"We have sold 19 of these in the last 6 months"

The spark plug cap is a component that covers and connects the spark plug to the ignition coil or spark plug wire. It ensures a secure electrical connection, allowing the ignition system to deliver a high-voltage spark to the spark plug. The cap is designed to withstand high temperatures and vibrations, providing a reliable seal to prevent moisture and debris from affecting the connection. Proper functioning of the spark plug cap is essential for efficient engine operation and reliable ignition performance.