Upgrade the ignition system of your Vauxhall with these NGK Y-534J (5540) X4 Glowplugs. Made by a trusted brand in the industry, these units are designed to provide reliable and efficient performance. Specifically intended as replacement parts, these spark plugs are guaranteed to fit seamlessly into your vehicle's ignition system. These a new never been fitted or used old stock , only one box some have slight surface corrosion will easily clean up. Ive also tested with a multimeter and tested fine (SEE PHOTOS FOR CONDITION) Any other questions please ask