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.


  • Brand New Ignition Coil Set
  • Built to strict quality control standard
  • Direct replacement
  • 100% factory tested

NOTE: Some vehicles came with multiple versions of coils which do not interchange.  Please verify OE number prior to purchasing.


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.

5.0 / 5.0
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I called to order to make sure right parts. Courteous,helpful. super knowledgeable. 100% satisifed
May 6, 2018
1 month ago
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Vehicle Fit

  • 2004-2005 Cadillac Deville 1st Design Ignition Coil Pair
  • 2004-2005 Cadillac SRX Ignition Coil Pair V8 4.6L
  • 2005 Cadillac STS Ignition Coil Pair V8 4.6L
  • 2006 Cadillac STS Ignition Coil Pair V8 4.6L 1st Design
  • 2004 Cadillac Seville 1st Design Ignition Coil Pair
  • 2004-2005 Cadillac XLR Ignition Coil Pair V8 4.6L
  • 2004-2005 Pontiac Bonneville Ignition Coil Pair V8 4.6L

This part replaces:

  • OE # 12585765
  • OE # 89017778
Part #: 1AERK00287

Ships Same Day for orders placed by 4 P.M. ET