Resistance matched to OE Autolite 1116 Glow Plug · Description. Made to OE specifications. Resists corrosion and vibration. Fast startup. · Product Specifications. Shell; Thread Diameter... Diesel engines depend on high heat in the combustion chamber to ignite the fuel, and when you cold start a diesel engine, there isn't enough heat to get it going. Autolite (4 Pack) Genuine Small Engine Copper Core Spark Plugs - 3926 Diesel Engine Glow Plug Replacement Autolite 1116 Automotive Replacement Glow Plug For 1996 Cold Start Glow Plugs As America’s best-selling glow plugs, Autolite Glow Plugs fit a variety of diesel applications for long-lasting performance and dependability. Autolite Diesel Glow Plug 1116 - The Home Depot If you're experiencing problems starting your diesel engine, it may have burnt out glow plugs. When you turn the ignition switch, the glow plug warms the combustion chamber to start the fuel ignition.