Beat the Heat – Summer Essential Maintenance
24/7 Customer service
USD
Add your vehicle
Address
Login
Cart
Item
$0.00
Add your vehicle to ensure fitment/Choose a yearRequired Fields
Select a different vehicle
Make/Model
VIN
Save

GMC Terrain Ignition Coil

40 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.

  • All filters
  • Sort By
  • Year
  • Price
  • Placement on Vehicle
  • Brand
  • Color
  • Warranty
Spectra Premium C-761 Ignition CoilSpectra Premium C-761 Ignition Coil
Spectra PremiumPart # C-761
Spectra Premium C-761 Ignition Coil
52 Reviews
$36.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 Buick Enclave, 2010-2010 Buick Allure, 2010-2010 Buick LaCrosse, 2010-2016 Buick LaCrosse, 2010-2021 Buick Enclave, 2022-2024 Buick Enclave, 2007-2009 Cadillac SRX, 2008-2008 Cadillac CTS, 2009-2010 Cadillac STS, 2009-2015 Cadillac CTS, 2010-2013 Cadillac CTS, 2010-2016 Cadillac SRX, 2011-2011 Cadillac STS, 2013-2015 Cadillac ATS, 2013-2019 Cadillac XTS, 2016-2016 Cadillac CTS, 2016-2016 Cadillac CTS, 2016-2019 Cadillac ATS, 2016-2019 Cadillac CTS, 2017-2019 Cadillac CTS
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
C-761, CUF569, UF569, UF569T, D515C, 50228, E1069P, E1069, 
...View more
item #1000Z4C9
Show less
Walker Products 921-2109 Ignition Coil
Walker ProductsPart # 921-2109
Walker Products 921-2109 Ignition Coil
4.226 Reviews
$47.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 Buick Enclave, 2010-2010 Buick LaCrosse, 2010-2016 Buick LaCrosse, 2010-2022 Buick Enclave, 2007-2009 Cadillac SRX, 2008-2008 Cadillac CTS, 2009-2015 Cadillac CTS, 2010-2010 Cadillac STS, 2010-2014 Cadillac CTS, 2010-2016 Cadillac SRX, 2011-2011 Cadillac STS, 2013-2015 Cadillac ATS, 2013-2019 Cadillac XTS, 2016-2016 Cadillac CTS, 2016-2016 Cadillac CTS, 2016-2019 Cadillac ATS, 2016-2019 Cadillac CTS, 2017-2019 Cadillac CTS, 2022-2022 Cadillac CT4, 2008-2009 Chevrolet Captiva Sport
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
921-2109, 50228, IC-287, GN10494, 12590990, 12618542, 12632479, 12610626, 
...View more
item #1001L5QR
Show less
Spectra Premium C-939 Ignition Coil
Spectra PremiumPart # C-939
Spectra Premium C-939 Ignition Coil
52 Reviews
$118.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2016 Buick Encore, 2017-2018 Buick Encore, 2017-2018 Buick Encore, 2017-2018 Buick Encore, 2017-2018 Buick Encore, 2019-2019 Buick Encore, 2019-2019 Buick Encore, 2019-2019 Buick Encore, 2016-2019 Chevrolet Volt, 2016-2020 Chevrolet Malibu, 2017-2019 Chevrolet Cruze, 2018-2020 Chevrolet Equinox, 2021-2022 Chevrolet Malibu, 2021-2024 Chevrolet Equinox, 2023-2023 Chevrolet Malibu, 2018-2020 GMC Terrain, 2021-2021 GMC Terrain, 2022-2024 GMC Terrain
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
C-939, U5331, UF802, 171145, CE224, 3312457019830533, 3312457019830532, GN10797, 
...View more
item #1000Z63T
Show less
Walker Products 921-2318 Ignition Coil
Walker ProductsPart # 921-2318
Walker Products 921-2318 Ignition Coil
4.226 Reviews
$45.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2019 Buick Encore, 2017-2018 Buick Encore, 2017-2018 Buick Encore, 2017-2019 Buick Encore, 2019-2019 Buick Encore, 2016-2016 Chevrolet Cruze, 2016-2016 Chevrolet Cruze, 2016-2016 Chevrolet Cruze, 2016-2016 Chevrolet Cruze, 2016-2019 Chevrolet Volt, 2016-2020 Chevrolet Malibu, 2017-2019 Chevrolet Cruze, 2018-2020 Chevrolet Equinox, 2018-2020 GMC Terrain
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
921-2318, 1208117, UF802, 12635672, 12670053, 12697989, 12698064, 12176
item #1001L1AU
Show less
Walker Products 921-2204 Ignition Coil
Walker ProductsPart # 921-2204
Walker Products 921-2204 Ignition Coil
4.226 Reviews
$61.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2014-2017 Buick Regal, 2016-2020 Buick Envision, 2018-2019 Buick LaCrosse, 2018-2020 Buick Regal Sportback, 2018-2020 Buick Regal TourX, 2013-2016 Cadillac ATS, 2013-2019 Cadillac ATS, 2014-2019 Cadillac CTS, 2016-2018 Cadillac CT6, 2013-2014 Chevrolet Malibu, 2013-2014 Chevrolet Malibu, 2014-2019 Chevrolet Impala, 2015-2015 Chevrolet Malibu, 2015-2022 Chevrolet Colorado, 2016-2016 Chevrolet Malibu Limited, 2016-2022 Chevrolet Camaro, 2016-2022 Chevrolet Malibu, 2018-2019 Chevrolet Traverse, 2018-2020 Chevrolet Equinox, 2019-2021 Chevrolet Blazer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
921-2204, C1827, 1208114, GN10682, UF-680, 12652405, 12654078, 25202791, 
...View more
item #1001L461
Show less
Walker Products 921-2090 Ignition Coil
Walker ProductsPart # 921-2090
Walker Products 921-2090 Ignition Coil
4.226 Reviews
$37.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2010-2016 Buick LaCrosse, 2011-2013 Buick Regal, 2012-2017 Buick Verano, 2014-2017 Buick Regal, 2006-2006 Chevrolet HHR, 2006-2007 Chevrolet Cobalt, 2007-2007 Chevrolet Cobalt, 2007-2008 Chevrolet Malibu, 2007-2011 Chevrolet HHR, 2008-2010 Chevrolet Cobalt, 2008-2014 Chevrolet Malibu, 2010-2017 Chevrolet Equinox, 2012-2015 Chevrolet Captiva Sport, 2013-2013 Chevrolet Orlando, 2014-2014 Chevrolet Impala, 2010-2017 GMC Terrain, 2006-2009 Pontiac Solstice, 2006-2010 Pontiac G6, 2007-2010 Pontiac G5, 2011-2011 Saab 9-5
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
921-2090, 50081, 1208089, GN10458, GN10485, 12578224, 12589623, 12629646, 
...View more
item #1001L6P4
Show less
Spectra Premium C-706 Ignition Coil
Spectra PremiumPart # C-706
Spectra Premium C-706 Ignition Coil
52 Reviews
$44.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2011-2013 Buick Regal, 2012-2017 Buick Verano, 2014-2017 Buick Regal, 2015-2016 Buick LaCrosse, 2006-2006 Chevrolet HHR, 2006-2007 Chevrolet Cobalt, 2007-2007 Chevrolet Cobalt, 2007-2008 Chevrolet Malibu, 2007-2011 Chevrolet HHR, 2008-2010 Chevrolet Cobalt, 2008-2014 Chevrolet Malibu, 2008-2015 Chevrolet Captiva Sport, 2010-2017 Chevrolet Equinox, 2012-2014 Chevrolet Orlando, 2010-2017 GMC Terrain, 2005-2006 Pontiac G4, 2006-2009 Pontiac Solstice, 2006-2010 Pontiac G6, 2007-2010 Pontiac G5, 2011-2011 Saab 9-5
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
C-706, CUF491, UF491, UF645, UF491T, D516C, D522C, 50081, 
...View more
item #1000Z3KD
Show less
ÜRO Parts GM1319618 Ignition Coil
ÜRO PartsPart # GM1319618
ÜRO Parts GM1319618 Ignition Coil
4.629 Reviews
$41.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2019 Buick Encore, 2021-2022 Buick Encore, 2016-2016 Chevrolet Cruze, 2016-2019 Chevrolet Volt, 2016-2022 Chevrolet Malibu, 2017-2019 Chevrolet Cruze, 2018-2020 Chevrolet Equinox, 2021-2022 Chevrolet Trax, 2021-2023 Chevrolet Equinox, 2023-2024 Chevrolet Malibu, 2018-2020 GMC Terrain, 2021-2023 GMC Terrain
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
GM1319618, 25203537, 12635672, 12670053, 12697989, GN10797, IGC0192, 2IGC0572, 
...View more
item #1000ZKEK
Show less
Direct Ignition Coil - Denso 673-7204
DensoPart # 673-7204
Direct Ignition Coil - Denso 673-7204
4.523 Reviews
$61.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2010-2016 Buick LaCrosse, 2011-2013 Buick Regal, 2012-2017 Buick Verano, 2014-2017 Buick Regal, 2006-2006 Chevrolet HHR, 2006-2007 Chevrolet Cobalt, 2007-2007 Chevrolet Cobalt, 2007-2008 Chevrolet Malibu, 2007-2011 Chevrolet HHR, 2008-2010 Chevrolet Cobalt, 2008-2014 Chevrolet Malibu, 2010-2017 Chevrolet Equinox, 2012-2015 Chevrolet Captiva Sport, 2014-2014 Chevrolet Impala, 2010-2017 GMC Terrain, 2006-2009 Pontiac Solstice, 2007-2009 Pontiac G5, 2007-2010 Pontiac G6, 2011-2011 Saab 9-5, 2006-2007 Saturn Ion
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
ColorBlack
Part interchange
673-7204, C-706, IC571, 48973, U5180, D522C, 12638824, 12578224, 
...View more
item #1002HANN
Show less
Direct Ignition Coil - Denso 673-7303
DensoPart # 673-7303
Direct Ignition Coil - Denso 673-7303
4.523 Reviews
$69.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 Buick Enclave, 2010-2010 Buick LaCrosse, 2010-2016 Buick LaCrosse, 2010-2023 Buick Enclave, 2007-2009 Cadillac SRX, 2008-2008 Cadillac CTS, 2009-2015 Cadillac CTS, 2010-2010 Cadillac STS, 2010-2014 Cadillac CTS, 2010-2016 Cadillac SRX, 2011-2011 Cadillac STS, 2013-2015 Cadillac ATS, 2013-2019 Cadillac XTS, 2016-2016 Cadillac CTS, 2016-2019 Cadillac ATS, 2016-2019 Cadillac CTS, 2017-2019 Cadillac CTS, 2022-2023 Cadillac CT4, 2008-2009 Chevrolet Equinox, 2008-2012 Chevrolet Malibu
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
ColorGrey
Part interchange
673-7303, C-761, IC649, U5130, 49018, 33400-78J03, 33400-78J00, 33400-78J01, 
...View more
item #1002HKEG
Show less
4 pc Ignition Coil for 2010-2017 GMC Terrain | Aisin ESCGM-00116
AisinPart # ESCGM-00116
4 pc Ignition Coil for 2010-2017 GMC Terrain | Aisin ESCGM-00116
4.6550 Reviews
$99.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity4
Item LocatedUnited States
Part interchange
12578224, 12578244, 12589623, 12629646, 12638824
ConditionNew
item #1018A3C4
Show less
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium IC0024
A-Premium®Part # IC0024
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium IC0024
4.6550 Reviews
$88.99
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity6
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1012QHR5
Show less
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1228
A-Premium®Part # APIC1228
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1228
4.6550 Reviews
$123.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity6
Item LocatedUnited States
ColorYellow
Part interchange
12590990, 12610626, 12618542, 12632479, 15782683, 3340078J00, 3340078J01, 3340078J02, 
...View more
item #10139Z3U
Show less
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1222
A-Premium®Part # APIC1222
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1222
4.6550 Reviews
$89.99
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity6
Item LocatedUnited States
ColorRed
Part interchange
12590990, 12610626, 12618542, 12632479, 15782683, 3340078J00, 3340078J01, 3340078J02, 
...View more
item #10139TE0
Show less
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | Aisin ESCAZ-00106
AisinPart # ESCAZ-00106
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | Aisin ESCAZ-00106
4.6550 Reviews
$145.99
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity6
Item LocatedUnited States
Part interchange
12590990, 12610626, 12618542, 12632479
ConditionNew
item #10187AKQ
Show less
4 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC0048
A-Premium®Part # APIC0048
4 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC0048
4.6550 Reviews
$56.99
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity4
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #100014DD
Show less
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1172
A-Premium®Part # APIC1172
6 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium APIC1172
4.6550 Reviews
$100.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity6
Item LocatedUnited States
ColorBlue
Part interchange
12590990, 12610626, 12618542, 12632479, 15782683, 3340078J00, 3340078J01, 3340078J02, 
...View more
item #10139SYG
Show less
1 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | Aisin ESCAZ-00105
AisinPart # ESCAZ-00105
1 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | Aisin ESCAZ-00105
4.6550 Reviews
$32.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Part interchange
12590990, 12610626, 12618542, 12632479
ConditionNew
item #10187702
Show less
4 pc Ignition Coil for 2018-2023 GMC Terrain | Aisin ESCGM-00108
AisinPart # ESCGM-00108
4 pc Ignition Coil for 2018-2023 GMC Terrain | Aisin ESCGM-00108
4.6550 Reviews
$99.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2018 2019 2020 2021 2022 2023
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity4
Item LocatedUnited States
Part interchange
12635672, 12670053, 12697989, 12698064, 25203537
ConditionNew
item #1018A357
Show less
1 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium IC0023
A-Premium®Part # IC0023
1 pc Ignition Coil for 2010-2017 GMC Terrain | 4-Blade Terminal | A-Premium IC0023
4.6550 Reviews
$21.99
Edit ZIP code
3-year warranty
90 days free return
Fits GMC Terrain: 2010 2011 2012 2013 2014 2015 2016 2017
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC Terrain
Quantity1
Item LocatedUnited States
Installation PositionFront Side
ColorBlack
item #1012QD33
Show less
Page 1 of 2

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.