What spark plug do I need for my CB350 / CL350 / SL350? Common Motor December 17, 2018 02:37 Follow B8ES (NGK) http://www.common-motor.com/honda-spark-plug-ngk Related articles What is the spark plug gap for the CB350 / CL350 / SL350? How often do I need to replace the ignition points on my CB350 / CL350 / SL350? What type of fork oil and how much fork oil should I use in my CB350 / CL350 / SL350? Honda CB350 Loose Emulsifier Tubes in Carburetor Rebuild Kit Honda CB350 Carburetor Identification Guide Comments 0 comments Please sign in to leave a comment.