The ignition coil is a crucial part of your ignition system. It's function is to convert the 12 volt power of your vehicle's electrical system in to 35,000 or more volts. This produces a high intensity spark at the spark plug which then ignites the fuel in the cylinder. Coils in general will wear out over time. This will cause a misfire condition. In engines like this with one coil per cylinder you can diagnose a coil by putting a timing light on each one to make sure it is lighting the light consistently.

This Ignition Coil (SET of 8) features the following specifications:

  • Comes as a SET of 8
  • Brand New
  • Replaces dealer part numbers: 2W4Z 12029 B, 2W4Z12029B, AJ81373, AJ82545, AJ86468, XR827823, 1W4U12A366BA, 1W4U 12A366 BA, 1W4UBA, 2W4E12A366BB, 2W4EBB, XW4U12A366BB, XW4UBB, 1W4U BA, 2W4E 12A366 BB, 2W4E BB, XW4U 12A366 BB, XW4U BB
  • Built to strict quality control standards
  • Direct replacement
  • 100% factory tested

This coil set is for a distributorless application. Sold as a SET of 8. If you need a single coil, please see our other listings.


Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Direct Fit Replacement

Direct fit replacement part is guaranteed to fit and function properly for your specific application.

Optimum Performance

Optimal performance, TRQ ignition coils are designed to meet or exceed the requirements of the vehicle.  TRQ ignition coils provide the correct primary and secondary resistance, voltage output, and spark energy that the vehicle needs to restore to its original operating condition.

Premium Quality

Manufactured with quality components and materials by using advanced technology to meet the highest quality control standards in the industry.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

4.3 / 5.0
4 Reviews
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Ignition coils
I purchased the set of ignition coils from 1a Auto after checking prices online and locally. The product works great and I saved a ton of cash too!

Always great products and service from them!
February 26, 2018
over 3 years ago
{art were exactly what my car needed to get her up and going again, thank you
January 20, 2018
4 months ago
So far so good
Arrived on time, great value and so far after a month they are working fine.
June 23, 2017
1 year ago
Coils for 2002 t bird
Installed coils 6 mos ago car never ran better highly recommend this product
February 11, 2017
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 3 answers
What brand are coils?
Jesse E on May 22, 2017
BEST ANSWER: We have a few different aftermarket companies build these parts specifically for us, as our 1A Auto house brand. They are manufactured to the same OEM specifications as the original part that came with your vehicle. If you have any further questions, please don't hesitate to ask.
What is the warranty in months or years?
paul c on Jan 5, 2017
BEST ANSWER: We offer a limited lifetime warranty on these 8 ignition coils in the event you experience a failure during intended use caused by a manufacturer defect. The limitation is that the warranty is covered as long as you own the vehicle.

Vehicle Fit

  • 2002-2005 Ford Thunderbird V8 3.9L Ignition Coil 8 Piece Set
  • 2000-2002 Jaguar S-Type V8 4.0L Ignition Coil 8 Piece Set
  • 2003 Jaguar S-Type V8 4.2L with 2 Pin Style Connector Ignition Coil 8 Piece Set
  • 2000-2006 Lincoln LS V8 3.9L Ignition Coil 8 Piece Set
Part #: 1AERK00092

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