Glow Plug Compatible With JD Equipment and Case Equipment - RE505867 A glow plug is a heating device used to help start diesel engines. In cold weather or when the diesel engine is cold, the air in the combustion chamber might not be hot enough to ignite the diesel fuel on its own. Glow plugs function to overcome this by heating the air in the combustion chamber, thereby facilitating the ignition of the diesel fuel. Product Features & Benefits Cold Start Improvement: Consistent starting of diesel engines in cold conditions by provide the necessary heat to ignite the diesel fuel. Emission Reduction: Glow plugs help in reducing the emission of unburned hydrocarbons. Engine Health: Proper functioning of glow plugs leads to consistent combustion which reduces engine strain and wear over time. Fuel Efficiency: Glow plugs improve the efficiency of fuel use during the start-up phase. A well-heated engine reaches its optimal operating condition faster. Smooth Engine Performance: Proper combustion eliminates rough idling and reduces engine noise.