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 Coil Over Plug Ignition Coil features the following specifications:

  • Comes as a SET:
    • Includes Six (6) Coils
  • Brand New
  • Replaces dealer part number: 88958974
  • Built to strict quality control standard
  • Direct replacement
  • 100% factory tested

These coils are for a distributorless application. Sold as a SET of SIX. Please see our other listing if a single coil is needed.


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.

  1. step : Removing the Air Intake Box (0:57)
    • Remove the two 8mm bolts holding the top of the air box
    • Remove the two hose clamps with a flat blade screwdriver
    • Twist and remove the two vacuum lines
    • Pull the air intake box up and out
    • Twist the air intake hose collar off
  2. step : Removing the Ignition Coil (2:45)
    • Disconnect the locking tab with a flat blade screwdriver
    • Disconnect the ignition coil wiring harness
    • Remove the 10mm bolt from the engine coil
    • Pull the ignition coil up and out
  3. step : Installing the New Ignition Coil (3:59)
    • Insert the ignition coil into place
    • Insert and tighten the 10mm bolt
    • Connect the ignition coil wiring lead
    • Replace the locking pad
  4. step : Installing the Air Intake Box (5:01)
    • Twist the air intake hose collar into place
    • Insert the air intake box into place
    • Insert the two vacuum lines
    • Insert and tighten the two hose clamps with a flat blade screwdriver
    • Insert and tighten the two 8mm bolts holding the top of the air box

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 8mm Socket

4.9 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
My truck is running like a new truck! I have ordered parts from here more than once
January 28, 2017
1 year ago
Ignition coils
These coils are very similar to the factory originals. I was able to remove the old ones, change the plugs and install the new ones in just over an hour. I matched them with iridium plugs and my gas mileage increased by a couple miles per gallon. No sputtering when hitting the throttle, quick and easy start-up and backed by a very nice warranty. Overall, very happy with my purchase and look forward to not having to replace this part for many years to come. What more can I say, quality at an affordable price. Doing business the way it should be done. Great job A1 Auto.
April 24, 2017
1 year ago
Made my truck run brand new
I got these coils replaced in like 30 mins with common hand tools and now my truck runs brand new, the engine runs a lot smoother and my gas mileage is better. Also for only 119.95 and you get 6 coils!? That is a crazy good deal, I will definitely be buying more parts from here.
August 1, 2017
9 months ago
August 24, 2017
8 months ago
Fired Up !!
This is the best deal on the internet. These ignition coils are just like the originals. they fit perfect. also they have my chevy Trailblazer purinning like a kitten. Thanks 1A Auto. Qball901 from Memphis,TN.
January 29, 2018
3 months ago
Great Service
The coil pack for my 2004 GMC Envoy shipped on time, great product and it runs great again. I also enjoyed the videos they produce.
August 3, 2017
9 months ago
Great price for 6 coils. Installed without an issue and work perfectly. Will be making more purchases from 1A Auto in the future.
March 16, 2018
1 month ago
Work real good took less a hour to install,solve half the problem ,no more misfiring,might have the timing checked,injectors ckeaned
March 12, 2018
2 months ago
This was a great purchase, parts all went in as they stated and the video made it easy to save the 300 dollars they wanted to put them in. I would highly recommend if you are handy that you try 1aauto for your next repair, shipping was free and parts came earlier than they said.
June 28, 2017
Great Purchase
My wifes car runs like it was new. I have recently started buying auto parts online and I don't know why I waited this long to do it. Thanks 1a auto.
February 5, 2018
2 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 6 answers
Who is the manufacturer?
Gary W on Aug 29, 2016
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.

Vehicle Fit

  • 2004-2005 Buick Rainier Ignition Coil 6 Piece Set L6 4.2L
  • 2002-2005 Chevy Trailblazer Ignition Coil 6 Piece Set L6 4.2L
  • 2002-2005 Chevy Trailblazer EXT Ignition Coil L6 4.2L 6 Piece Set
  • 2002-2005 GMC Envoy Ignition Coil 6 Piece Set L6 4.2L
  • 2002-2005 GMC Envoy XL Ignition Coil L6 4.2L 6 Piece Set
  • 2004-2005 GMC Envoy XUV Ignition Coil L6 4.2L 6 Piece Set
  • 2003-2005 Isuzu Ascender Ignition Coil 6 Piece Set L6 4.2L
  • 2008 Isuzu Ascender Ignition Coil 6 Piece Set L6 4.2L
  • 2002-2004 Olds Bravada Ignition Coil 6 Piece Set L6 4.2L
  • 2005 Saab 9-7X Ignition Coil 6 Piece Set L6 4.2L
Part #: 1AERK00112

How-to Video:

(07:32 min)