Glow Plug Glow plug heating the combustion chamber to improve cold starting in diesel engines MDR "BER-GN992" - Not availableOPEL - Astra G, Vectra B, Omega B, Zafira A, Frontera B; SAAB - 9-5, 9-3; ALPINA - D10; BMW - 7; VAUXHALL - Vectra, Astra