What is the spark plug gap for the CB450 / CL450 / CB500T? Common Motor December 17, 2018 05:13 Follow Gap specification: 0.7 - 0.8 mm (0.028 - 0.032 in.) Related articles What spark plug do I need for my CB450 / CL450 / CB500T? How do I return or exchange parts or items? How do I check my order status or track my package? How to Synchronize Carburetors Honda CB450 / CL450 / CB500T How do I rebuild a Honda CB450 / CL450 Carburetor? Comments 0 comments Please sign in to leave a comment.