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.


  • Comes as a SET of 3
  • Brand New
  • Replaces dealer part numbers: 1L8Z 12029 AB, 6E5Z 12029 BA, 1L8Z12029AB, 6E5Z12029BA, 1L8U 12A366 AA, 1L8U AA, 1L8U12A366AA, 1L8UAA, AJ0318100, AJ0318100A, AJ0318100B, AJC118100, DG480, DG486, 1L8Z-12029-AA, 1L8Z12029AA
  • Built to strict quality control standard
  • Direct replacement
  • 100% factory tested

Returns Note:

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

Guaranteed to fit and function properly for your specific application.

Optimum Performance

Meets or exceeds requirements of the vehicle. Provides the correct primary and secondary resistance, voltage output, and spark energy needed to restore original operating condition.

Premium Quality

Manufactured with quality materials to meet highest quality control standards in the industry.

Part Details

  • Quantity: 3 Piece Set

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.

4.4 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Ignition coil
Wok out great fix our car and I so far am very pleased with A 1 auto parts good prices and fast shiping , thank you and I'll be buying parts again when needed
March 26, 2018
5 months ago
Ignition coils
Coils works great I get all my car parts from 1A Auto
March 25, 2018
5 months ago
Don't buy from these losers. They won't stop sending you junk mail. Even though you repeatedly ask them not to. Take my advice. Pay more somewhere else
March 23, 2018
5 months ago
Response from 1A Auto
Hello, I run the Emails here at 1A. I'm sorry for the issue you had where you continued to receive Emails after unsubscribing. I just went in the system and double checked that you are 100% removed from ALL of our Email Lists. We apologize again for the inconvenience and hope you have a nice weekend.
March 23, 2018
Ian P Staff
ignition coils
parts arrived on time,perfect fit ,and car runs good.
I am very happy so far .I hope they last long time in service.
March 13, 2018
5 months ago
Ignition Coil - 1AERK00231
Customer Service was very friendly when taking my order. The coils were delivered within a week, and were in excellent condition. I highly recommend this company!
February 19, 2018
6 months ago
Perfect fit, works as advertised
Went right in and functioned properly... about 20,000 miles on them with no issues. Good product.
April 23, 2017
over 3 years ago
Great Prices Great Place to Buy
I have been looking for these for a few weeks seeing. them all priced min 80.00 each and more, then found it priced here and order thinking something is up. Got them quick, installed and ca runs so much better since installing. Thank you
March 9, 2017
1 year ago
Ignition Coil
2005 Ford Escort v6, purchased at 159,000 miles for beater car. No codes but it shuddered at highway speed especially pulling slight grades. First I replaced three coils in the back and it improved enough that I went ahead and replaced them all a month later. Most of the old ones looked to be the originals. I was satisfied changing them made a difference. I also ran one quart of automatic transmission fluid through a full tank of gas. In the first 15 miles it improved some, so that was worthwhile. After replacing the last three coils I ran an other quart through, it made a slight difference, so it was worthwhile. The engine still has a slight shudder. I also power flushed the transmission for the first time and it smoothed out some. 17 mpg is the best it gets. The new coils definitely helped. For an old car I like it, the mileage sucks. I remember my 1970 Toyota Corolla getting 32 mph running it through the woods like a dune buggy. Just could not kill it.
February 15, 2017
1 year ago
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Browse 1 question Browse 1 question and 1 answer
Are these any good? Don't want to buy garbage cheap stuff
Lindsey H on Jul 17, 2016
BEST ANSWER: These will come with a lifetime warranty, and we do stand behind our parts!

Vehicle Fit

  • 2001-2008 Ford Escape Ignition Coil 3 Piece Set V6 3.0L
  • 2005-2007 Ford Five Hundred Ignition Coil 3 Piece Set V6 3.0L
  • 2005-2007 Ford Freestyle Ignition Coil 3 Piece Set V6 3.0L
  • 2000 Ford Taurus Ignition Coil 3 Piece Set V6 3.0L DOHC (8th Vin Digit S)
  • 2004 Ford Taurus Ignition Coil 3 Piece Set V6 3.0L DOHC (8th Vin Digit S)
  • 2001-2006 Mazda Tribute Ignition Coil 3 Piece Set V6 3.0L
  • 2008 Mazda Tribute Ignition Coil 3 Piece Set V6 3.0L
  • 2005-2008 Mercury Mariner Ignition Coil 3 Piece Set V6 3.0L
  • 2005-2007 Mercury Montego Ignition Coil 3 Piece Set V6 3.0L
  • 2000 Mercury Sable Ignition Coil 3 Piece Set V6 3.0L DOHC (8th Vin Digit S)
  • 2004 Mercury Sable Ignition Coil 3 Piece Set V6 3.0L DOHC (8th Vin Digit S)
Part #: 1AERK00231

Order must be placed by 4pm ET