 
...View more
item #1001VX11
Note
Coil with out Module. 1 HV Tower
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Ignition Coil - Delphi GN10238
DelphiPart # GN10238
Ignition Coil - Delphi GN10238
51 Reviews
$74.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2006-2012 Ford Fusion, 2007-2007 Ford Escape, 2009-2012 Ford Escape, 2006-2006 Lincoln Zephyr, 2010-2011 Mazda Tribute, 2006-2011 Mercury Milan, 2007-2007 Mercury Mariner, 2009-2011 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10238, 5C1651, C1594, CLS1185, 921-2088, 673-6011, 6E5Z 12029-BA, 5116, 
...View more
item #1001VX8R
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Delphi GN10251 Ignition Coil
DelphiPart # GN10251
Delphi GN10251 Ignition Coil
51 Reviews
$62.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2006-2009 Ford Fusion, 2006-2009 Mercury Milan
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10251, 5C1650, C1593, E1016, CLS1206, 921-2096, 673-6012, 6E5Z 12029-AA, 
...View more
item #1001VTD4
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Ignition Coil - Delphi GN10226
DelphiPart # GN10226
Ignition Coil - Delphi GN10226
51 Reviews
$50.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2001-2006 Ford Escape, 2004-2004 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2005-2007 Ford Five Hundred, 2005-2007 Ford Freestyle, 2008-2008 Ford Escape, 2002-2006 Mazda MPV, 2003-2008 Mazda 6, 2000-2000 Mercury Sable, 2000-2000 Mercury Sable, 2004-2004 Mercury Sable
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10226, 5C1453, 26340, C1387, C1563, 921-2080, 8Q1, 673-6005, 
...View more
item #1001VUZ2
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Ignition Coil - Delphi GN10193
DelphiPart # GN10193
Ignition Coil - Delphi GN10193
51 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-1999 Ford Mustang, 2001-2001 Ford Mustang, 2003-2003 Ford Mustang, 2004-2004 Ford Mustang, 2004-2004 Ford Mustang, 2005-2006 Ford GT, 2007-2007 Ford Mustang, 2007-2012 Ford Mustang, 2013-2014 Ford Mustang, 1997-1998 Lincoln Mark VIII, 1998-2002 Lincoln Continental, 1999-2004 Lincoln Navigator, 2002-2002 Lincoln Blackwood, 2003-2005 Lincoln Aviator, 2003-2004 Mercury Marauder
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10193, 5C1128, 26341, C1141, CLS1008, 6Q4, 60-1001, 673-6008, 
...View more
item #1001VV5R
Note
Coil comes with Boot
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Ignition Coil - Delphi GN10292
DelphiPart # GN10292
Ignition Coil - Delphi GN10292
51 Reviews
$39.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1990-1993 Ford Festiva, 1991-1996 Ford Escort, 1990-1991 Mazda 323, 1990-1993 Mazda B2200, 1990-1993 Mazda B2600, 1990-1994 Mazda Protege, 1992-1992 Mazda 323, 1992-1992 Mazda 323, 1992-1993 Mazda MX-3, 1993-1993 Mazda 323, 1994-1994 Mazda 323, 1991-1996 Mercury Tracer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10292, 5C1120, 23-0345, C946, F507, F511, F521, CLS1119, 
...View more
item #1001VUX7
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Ignition Coil - Delphi GN10273
DelphiPart # GN10273
Ignition Coil - Delphi GN10273
51 Reviews
$34.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1985-1985 Ford LTD, 1985-1985 Ford LTD, 1985-1985 Ford Mustang, 1985-1985 Ford Mustang, 1985-1985 Ford Mustang, 1985-1985 Ford Tempo, 1985-1985 Ford Tempo, 1985-1985 Ford Tempo, 1985-1985 Ford Tempo, 1985-1985 Ford Thunderbird, 1985-1985 Ford Thunderbird, 1985-1985 Ford Thunderbird, 1985-1985 Ford Thunderbird, 1985-1985 Ford Thunderbird, 1985-1985 Ford Thunderbird, 1985-1985 Ford Topaz, 1985-1986 Ford Bronco, 1985-1986 Ford E-150 Econoline, 1985-1986 Ford E-150 Econoline Club Wagon, 1985-1986 Ford E-250 Econoline
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10273, 5C1023, C832, E71, E71P, 729 51007, 729 51007 614, 920-1010, 
...View more
item #1001VU7T
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Ignition Coil - Delphi GN10391
DelphiPart # GN10391
Ignition Coil - Delphi GN10391
51 Reviews
$33.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1991-1996 Ford Escort, 1990-1991 Mazda 323, 1990-1994 Mazda Protege, 1992-1992 Mazda 323, 1992-1992 Mazda 323, 1992-1993 Mazda MX-3, 1993-1993 Mazda 323, 1994-1994 Mazda 323, 1991-1996 Mercury Tracer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
Part interchange
GN10391, 5C1120, 23-0345, C946, F507, F511, F521, CLS1119, 
...View more
item #1001VZD2
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Denso 673-6005 Ignition Coil
DensoPart # 673-6005
Denso 673-6005 Ignition Coil
4.523 Reviews
$51.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2001-2006 Ford Escape, 2004-2004 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2004-2005 Ford Taurus, 2005-2007 Ford Five Hundred, 2005-2007 Ford Freestyle, 2008-2008 Ford Escape, 2001-2006 Mazda Tribute, 2002-2006 Mazda MPV, 2003-2008 Mazda 6, 2008-2009 Mazda Tribute, 2000-2000 Mercury Sable
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6005, C-659, C-513, IC386, IC526, U5060, GN10226, GN10192, 
...View more
item #1002HACR
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Denso 673-6000 Ignition Coil
DensoPart # 673-6000
Denso 673-6000 Ignition Coil
4.523 Reviews
$49.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1997-1998 Ford E-350 Econoline, 1997-1998 Ford E-350 Econoline, 1997-1999 Ford Econoline Super Duty, 1997-1999 Ford Econoline Super Duty, 1997-1999 Ford Expedition, 1997-1999 Ford F-250, 1997-2002 Ford E-150 Econoline, 1997-2002 Ford E-150 Econoline Club Wagon, 1997-2002 Ford E-250 Econoline, 1997-2002 Ford E-350 Econoline Club Wagon, 1997-2002 Ford E-350 Econoline Club Wagon, 1997-2003 Ford F-150, 1998-2011 Ford Crown Victoria, 1999-1999 Ford Mustang, 1999-1999 Ford Mustang, 1999-1999 Ford Mustang, 1999-2000 Ford E-350 Econoline, 1999-2004 Ford F-250 Super Duty, 1999-2004 Ford F-250 Super Duty, 1999-2004 Ford F-350 Super Duty
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6000, C-500, IC369, U5182, 3W7Z 12029-AA, 1L2Z 12029-AA, F7TZ 12029-CA, 0 221 504 704, 
...View more
item #1002H6UP
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Denso 673-6003 Ignition Coil
DensoPart # 673-6003
Denso 673-6003 Ignition Coil
4.523 Reviews
$48.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004-2007 Ford F-150, 2005-2006 Ford Mustang, 2005-2007 Ford Expedition, 2005-2007 Ford F-250 Super Duty, 2005-2007 Ford F-250 Super Duty, 2005-2007 Ford F-350 Super Duty, 2005-2007 Ford F-350 Super Duty, 2005-2007 Ford F-450 Super Duty, 2005-2007 Ford F-550 Super Duty, 2006-2007 Ford Explorer, 2006-2007 Ford F-53 Motorhome Chassis, 2007-2007 Ford Explorer Sport Trac, 2007-2007 Ford Mustang, 2008-2008 Ford Expedition, 2008-2008 Ford Explorer, 2008-2008 Ford Explorer Sport Trac, 2008-2008 Ford F-150, 2008-2008 Ford F-250 Super Duty, 2008-2008 Ford F-250 Super Duty, 2008-2008 Ford F-350 Super Duty
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6003, C-652, IC558, U5150, 3L3Z 12029-BA, GN10182, FD508, 921-2007, 
...View more
item #1002HA6C
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Denso 673-6001 Ignition Coil
DensoPart # 673-6001
Denso 673-6001 Ignition Coil
4.523 Reviews
$118.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2000-2000 Ford Taurus, 2001-2002 Ford E-150 Econoline, 2001-2002 Ford E-150 Econoline Club Wagon, 2001-2002 Ford E-250 Econoline, 2001-2003 Ford Taurus, 2001-2003 Ford Windstar, 2001-2004 Ford Mustang, 2001-2008 Ford F-150, 2001-2008 Ford Ranger, 2003-2003 Ford E-150, 2003-2003 Ford E-150 Club Wagon, 2003-2003 Ford E-250, 2004-2004 Ford F-150 Heritage
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6001, C-565, IC364, U2023, GN10179, 5C1124, 920-1016, C1312, 
...View more
item #1002HAU0
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Denso 673-6008 Ignition Coil
DensoPart # 673-6008
Denso 673-6008 Ignition Coil
4.523 Reviews
$72.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-1999 Ford Mustang, 2001-2001 Ford Mustang, 2003-2003 Ford Mustang, 2003-2004 Ford Mustang, 2003-2004 Ford Mustang, 2005-2006 Ford GT, 2007-2007 Ford Mustang, 2007-2012 Ford Mustang, 2013-2014 Ford Mustang, 1997-1998 Lincoln Mark VIII, 1998-2002 Lincoln Continental, 1999-2004 Lincoln Navigator, 2002-2002 Lincoln Blackwood, 2003-2005 Lincoln Aviator, 2003-2004 Mercury Marauder
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorGrey
Part interchange
673-6008, C-584, IC63, U5184, 2C6Z 12029-AA, 1F3Z 12029-AA, 4L7Z 12029-AB, F7LZ 12029-AD, 
...View more
item #1002H8N4
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Direct Ignition Coil - Denso 673-6012
DensoPart # 673-6012
Direct Ignition Coil - Denso 673-6012
4.523 Reviews
$73.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2006-2009 Ford Fusion, 2006-2009 Mercury Milan
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6012, C-704, IC596, U5192, 6E5Z 12029-AA, UF516, GN10251, 921-2096, 
...View more
item #1002HAQP
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Direct Ignition Coil - Denso 673-6006
DensoPart # 673-6006
Direct Ignition Coil - Denso 673-6006
4.523 Reviews
$101.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-1999 Ford Contour, 2000-2000 Ford Contour, 2000-2002 Ford Focus, 2001-2004 Ford Escape, 2003-2004 Ford Focus, 2001-2004 Mazda Tribute, 1999-1999 Mercury Mystique, 2000-2000 Mercury Mystique
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6006, C-501, IC362, U2103, GN10185, 5C1118, 920-1015, C1341, 
...View more
item #1002H84U
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Denso 673-6202 Ignition Coil
DensoPart # 673-6202
Denso 673-6202 Ignition Coil
4.523 Reviews
$52.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2009-2019 Ford Escape, 2010-2020 Ford Fusion, 2013-2017 Ford Fusion, 2013-2017 Ford Fusion, 2013-2018 Ford C-Max, 2014-2016 Ford Transit Connect, 2014-2017 Ford Fusion, 2017-2017 Ford Fusion, 2017-2017 Ford Fusion, 2017-2018 Ford Transit Connect, 2018-2020 Ford Fusion, 2019-2019 Ford Transit Connect, 2019-2020 Ford Police Responder Hybrid, 2019-2020 Ford SSV Plug-In Hybrid, 2011-2012 Lincoln MKZ, 2013-2016 Lincoln MKZ, 2015-2018 Lincoln MKZ, 2017-2018 Lincoln MKZ, 2017-2019 Lincoln MKZ, 2017-2020 Lincoln MKZ
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6202, C-757, IC724, U5301, 9E5Z 12029-A, GN10507, UF621, 921-2141, 
...View more
item #1002H9CX
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Denso 673-6101 Ignition Coil
DensoPart # 673-6101
Denso 673-6101 Ignition Coil
4.523 Reviews
$101.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1988-1997 Ford Ranger, 1991-1993 Ford Escort, 1991-1993 Ford Mustang, 1992-1997 Ford Crown Victoria, 1994-1995 Ford Escort, 1994-1996 Ford Escort, 1994-1996 Ford Escort, 1994-1997 Ford Thunderbird, 1995-1998 Ford Contour, 1996-1996 Ford Escort, 1996-1998 Ford Mustang, 1996-2001 Ford Explorer, 1997-1999 Ford E-150 Econoline, 1997-1999 Ford E-150 Econoline Club Wagon, 1997-1999 Ford Expedition, 1997-1999 Ford F-150, 1997-1999 Ford F-250, 1997-2003 Ford Escort, 1998-2001 Ford Ranger, 1999-1999 Ford Contour
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorGrey
Part interchange
673-6101, C-506, IC32, U2005, GN10177, 5C1117, 920-1013, C924, 
...View more
item #1002H7SY
Show less
Denso 673-6010 Ignition Coil
DensoPart # 673-6010
Denso 673-6010 Ignition Coil
4.523 Reviews
$42.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2003-2007 Ford Focus, 2005-2007 Ford Focus, 2005-2007 Ford Focus, 2005-2008 Ford Escape, 2007-2007 Ford Focus, 2007-2007 Ford Focus, 2008-2011 Ford Focus, 2008-2011 Ford Focus, 2008-2011 Ford Focus, 2009-2011 Ford Focus, 2010-2013 Ford Transit Connect, 2004-2005 Mazda 3, 2005-2005 Mazda 6, 2005-2006 Mazda Tribute, 2008-2008 Mazda Tribute, 2005-2008 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6010, C-676, IC517, U5019, GN10229, 5C1443, 921-2065, C1453, 
...View more
item #1002HATA
Show less
Denso 673-6200 Ignition Coil
DensoPart # 673-6200
Denso 673-6200 Ignition Coil
4.523 Reviews
$47.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 Ford Expedition, 2008-2008 Ford Explorer, 2008-2008 Ford Explorer Sport Trac, 2008-2008 Ford F-150, 2008-2008 Ford F-250 Super Duty, 2008-2008 Ford F-250 Super Duty, 2008-2008 Ford F-350 Super Duty, 2008-2008 Ford F-350 Super Duty, 2008-2008 Ford F-450 Super Duty, 2008-2008 Ford F-53 Motorhome Chassis, 2008-2008 Ford F-550 Super Duty, 2008-2008 Ford Mustang, 2009-2009 Ford F-53 Motorhome Chassis, 2009-2010 Ford Explorer, 2009-2010 Ford Explorer Sport Trac, 2009-2010 Ford F-150, 2009-2010 Ford F-150, 2009-2010 Ford F-250 Super Duty, 2009-2010 Ford F-250 Super Duty, 2009-2010 Ford F-350 Super Duty
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-6200, C-800, IC697, U5260, 8L3Z 12029-A, GN10233, FD509, 921-2066, 
...View more
item #1002H8AC
Show less
Direct Ignition Coil - Denso 673-6014
DensoPart # 673-6014
Direct Ignition Coil - Denso 673-6014
4.523 Reviews
$131.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1990-1995 Ford Thunderbird, 1994-1994 Ford Mustang, 1995-1995 Ford Thunderbird, 1995-2000 Ford Contour, 1995-2000 Ford Windstar, 1996-1997 Ford Thunderbird, 1996-1999 Ford Taurus, 1996-2000 Ford Mustang, 1998-2000 Ford E-150 Econoline, 1998-2000 Ford E-150 Econoline Club Wagon, 1998-2000 Ford E-250 Econoline, 1998-2000 Ford F-150, 1998-2000 Ford Ranger, 1995-1996 Jaguar XJ12, 1998-2000 Mazda B3000, 2000-2001 Mazda MPV, 1989-1990 Mercury Cougar, 1995-1997 Mercury Cougar, 1995-2000 Mercury Mystique, 1996-1999 Mercury Sable
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury
Quantity1
Item LocatedUnited States
ColorGrey
Part interchange
673-6014, C-505, IC38, U2020, GN10180, 920-1014, 5C1123, C901, 
...View more
item #1002HADV
Show less
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Page 6 of 10

Premium Automotive Ignition Coils | Restore Engine Power & Fuel Efficiency

Are you experiencing rough idling, engine misfires, or a sudden drop in fuel economy? It might be time for an ignition coil replacement. As a heart of your vehicle's ignition system, a reliable automotive ignition coil transforms your battery's low voltage into the thousands of volts required to create an electric spark in the spark plugs, keeping your engine running smoothly.

At A-Premium, we provide OE-matching car ignition coil solutions designed to eliminate misfires, restore lost horsepower, and ensure reliable cold starts in any weather condition.

Anatomy of an A-Premium engine ignition coil

Anatomy of an A-Premium Engine Ignition Coil

To understand what makes a high-performance engine ignition coil, let’s look inside its core engineering:

  1. Integrated Driving Circuit: Features a compact, smart-integrated electronic chip at the top of the coil to ensure precise ignition timing and robust thermal resistance.
  2. Superior Quality Components & Materials: Wrapped with high-grade copper wire and premium epoxy resin insulation to prevent voltage leaks and withstand extreme under-hood heat.
  3. Rigorously Tested & Inspected: 100% factory stress-tested against thermal shock and vibration to guarantee long-lasting durability.
  4. Diagonal Windings Technology: Eliminates heavy, sectioned bobbins through advanced space-saving diagonal winding, significantly reducing the overall size and weight while maximizing energy output.

Our Advantages: Built for Real-World Driving Scenarios

Our automotive ignition coil lineup is engineered to solve everyday driving pains:

  • The Daily Commute (Stop-and-Go Traffic): Misfires often happen when idling at red lights. Our coils deliver stable, continuous voltage output, eliminating rough idles and ensuring seamless acceleration.
  • Extreme Weather Performance: Cheap coils crack under freezing winter temperatures or intense summer engine heat. Our high-dielectric epoxy coatings prevent micro-cracks, ensuring your engine fires up instantly on the first crank.
  • Fuel & Emission Savings: A weak spark leads to unburnt fuel. Upgrading your worn car ignition coil ensures complete combustion, optimizing your MPG and helping you pass emissions tests effortlessly.

Smart Buyer’s Guide: How to Choose the Best Ignition Coil

Navigating the market for an engine ignition coil can be confusing. Here is what smart buyers look for to get the perfect match:

1. Matching by Vehicle Make & Fitment (The #1 Priority)

Ignition systems are highly sensitive. A generic coil will cause error codes. Most users search and filter by their vehicle’s specific Year, Make, and Model, such as Ford EcoBoost, Honda VTEC, or Toyota VVT-i systems. Always use our fitment selector at the top of the page to find the exact OEM specification for your car.

2. When to Buy an Ignition Coil & Spark Plug Kit? (The Smart Money Move)

Should you buy them together? 90% of mechanics recommend it.

  • The Reason: A worn, old spark plug has a wider gap, which forces the engine ignition coil to work twice as hard to bridge that gap. This extra workload overheats the coil and burns it out prematurely.
  • The Strategy: If your vehicle has crossed 80,000 miles and you are doing an ignition coil replacement, always buy a complete coil and spark plug kit. It saves you from tearing down the engine twice and protects your new investment.

Replacement Checklist: When to Replace vs. When to Keep

Not every engine hiccup requires a new coil. Use this quick checklist to decide your next move:

Time to Replace if:

  • You have a confirmed OBD-II trouble code between P0300 to P0308, indicating a specific cylinder misfire.
  • The plastic housing of the coil shows visible hairline cracks, melting, or burning.
  • Your vehicle has passed 100,000 miles, as ignition coils are wear items and generally degrade after this milestone.

Do NOT Replace Yet if:

  • Your car won't crank at all. This is usually a dead battery or starter motor issue, not the ignition coil.
  • You have a misfire code but haven't checked for oil leaks. Often, a leaking valve cover gasket floods the spark plug well with oil, causing a short circuit. Simply cleaning the oil and replacing the gasket might fix the issue without needing a new coil.

Frequently Asked Questions (FAQ)

Can I replace just one faulty ignition coil, or should I replace them all at once?

If your vehicle has low mileage, replacing just the single failed car ignition coil is perfectly fine. However, if your car has over 80,000 miles, all the coils have experienced the same amount of heat and stress. When one fails, the others are usually close behind. Replacing the whole set at once ensures consistent engine balance and saves on future labor costs.

What are the most common symptoms of a failing engine ignition coil?

The most prominent signs include a flashing Check Engine Light, sudden engine shaking, especially at idle or under load, poor fuel economy, backfiring, and a noticeable hesitation or jerking when you step on the gas pedal.

How long does a typical automotive ignition coil last?

High-quality OEM-grade ignition coils are built to last between 80,000 to 100,000 miles. However, exposure to excessive engine vibration, oil leaks from a failing valve cover gasket, or neglected, worn-out spark plugs can drastically shorten their lifespan.

Will changing my ignition coils improve my gas mileage?

Yes. If your current coils are weak or failing, they create incomplete combustion in the cylinders, meaning your engine is literally throwing away unburnt fuel through the exhaust. Performing an ignition coil replacement restores 100% combustion efficiency, bringing your fuel economy back to factory-fresh levels.

Is it safe to drive with a misfiring ignition coil?

No, you should avoid it. Driving with a failed ignition coil means unburnt raw fuel is entering your exhaust system. This fuel will quickly ignite inside your catalytic converter, overheating it and melting its internal structure. A catalytic converter replacement is significantly more expensive than a simple ignition coil swap.

Related Blogs

P0302 Code: How to Diagnose and Fix a Cylinder 2 Misfire

The P0302 diagnostic trouble code indicates a misfire condition in cylinder 2 of the engine. Specifically, the P0302 code is triggered when the engine control module (ECM) detects that cylinder 2 is not firing properly or is experiencing a misfire.

Jul 30, 2026

What Happens When an Ignition Coil Goes Bad?

The automobile industry has taken the world by storm. New models with the latest technologies and outstanding features are launched every day. The variations, designs, models, and qualities are taking us back, but still, there is a need to make these intr

Jul 21, 2026

How To Replace Ignition Coil Ford F150?

An ignition coil in Ford F150 and other cars is a part of the engine responsible for amping up the low-volt battery power in your car to enough voltage so that it can easily create a spark in the spark plug to start the engine.

Jul 21, 2026

How To Check Ignition Coil with A Multimeter?

There could be multiple reasons for checking the ignition coil; one of the primary reasons could be that you are facing difficulty starting the vehicle when you crank the key into the ignition. You are probably right if you guess this problem is because o

Jul 21, 2026

How Small Engine Ignition Coil Can Be Tested with A Multimeter?

Does it happen that when you twist the key into the ignition, the car won't start up? Do you know why? This happens because the engines and batteries often have damaged ignition coils. In simple words, the engine ignition coil is one of the engine's eleme

Jul 21, 2026