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Professional Coil-On-Plug Boots | ACDelco

ACDelco Professional, premium aftermarket Direct Ignition Coil-on-Plug Boots seal snugly against the spark plug’s insulator, keeping moisture and contaminants out and promoting longer spark plug life. They are thoroughly engineered to meet or exceed your expectations for fit, form and function. ACDelco Professional Direct Ignition Coil-on-Plug Boots provide the performance and dependability you expect from ACDelco.


  • Weather-tight boot seal for protection against moisture intrusion
  • High-temperature resistant silicone for protection against thermal overload
  • Stainless-steel internal spring with resistor to suppress RFI and deliver maximum voltage to the spark plug
  • Premium, high-quality aftermarket spark plug boot


Signs of Wear & Troubleshooting:

Signs that you might need to replace your direct ignition coil-on-plug boot are:

  • Engine will not start or run
  • Reduced power
  • Excessive tailpipe emissions
  • Check Engine light is on
  • Engine misfire
  • Reduced fuel economy

Good Maintenance Practices:

Having your service technician regularly inspect your ignition system can help you stay away from conditions that may result in poor performance or reduced fuel economy.


Should I replace my direct ignition coil-on-plug boots when I replace my spark plugs or ignition coils?

  • Direct ignition coil-on plug boots should be changed as recommended in vehicle Owner’s Manual.
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