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ACDelco Ignition System

Experts reach for ACDelco Ignition System parts. That’s because they’ve earned a reputation in the marketplace as quality aftermarket replacement parts.

ACDelco Ignition System parts are put through a variety of tests, often under extreme or unusual conditions, to help deliver the quality parts you expect from ACDelco. As an added benefit, ACDelco also offers a 12-month/12,000-mile, whichever comes first, limited warranty* on all ACDelco Ignition parts.

*To the original retail purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco parts for details.

Ignition System Parts

  • ACDelco Ignition and Switch parts are known for quality, performance, durability, and dependability.
  • ACDelco has comprehensive ignition system coverage for most vehicles on the road today.
  • Quality ignition system parts help keep your engine performing the way it was designed.

Distributor Caps/Rotors

  • ACDelco Caps have metal inserts designed to provide the best possible fit and ensure maximum conductivity between the distributor towers and spark plug wires.
  • Markings or locator keys included on ACDelco Caps are similar to OE, allowing for ease of installation.
  • Vent caps included on select ACDelco Distributor Caps are similar in design to OE and help protect the interior from contamination and direct entry of water.
  • Full-size center contact helps deliver maximum conductivity.
  • Full anti-arc barrier helps reduce the possibility of secondary voltage arcs that can cause an engine to misfire.

Ignition Modules

  • Many ACDelco Ignition Modules feature electronically welded lead connections to help eliminate heat-stress failure or cold joints.
  • Many ACDelco Ignition Modules feature laser trimming, which helps provide precise values and eliminate deterioration and damage.

Ignition Coils

  • It is critical that the steel plates surrounding the coil correctly match the original part size and number of plates, because the number and shape of the laminations determine the output characteristics of the coil; that is why ACDelco uses laminations similar to the OE part.
  • To protect coils from the harsh operating environment, laminations are corrosion-protected, and primary and secondary coil windings often feature molded plastic protection.
  • Failure or poor performance from a coil can result in a misfire; a rough-running, hard-starting engine; and excessive emissions. ACDelco Ignition Coils provide the performance needed to help keep vehicles running the way they were designed.

Voltage Regulators

  • Control the field current of the rotor in order to limit system voltage while switching the current on and off at a specified rate to perform the following functions:
    • Radio noise control
    • Develop the electrical current needed for proper system voltage
  • Provide proper fit, form, and function to help your vehicle run the way it was designed.

Sensors/Relays/Switches

  • Sensors and relays work with vehicle electronics to help optimize engine performance.
  • ACDelco offers a variety of switches, including door lock, turn signal, ignition, trunk, and windshield wiper, for most vehicles on the road today.