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Coil Boots & Coil-On-Plug Boots GM OE | ACDelco

An ACDelco GM Original Equipment Direct Ignition Coil-on-Plug Boot offers efficient and durable performance and is a GM-recommended replacement for your vehicle’s original components. Created from high-temperature resistant materials to protect from thermal overload and rough under-hood conditions. This Original Equipment Direct Ignition Coil-on-Plug Boot is manufactured to fit your specific GM vehicle and will provide the same performance, durability and service life you expect from General Motors.


  • One-piece molded rubber design for efficient protection against moisture
  • Neodymium in the core creates the strongest magnetic field and produces maximum high-voltage output at all speeds
  • One-piece molded rubber design and dielectric epoxy injection into the case eliminate air pockets, prevent moisture intrusion and thermal breakdown
  • Robust bobbins prevent voltage flash-over for extended life and service
  • High-temperature resistant materials has greater protection from thermal overload and meet SAE J2031 Class E
  • No plastic clips for durability

Signs of Wear & Troubleshooting:

Signs that you might need to replace your 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.
  • Terminal Installation:
    • Step 1: Align the terminal and pull the wire from the back of the connector in order to seat the terminal.
    • Step 2: If necessary, cut the new wire to proper length and splice with existing circuit.
    • Step 3: If the connector is outside of the passenger compartment, apply dielectric grease to the connector
    • Step 4: Install the TPA, CPA and/or the secondary locks.


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

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