410-308、410-308-B What is the difference between the two part numbers?

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410-308、410-308-B What is the difference between the two part numbers?

Hello xiazengshuai-sz,

I do not see a specific callout for the B suffix.

The main difference that I see, is 410-308 is obsolete, and is no longer manufactured.

410-308-B is listed as the direct substitute, and is an active part, that is currently being manufactured.