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Lexus Ignition Coil

188 items

Replace a weak ignition coil before misfires, rough starts, or poor acceleration turn into bigger engine trouble. Find coils for everyday repair and maintenance.

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Spectra Premium C-749 Ignition CoilSpectra Premium C-749 Ignition Coil
Spectra PremiumPart # C-749
Spectra Premium C-749 Ignition Coil
52 Reviews
$85.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1998-2000 Lexus GS400, 1998-2000 Lexus LS400, 1998-2000 Lexus SC400
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-749, CUF229, U5194, 368129, 521588, UF229, 88921383, 9091902228, 
...View more
item #1000Z5T7
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Spectra Premium C-710 Ignition Coil
Spectra PremiumPart # C-710
Spectra Premium C-710 Ignition Coil
52 Reviews
$70.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2023 Lexus GX460, 2022-2023 Toyota 4Runner, 2022-2022 Toyota Sequoia, 2019-2019 Toyota Corolla, 2019-2019 Toyota Corolla, 2016-2016 Lexus IS300, 2015-2021 Lexus NX300h, 2015-2021 Toyota Tundra, 2015-2016 Lexus RC350, 2013-2021 Lexus LX570, 2013-2021 Toyota Land Cruiser, 2013-2021 Toyota Sequoia, 2013-2018 Lexus ES300h, 2013-2018 Toyota Avalon, 2013-2018 Toyota RAV4, 2013-2015 Lexus GS350, 2013-2015 Lexus GS450h, 2013-2014 Toyota Tundra, 2013-2014 Toyota Tundra, 2011-2021 Toyota 4Runner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-710, CUF230, CUF2446, UF507, UF630, UF587, UF630T, 90919A2005, 
...View more
item #1000Z6XV
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Spectra Premium C-670 Ignition Coil
Spectra PremiumPart # C-670
Spectra Premium C-670 Ignition Coil
52 Reviews
$60.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2013-2013 Toyota Matrix, 2012-2013 Toyota Corolla, 2010-2012 Lexus HS250h, 2009-2010 Pontiac Vibe, 2009-2010 Toyota Matrix, 2007-2011 Toyota Camry, 2007-2007 Toyota Highlander, 2006-2008 Toyota RAV4, 2006-2006 Toyota Camry, 2005-2010 Scion tC, 2002-2006 Toyota Solara, 2002-2005 Toyota Camry, 2001-2005 Toyota RAV4, 2001-2004 Toyota Highlander
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-670, CUF333, UF333T, UF333, UF494, UF333TK4, 9091902266, 50083, 
...View more
item #1000Z6RA
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Spectra Premium C-1045 Ignition Coil
Spectra PremiumPart # C-1045
Spectra Premium C-1045 Ignition Coil
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2008-2011 Lexus GS460
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-1045, U5238, UF608, 195120, 9091902254, 9091902261, GN10850, GN10662, 
...View more
item #1000Z3YP
Show less
Spectra Premium C-696 Ignition Coil
Spectra PremiumPart # C-696
Spectra Premium C-696 Ignition Coil
52 Reviews
$60.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Toyota C-HR, 2019-2019 Toyota Corolla, 2018-2021 Toyota C-HR, 2017-2018 Toyota Corolla iM, 2017-2017 Toyota Prius Prime, 2016-2016 Scion iM, 2014-2018 Toyota Corolla, 2014-2014 Toyota Matrix, 2012-2017 Toyota Prius V, 2012-2015 Toyota Prius Plug-In, 2011-2017 Lexus CT200h, 2010-2017 Toyota Prius, 2009-2013 Toyota Corolla, 2009-2013 Toyota Matrix, 2009-2010 Pontiac Vibe, 2008-2014 Scion xD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-696, CUF596, UF596, UF619, UF596T, UF596TK4, 9091902258, 9091902252, 
...View more
item #1000Z5TC
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Spectra Premium C-627 Ignition Coil
Spectra PremiumPart # C-627
Spectra Premium C-627 Ignition Coil
52 Reviews
$29.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1996-1996 Toyota Camry, 1994-1995 Toyota Camry, 1994-1994 Toyota T100, 1993-1995 Toyota 4Runner, 1993-1995 Toyota MR2, 1993-1995 Toyota Pickup, 1993-1993 Toyota T100, 1992-1997 Lexus SC400, 1992-1993 Toyota Celica, 1992-1992 Toyota 4Runner, 1992-1992 Toyota Celica, 1992-1992 Toyota MR2, 1992-1992 Toyota MR2, 1992-1992 Toyota Pickup, 1991-1991 Toyota MR2, 1990-1997 Lexus LS400, 1990-1991 Toyota Celica
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
C-627, CUF72, UF72T, UF72, 1908050011, 9091902197, 1909050010, 1908050010, 
...View more
item #1000Z7HQ
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Standard UF848 Ignition Coil
StandardPart # UF848
Standard UF848 Ignition Coil
4.451 Reviews
$64.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2023 Lexus NX250, 2022-2023 Toyota Corolla Cross, 2021-2023 Lexus ES250, 2020-2023 Toyota Camry, 2020-2023 Toyota Corolla, 2020-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2023 Toyota RAV4, 2019-2022 Lexus UX200, 2019-2020 Toyota Camry, 2019-2019 Toyota Corolla, 2018-2023 Toyota Camry, 2018-2023 Toyota Camry, 2018-2023 Toyota Camry, 2018-2023 Toyota Camry, 2018-2020 Toyota Camry
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF848, 178-8596, GN10952, IC955, IGC0224, E1348, C50066DL, IGNB10096, 
...View more
item #10016Q15
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Standard UF828 Ignition Coil
StandardPart # UF828
Standard UF828 Ignition Coil
4.451 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2020-2022 Toyota Highlander, 2019-2023 Lexus ES350, 2019-2022 Lexus RX350, 2019-2022 Lexus RX450hL, 2019-2022 Toyota Avalon, 2019-2019 Toyota Highlander, 2018-2022 Lexus RX350L, 2018-2022 Toyota Camry, 2018-2018 Lexus RX350, 2018-2018 Toyota Prius V, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2016-2022 Lexus RX450h, 2016-2020 Toyota Sienna, 2016-2017 Lexus RX350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF828, 178-8558, GN10908, IC935, C-1046, IGC0214, E1328, C50036DL, 
...View more
item #10016TZD
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Standard UF811 Ignition Coil
StandardPart # UF811
Standard UF811 Ignition Coil
4.451 Reviews
$120.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2022 Toyota Prius AWD-e, 2018-2021 Lexus NX300, 2018-2020 Lexus RC300, 2018-2019 Lexus GS300, 2018-2019 Lexus IS300, 2017-2022 Toyota Prius Prime, 2016-2022 Toyota Prius, 2016-2017 Lexus GS200t, 2016-2017 Lexus IS200t, 2016-2017 Lexus RC200t, 2015-2017 Lexus NX200t, 2012-2015 Toyota Prius Plug-In
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF811, 178-8593, GN10861, IC918, 49181, 36-8355, E1311, C50035DL, 
...View more
item #10016Q5Z
Show less
Standard UF849 Ignition Coil
StandardPart # UF849
Standard UF849 Ignition Coil
4.451 Reviews
$90.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2023-2023 Lexus RX350, 2023-2023 Toyota Crown, 2023-2023 Toyota GR Corolla, 2023-2023 Toyota Highlander, 2023-2023 Toyota Prius, 2023-2023 Toyota Prius AWD-e, 2023-2023 Toyota Prius Prime, 2023-2023 Toyota RAV4, 2022-2023 Lexus LX600, 2022-2023 Lexus NX350, 2022-2023 Lexus NX350h, 2022-2023 Lexus NX450h+, 2022-2023 Toyota Camry, 2022-2023 Toyota RAV4, 2022-2023 Toyota Tundra, 2022-2023 Toyota Tundra, 2022-2023 Toyota Tundra, 2022-2023 Toyota Tundra, 2022-2023 Toyota Tundra, 2021-2023 Toyota Camry
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF849, 178-8598, GN10960, IC956, E1349, IGNB10120, 9091902277, 90919A2010, 
...View more
item #10016TCA
Show less
Standard UF916 Ignition Coil
StandardPart # UF916
Standard UF916 Ignition Coil
4.451 Reviews
$94.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2018-2021 Lexus NX300, 2018-2020 Lexus RC300, 2018-2019 Lexus GS300, 2018-2019 Lexus IS300, 2016-2017 Lexus GS200t, 2016-2017 Lexus IS200t, 2016-2017 Lexus RC200t, 2015-2017 Lexus NX200t
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF916, 178-8592, GN10741, IC1023, 49119, C-966, E1416, 9091902269, 
...View more
item #10016VEH
Show less
Walker Products 921-2122 Ignition Coil
Walker ProductsPart # 921-2122
Walker Products 921-2122 Ignition Coil
4.330 Reviews
$54.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2019 Toyota Corolla, 2016-2016 Lexus GS450h, 2016-2016 Lexus IS300, 2016-2016 Lexus IS350, 2016-2016 Lexus RC300, 2016-2016 Lexus RC350, 2015-2021 Lexus NX300h, 2015-2015 Lexus RC350, 2013-2022 Toyota Sequoia, 2013-2021 Lexus LX570, 2013-2021 Toyota Land Cruiser, 2013-2018 Lexus ES300h, 2013-2018 Toyota Avalon, 2013-2018 Toyota RAV4, 2013-2015 Lexus GS350, 2013-2015 Lexus GS450h, 2012-2015 Scion iQ, 2011-2024 Toyota 4Runner, 2011-2021 Toyota Tundra, 2011-2016 Scion tC
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-2122, IC-521, IC-522, GN10366, 12446, C710, C-710, 134038, 
...View more
item #1001L3U3
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Walker Products 928-4087-6 Ignition Coil Set
Walker ProductsPart # 928-4087-6
Walker Products 928-4087-6 Ignition Coil Set
4.330 Reviews
$275.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2022 Toyota Highlander, 2019-2019 Toyota Highlander, 2019-2019 Toyota Highlander, 2018-2022 Lexus RX350L, 2018-2022 Lexus RX450hL, 2017-2021 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2016-2022 Lexus RX350, 2016-2022 Lexus RX450h, 2014-2020 Toyota Sienna, 2013-2022 Toyota Avalon, 2011-2013 Toyota Sienna, 2010-2015 Lexus RX450h, 2009-2015 Toyota Venza, 2008-2016 Toyota Highlander
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
QuantityOne Set
Item LocatedUnited States
Part interchange
928-4087-6, 50099, IC-509, 40260, GN10366, 4T9, 5C1658, 12430, 
...View more
item #1001P5P5
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Walker Products 921-2089 Ignition Coil
Walker ProductsPart # 921-2089
Walker Products 921-2089 Ignition Coil
4.330 Reviews
$48.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2019 Toyota Highlander, 2019-2019 Toyota Highlander, 2018-2022 Lexus RX350L, 2018-2022 Lexus RX450hL, 2017-2022 Lexus RX350, 2017-2022 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2016-2022 Lexus RX450h, 2014-2020 Toyota Sienna, 2013-2022 Toyota Avalon, 2011-2013 Toyota Sienna, 2010-2015 Lexus RX450h, 2009-2015 Toyota Venza, 2008-2016 Toyota Highlander, 2007-2024 Lexus ES350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-2089, 50099, IC-509, 48726, GN10366, 4T9, 12430, C701, 
...View more
item #1001L60K
Show less
Walker Products 921-92015 Ignition Coil
Walker ProductsPart # 921-92015
Walker Products 921-92015 Ignition Coil
4.330 Reviews
$50.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2006 Toyota Camry, 2002-2003 Toyota Sienna, 2001-2003 Toyota Highlander, 2001-2001 Toyota Sienna, 2000-2004 Toyota Avalon, 1999-2003 Lexus ES300, 1999-2003 Lexus RX300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-92015
item #1001LHA6
Show less
Walker Products 921-2015 Ignition Coil
Walker ProductsPart # 921-2015
Walker Products 921-2015 Ignition Coil
4.330 Reviews
$60.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2006 Toyota Camry, 2002-2003 Toyota Sienna, 2001-2003 Toyota Highlander, 2001-2001 Toyota Sienna, 2000-2004 Toyota Avalon, 1999-2003 Lexus ES300, 1999-2003 Lexus RX300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-2015, 50110, IC-511, GN10536, 1T6, 12899, C528, C-528, 
...View more
item #1001L68Z
Show less
Walker Products 928-4066-6 Ignition Coil Set
Walker ProductsPart # 928-4066-6
Walker Products 928-4066-6 Ignition Coil Set
4.330 Reviews
$253.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2006 Toyota Camry, 2002-2003 Toyota Sienna, 2001-2003 Toyota Highlander, 2001-2001 Toyota Sienna, 2000-2004 Toyota Avalon, 1999-2003 Lexus ES300, 1999-2003 Lexus RX300
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
QuantityOne Set
Item LocatedUnited States
Part interchange
928-4066-6, 50110, GN10536, 1T6, 12899, C528, C-528, 133846, 
...View more
item #1001P701
Show less
Walker Products 921-2056 Ignition Coil
Walker ProductsPart # 921-2056
Walker Products 921-2056 Ignition Coil
4.330 Reviews
$42.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2024 Lexus IS500, 2018-2024 Lexus LC500, 2016-2023 Toyota Tacoma, 2016-2020 Lexus GS F, 2015-2024 Lexus RC F, 2013-2015 Scion xB, 2011-2012 Toyota Matrix, 2010-2011 Toyota Tundra, 2010-2010 Toyota 4Runner, 2009-2010 Toyota Corolla, 2009-2010 Toyota Matrix, 2008-2014 Lexus IS F, 2008-2012 Scion xB, 2007-2011 Toyota Camry, 2007-2009 Toyota FJ Cruiser, 2007-2008 Toyota Solara, 2006-2006 Toyota Camry, 2006-2006 Toyota Highlander, 2005-2015 Toyota Tacoma, 2005-2009 Toyota Tundra
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-2056, 50259, IC-506, GN10323, 12850, C666, C-666, 133874, 
...View more
item #1001L5H6
Show less
Walker Products 928-4100-4 Ignition Coil Set
Walker ProductsPart # 928-4100-4
Walker Products 928-4100-4 Ignition Coil Set
4.330 Reviews
$180.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2019 Toyota Corolla, 2018-2022 Toyota C-HR, 2017-2018 Toyota Corolla iM, 2016-2016 Scion iM, 2014-2018 Toyota Corolla, 2012-2017 Toyota Prius V, 2012-2015 Toyota Prius Plug-In, 2011-2017 Lexus CT200h, 2010-2015 Toyota Prius, 2009-2013 Toyota Corolla, 2009-2013 Toyota Matrix, 2009-2010 Pontiac Vibe, 2008-2014 Scion xD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
QuantityOne Set
Item LocatedUnited States
Part interchange
928-4100-4, IC-518, IC-517, 40750, 47223C, GN10341, 5C1771, 94859442, 
...View more
item #1001P5VD
Show less
Walker Products 921-92089 Ignition Coil
Walker ProductsPart # 921-92089
Walker Products 921-92089 Ignition Coil
4.330 Reviews
$53.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2019-2019 Toyota Highlander, 2019-2019 Toyota Highlander, 2018-2022 Lexus RX350L, 2018-2022 Lexus RX450hL, 2017-2022 Lexus RX350, 2017-2022 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2017-2019 Toyota Highlander, 2016-2022 Lexus RX450h, 2014-2020 Toyota Sienna, 2013-2022 Toyota Avalon, 2011-2013 Toyota Sienna, 2010-2015 Lexus RX450h, 2009-2015 Toyota Venza, 2008-2016 Toyota Highlander, 2007-2023 Lexus ES350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus
Quantity1
Item LocatedUnited States
Part interchange
921-92089
item #1001LLE3
Show less
Page 8 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

P0353 Code: Ignition Coil C Circuit Causes and Fixes

Diagnose P0353 Ignition Coil C Circuit faults with this guide. Learn causes, symptoms, and fixes for misfires. Includes coil swap tests, wiring checks, and cost estimates to resolve issues safely and avoid catalytic converter damage.

Oct 19, 2026

P0352 Code: Ignition Coil B Circuit Malfunction Diagnosis & Fixes

Learn to locate Coil B, distinguish it from misfire codes, and follow a 5-step diagnostic guide to inspect wiring and connectors before replacing parts. Avoid costly guesswork and prevent catalytic converter damage with proper troubleshooting.

Oct 09, 2026

Bad Ignition Coil Symptoms: How to Tell What Failed

Spot bad ignition coil symptoms like misfires, rough idle, and power loss. Learn to read codes (P030x/P035x), perform a safe swap test, and decide whether to replace one coil or the full set.

Sep 28, 2026

Hard Start in Hot Weather? Testing Your Fuel Pump and Ignition Coil for Heat Soak

Heat soak is a "final warning" for aging parts. This guide dives into why fuel pumps and ignition coils fail in high heat and how to professionally diagnose these faults to solve your car’s hot-weather starting issues.

Sep 04, 2026

P0301 Code: Cylinder 1 Misfire Diagnosis and Fix

Experiencing engine issues? The P0301 code signals a cylinder 1 misfire, impacting performance and fuel efficiency. Discover the causes, symptoms, and effective fixes to quickly get your engine back to optimal performance.

Aug 10, 2026