Spanner Size: 18 mm; Thread Size: M12 x 1,25; Thread Length [mm]: 19,0; Spark Plug: Connector Type M4, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat; Spark Position [mm]: 1,6; Electrode Gap [mm]: 0,7; LANCIA: THEMA (834); 12122343144, 2343144, 9806958717, 980695871701, 920701011, E920701011, J4520X24ESU, 9009824465, 12122343144, 2343144, 0948200144, 0948200145, 9009824465, 9470000157, 9470100157, 9470300157, 9470300181; Engine spark plug,Spark plugs