What is the size of opel corsa 1.6i welch plug?

The Opel Corsa 1.6i typically uses a spark plug with a thread diameter of 14 mm and a reach of about 19 mm. The specific plug model may vary based on the engine variant and year of manufacture, so it’s essential to consult the vehicle's manual or a parts database for the exact specifications. Generally, the heat range and gap size may also differ, so checking those details is important for optimal performance.