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Kia Optima Ignition Coil

92 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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Walker Products 921-2157 Ignition CoilWalker Products 921-2157 Ignition Coil
Walker ProductsPart # 921-2157
Walker Products 921-2157 Ignition Coil
4.328 Reviews
$33.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2007-2007 Hyundai Santa Fe, 2008-2009 Hyundai Santa Fe, 2006-2006 Kia Optima, 2007-2007 Kia Optima, 2007-2010 Kia Rondo, 2008-2010 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
921-2157, 48975, 273013E400, 273013E410, 12458, BB-2558, C782, C-782, 
...View more
item #1001L405
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Standard UF817 Ignition Coil
StandardPart # UF817
Standard UF817 Ignition Coil
4.446 Reviews
$63.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2015-2019 Hyundai Sonata, 2016-2016 Hyundai Veloster, 2016-2017 Hyundai Veloster, 2016-2017 Hyundai Veloster, 2016-2018 Hyundai Tucson, 2017-2019 Hyundai Elantra, 2018-2020 Hyundai Elantra GT, 2018-2020 Hyundai Kona, 2019-2021 Hyundai Veloster, 2021-2021 Hyundai Kona, 2016-2016 Kia Forte Koup, 2016-2018 Kia Forte5, 2016-2020 Kia Optima, 2017-2022 Kia Soul, 2019-2023 Kia Forte, 2020-2022 Kia Seltos, 2023-2023 Kia Seltos, 2023-2023 Kia Seltos, 2023-2023 Kia Seltos
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
UF817, 178-8580, GN10910, IC924, C-938, E1317, C50044DL, IGNB10074, 
...View more
item #10016SR8
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Walker Products 921-2158 Ignition Coil
Walker ProductsPart # 921-2158
Walker Products 921-2158 Ignition Coil
4.328 Reviews
$43.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2007-2007 Hyundai Santa Fe, 2006-2006 Kia Optima, 2007-2007 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
921-2158, 50224, 273013E100, 12419, C826, C-826, 36-8124, C1725, 
...View more
item #1001L5LK
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Spectra Premium C-773 Ignition Coil
Spectra PremiumPart # C-773
Spectra Premium C-773 Ignition Coil
52 Reviews
$44.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2017-2017 Genesis G80, 2009-2012 Hyundai Genesis, 2009-2014 Hyundai Sonata, 2010-2012 Hyundai Santa Fe, 2010-2013 Hyundai Tucson, 2010-2014 Hyundai Genesis Coupe, 2011-2016 Hyundai Equus, 2012-2016 Hyundai Genesis, 2013-2016 Hyundai Santa Fe Sport, 2014-2015 Hyundai Tucson, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2007-2012 Kia Rondo, 2009-2011 Kia Borrego, 2010-2013 Kia Forte, 2010-2013 Kia Forte Koup, 2010-2013 Kia Optima, 2011-2014 Kia Sorento, 2011-2015 Kia Sportage, 2012-2013 Kia Forte5
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
C-773, CUF2153, UF611, UF611T, 273003F100, 273002G000, 3002G000, 50130, 
...View more
item #1000Z78H
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Spectra Premium C-781 Ignition Coil
Spectra PremiumPart # C-781
Spectra Premium C-781 Ignition Coil
52 Reviews
$39.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2017-2017 Genesis G80, 2006-2007 Hyundai Sonata, 2006-2017 Hyundai Azera, 2007-2009 Hyundai Santa Fe, 2007-2010 Hyundai Entourage, 2007-2012 Hyundai Veracruz, 2008-2010 Hyundai Sonata, 2009-2016 Hyundai Genesis, 2010-2012 Hyundai Santa Fe, 2010-2014 Hyundai Genesis Coupe, 2013-2018 Hyundai Santa Fe, 2013-2019 Hyundai Santa Fe XL, 2015-2016 Hyundai Genesis Coupe, 2006-2012 Kia Sedona, 2007-2009 Kia Amanti, 2007-2009 Kia Magentis, 2007-2009 Kia Optima, 2007-2009 Kia Sorento, 2009-2011 Kia Borrego, 2011-2013 Kia Sorento
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
C-781, CUF2457, UF546, UF546T, 72923014416, 273013C010, 273013C000, 3013C010, 
...View more
item #1000Z434
Show less
Walker Products 921-2018 Ignition Coil
Walker ProductsPart # 921-2018
Walker Products 921-2018 Ignition Coil
4.328 Reviews
$44.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-2005 Hyundai Sonata, 2001-2004 Hyundai Santa Fe, 2001-2005 Kia Optima, 2006-2006 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
921-2018, 50033, IC-1200, 48649, 2730138020, GN10303, 12812, ZS262, 
...View more
item #1001L2L9
Show less
1 pc Ignition Coil | 4-Pin Terminal | Aisin ESCAZ-00331
AisinPart # ESCAZ-00331
1 pc Ignition Coil | 4-Pin Terminal | Aisin ESCAZ-00331
4.6567 Reviews
$32.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016 - 2018 Kia Sorento, 2017 - 2022 Kia Sportage, 2016 - 2020 Kia Sorento, 2015 - 2019 Hyundai Sonata, 2016 - 2018 Hyundai Santa Fe Sport, 2015 - 2019 Hyundai Sonata, 2019 - 2023 Genesis G70, 2016 - 2016 Kia Rondo, 2016 - 2017 Kia Optima, 2018 - 2020 Kia Optima, 2016 - 2017 Kia Optima, 2019 - 2022 Hyundai Veloster N, 2022 - 2024 Hyundai Elantra N, 2018 - 2021 Hyundai Tucson, 2018 - 2020 Kia Optima, 2016 - 2018 Hyundai Santa Fe Sport, 2017 - 2020 Genesis G80, 2017 - 2022 Kia Sportage, 2022 - 2023 Hyundai Kona N, 2019 - 2020 Hyundai Santa Fe
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273002GGA0
ConditionNew
item #10186H7Y
Show less
Walker Products 921-92018 Ignition Coil
Walker ProductsPart # 921-92018
Walker Products 921-92018 Ignition Coil
4.328 Reviews
$60.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-2005 Hyundai Sonata, 2001-2004 Hyundai Santa Fe, 2001-2005 Kia Optima, 2006-2006 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
921-92018
item #1001LHLN
Show less
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00365
AisinPart # ESCAZ-00365
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00365
4.6567 Reviews
$26.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2006 - 2010 Kia Sedona, 2011 - 2013 Kia Sorento, 2009 - 2011 Kia Borrego, 2009 - 2010 Hyundai Sonata, 2007 - 2008 Kia Optima, 2007 - 2012 Hyundai Veracruz, 2014 - 2014 Kia Sedona, 2007 - 2010 Kia Rondo, 2011 - 2012 Kia Sedona, 2010 - 2016 Hyundai Genesis Coupe, 2007 - 2008 Hyundai Entourage, 2014 - 2017 Kia Sorento, 2006 - 2006 Kia Optima, 2015 - 2017 Kia K900, 2007 - 2009 Kia Sorento, 2007 - 2017 Hyundai Azera, 2007 - 2009 Hyundai Santa Fe, 2007 - 2007 Kia Magentis, 2014 - 2015 Kia Cadenza, 2006 - 2007 Hyundai Sonata
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273013C000, 273013C010, 273013C100
ConditionNew
item #10186P74
Show less
1 pc Ignition Coil | 4-Blade Terminal | Aisin ESCAZ-00398
AisinPart # ESCAZ-00398
1 pc Ignition Coil | 4-Blade Terminal | Aisin ESCAZ-00398
4.6567 Reviews
$59.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2001 - 2001 Kia Optima, 2004 - 2005 Kia Optima, 2001 - 2001 Kia Magentis, 1999 - 2001 Hyundai Sonata, 2002 - 2006 Kia Magentis, 2005 - 2005 Hyundai Sonata
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
2730137100
ConditionNew
item #10186NSL
Show less
4 pc Ignition Coil | 4-Pin Terminal | Aisin ESCAZ-00332
AisinPart # ESCAZ-00332
4 pc Ignition Coil | 4-Pin Terminal | Aisin ESCAZ-00332
4.6567 Reviews
$100.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2016 - 2018 Kia Sorento, 2016 - 2020 Kia Sorento, 2018 - 2020 Kia Stinger, 2015 - 2019 Hyundai Sonata, 2019 - 2020 Hyundai Santa Fe, 2017 - 2021 Kia Sportage, 2017 - 2017 Kia Optima, 2018 - 2019 Hyundai Sonata, 2016 - 2018 Hyundai Santa Fe Sport, 2016 - 2020 Kia Optima, 2017 - 2020 Genesis G80, 2018 - 2020 Hyundai Tucson, 2017 - 2019 Genesis G90, 2019 - 2020 Genesis G70
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity4
Item LocatedUnited States
Part interchange
273002GGA0
ConditionNew
item #10189QT9
Show less
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00394
AisinPart # ESCAZ-00394
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00394
4.6567 Reviews
$26.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2007 - 2007 Hyundai Santa Fe, 2006 - 2006 Kia Optima, 2008 - 2009 Hyundai Santa Fe
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273013E100
ConditionNew
item #10186KXE
Show less
Walker Products 921-2303 Ignition Coil
Walker ProductsPart # 921-2303
Walker Products 921-2303 Ignition Coil
4.328 Reviews
$67.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2017-2022 Genesis G90, 2018-2020 Genesis G80, 2019-2023 Genesis G70, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2015-2015 Hyundai Sonata, 2016-2017 Hyundai Sonata, 2016-2018 Hyundai Sonata, 2016-2018 Hyundai Sonata, 2016-2019 Hyundai Sonata, 2016-2019 Hyundai Sonata, 2017-2017 Hyundai Sonata, 2017-2018 Hyundai Santa Fe Sport, 2018-2018 Hyundai Sonata, 2018-2021 Hyundai Tucson, 2019-2019 Hyundai Sonata
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
921-2303, 5C2091, 273002GGA0, GN10730, UF764
item #1001L2GL
Show less
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00382
AisinPart # ESCAZ-00382
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00382
4.6567 Reviews
$36.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2013 - 2015 Hyundai Santa Fe Sport, 2010 - 2012 Hyundai Santa Fe, 2011 - 2013 Hyundai Tucson, 2010 - 2015 Hyundai Tucson, 2012 - 2013 Kia Forte5, 2010 - 2013 Kia Forte Koup, 2012 - 2016 Hyundai Genesis, 2009 - 2011 Kia Borrego, 2012 - 2016 Hyundai Equus, 2008 - 2014 Hyundai Sonata, 2011 - 2015 Kia Sorento, 2012 - 2013 Kia Forte5, 2010 - 2013 Kia Forte Koup, 2011 - 2011 Hyundai Equus, 2010 - 2014 Hyundai Genesis Coupe, 2009 - 2012 Hyundai Genesis, 2015 - 2017 Kia K900, 2011 - 2016 Kia Sportage, 2010 - 2013 Kia Forte, 2008 - 2015 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273002G000, 273003F100
ConditionNew
item #10186HD5
Show less
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00380
AisinPart # ESCAZ-00380
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00380
4.6567 Reviews
$31.99
Low stock: Only 3 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2007 - 2011 Kia Rondo, 2007 - 2010 Kia Magentis, 2010 - 2010 Kia Magentis, 2006 - 2009 Hyundai Santa Fe, 2006 - 2010 Kia Optima, 2009 - 2010 Hyundai Entourage
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273013E400
ConditionNew
item #10186GHN
Show less
Denso 673-8208 Ignition Coil
DensoPart # 673-8208
Denso 673-8208 Ignition Coil
4.523 Reviews
$77.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2017 Hyundai Sonata, 2016-2017 Hyundai Sonata, 2016-2019 Hyundai Sonata, 2016-2019 Hyundai Sonata, 2016-2019 Hyundai Sonata, 2017-2017 Hyundai Elantra, 2017-2017 Hyundai Sonata, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2018 Hyundai Elantra, 2017-2019 Hyundai Sonata, 2018-2018 Hyundai Elantra, 2018-2018 Hyundai Elantra, 2018-2018 Hyundai Sonata, 2018-2018 Hyundai Sonata, 2018-2021 Hyundai Kona
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-8208, 27300-2E601, UF816, GN10877
item #1002HDX0
Show less
1 pc Ignition Coil | 3-Blade Terminal | Aisin ESCAZ-00388
AisinPart # ESCAZ-00388
1 pc Ignition Coil | 3-Blade Terminal | Aisin ESCAZ-00388
4.6567 Reviews
$32.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1999 - 2005 Hyundai Sonata, 2001 - 2006 Kia Magentis, 2006 - 2006 Kia Optima, 2001 - 2006 Hyundai Santa Fe, 2001 - 2005 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
2730138020
ConditionNew
item #10186L77
Show less
Direct Ignition Coil - Denso 673-8205
DensoPart # 673-8205
Direct Ignition Coil - Denso 673-8205
4.523 Reviews
$94.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 1999-2005 Hyundai Sonata, 2001-2004 Hyundai Santa Fe, 2001-2006 Kia Optima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-8205, C-602, IC396, U4006, 27301-38020, 178-8294, UF285, GN10303, 
...View more
item #1002H99D
Show less
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00396
AisinPart # ESCAZ-00396
1 pc Ignition Coil | 2-Blade Terminal | Aisin ESCAZ-00396
4.6567 Reviews
$26.99
Low stock: Only 4 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2011 - 2016 Kia Sportage, 2013 - 2015 Hyundai Santa Fe Sport, 2012 - 2012 Kia Rondo, 2011 - 2015 Kia Optima, 2015 - 2015 Kia Rondo, 2011 - 2014 Hyundai Sonata
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
Part interchange
273002G700
ConditionNew
item #10186N1R
Show less
Denso 673-8312 Ignition Coil
DensoPart # 673-8312
Denso 673-8312 Ignition Coil
4.523 Reviews
$85.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2017-2017 Genesis G80, 2006-2008 Hyundai Sonata, 2006-2017 Hyundai Azera, 2007-2008 Hyundai Entourage, 2007-2009 Hyundai Santa Fe, 2007-2012 Hyundai Veracruz, 2009-2010 Hyundai Sonata, 2009-2016 Hyundai Genesis, 2010-2012 Hyundai Santa Fe, 2010-2014 Hyundai Genesis Coupe, 2013-2018 Hyundai Santa Fe, 2015-2016 Hyundai Genesis Coupe, 2019-2019 Hyundai Santa Fe XL, 2006-2009 Kia Optima, 2006-2012 Kia Sedona, 2007-2009 Kia Amanti, 2007-2009 Kia Rondo, 2007-2009 Kia Sorento, 2009-2009 Kia Borrego, 2011-2013 Kia Sorento
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Kia Optima
Quantity1
Item LocatedUnited States
ColorGrey
Part interchange
673-8312, C-781, IC626, U5087, 27301-3C010, 27301-3C000, 178-8292, UF546, 
...View more
item #1002HD83
Show less
Page 3 of 5

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.

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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

P0351: Ignition Coil A Primary/Secondary Circuit Malfunction

Decode the P0351 Ignition Coil A fault. Learn its meaning, symptoms, and causes like failed coils or bad wiring. Master the DIY diagnosis, including the coil swap test, to avoid costly PCM replacements and restore engine performance efficiently.

Aug 10, 2026

P0306 Code: Cylinder 6 Misfire Causes, Diagnosis, and Fix

Decode the P0306 Cylinder 6 Misfire code. This step-by-step guide helps you pinpoint the exact cause, avoid unnecessary part replacements, reduce repair costs, and prevent severe engine damage.

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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

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