Glow Plug - Hilander 4JA1 | 4JB1CIRCUIT-CPI-49 (8-94175158-0) GLOW PLUG ₱750.00 Regular Price₱532.50Sale PriceQuantity*Add to CartPRODUCT INFOA glow plug facilitates the starting of the diesel engine when it is cold by glowing in a combustion chamber within the engine. It is also called a heater plug.