Professional Glow Spark Plugs



Specially designed to give diesel engines the heat they need for cold starts, these ACDelco Professional Glow Spark Plugs will maintain ignition in all cylinders, improving throttle response and reducing exhaust emissions. For dependability and long-lasting performance, use ACDelco Professional Glow Spark Plugs.

Product Facts

FUNCTION: 
A high-voltage spark from the ignition coil ignites the air/fuel mixture inside the engine’s cylinders. 

SIGNS OF WEAR: 
Poor starting characteristics, decreased fuel economy, sluggish engine performance, excessive foiling or deposits on plug. 

WHAT IT DOES: 
The starting and charging system starts the engine, maintains the battery’s charge and provides power to the electrical accessories while the engine is running.