Champion RG4HCX - Vespa / Piaggio 50 / 150 / 250
NGK CR7EKB - OEM Piaggio 350cc - 500cc
NGK CR8EB - Vespa / Piaggio 50 / 150 / 250
NGK CR8EKB - OEM Piaggio / Vespa GTS 300 10-18
NGK ER9EH
NGK ER9EH-6N - OEM Piaggio / Vespa - 50 4V