Glow Plug Glow plug heating the combustion chamber to improve cold starting in diesel engines NPS "U571L34" - Not availableMERCEDES-BENZ - T1, 124, Kombi; FIAT - Ducato; BMW - 3, 5; PEUGEOT - J5; OPEL - Omega; RENAULT - 21; ROVER - 800; ...