Fr78X 4 X Bosch Super 4 Spark Plugs - China Spark Plug, Spark Plugs | Made-in-China.com
Changing sparks to bosch super 4 for golf mk 4 BCB but lengths of spark plug are different. Should this be a major concern. Seller was adament these plugs were compatible. : r/MechanicAdvice
Bosch Spark Plug - 14mm - 3/4 inch Reach - Small Engine Plug - WR8DC