Spark Plugs

Flexolite supply an extensive range of over 110 Champion and NGK spark plugs that cover over 2000 vintage and classic vehicle model applications from over 130 vehicle marques. Our application database presents a choice of Champion or NGK plugs where available for your vehicle as well as advising the recommended plug gap for each make of plug. The data was assembled from Champion and NGK texts of the period, so be sure to check any recommendation made below against vehicle manufacturers' information and inspection of previously fitted plugs. Please search by vehicle details, Champion or NGK part number or by Vehicle Make and Model/Year.

Where direct equivalent products are no longer available for some older plugs and applications, Flexolite list the modern equivalent and note whether the available plug may require an 18mm to 14mm thread insert for example. We have also recorded original Champion plug numbers against selected applications and relevant later plug numbers, to aid identification of a suitable alternative when part numbers have been superseded. Further information on Champion and NGK's part numbering systems, plug selection, cross reference, heat ranges and spark plug condition - please open the HELP & INSTRUCTIONS section below.