Spark Plugs for 500s

There are many spark plug manufactures around and all have different codes for their spark plugs, please see below a list of the most common ones for standard fitment 500 original engine (479cc & 499cc): Original plugs Marelli CW 225 N or Marelli 6N; Champion L7 or Champion L 87 Y Alternatives NGK BP6HS or NGK BPR6HS; Bosch W7BC or Bosch WR7BC; Unipart GSP541 126 650cc engines  Original plugs Marelli CW 8 NP; Champion L81 Y Alternatives NGK BP7HS; Bosch W5BC Continue reading Spark Plugs for 500s