Spark plugs are only found in petrol engines. Their purpose is to ignite the air/fuel mixture in the combustion chamber to start the engine. To ignite the mixture, the plugs let off a little spark which allows the air/fuel mixture to explode. For that spark, the plugs are powered by the HT leads.

Spark plugsare constantly subjected to rather extreme temperatures (varying from -50°C to plus 1000°C) and high voltage current up to 30 000V. All this causes your spark plugs to wear. They will therefore regularly need replacing; every 12 500 to 30 000 miles. Fortunately, spark plugs are not very expensive. Prices vary between £ 2.20 and £20. To determine which spark plugs you need for your Opel, please select the model and engine type of your car into the menu.

Thread Size	M14x1,25
Thread Length [mm]	19
Spanner Size	16
Electrode Gap [mm]	0,9
Number of Poles	1

Thread Size	M14x1,25
Thread Length [mm]	19
Spanner Size	16
Electrode Gap [mm]	1
Number of Poles	4

Thread Size	M14x1,25
Thread Length [mm]	19
Spanner Size	16
Electrode Gap [mm]	0,9
Number of Poles	1

Thread Size	M14x1,25
Thread Length [mm]	25
Spanner Size	16
Electrode Gap [mm]	1
Number of Poles	4

Thread Size	M14x1,25
Thread Length [mm]	19
Spanner Size	16
Electrode Gap [mm]	0,8
Number of Poles	1

Spark Plugs Opel

Maintenance advice for Opel

Spark Plugs by model of Opel

Thread Length [mm]	19
Spanner Size	20,8
Electrode Gap [mm]	0,8
Number of Poles	1