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My fuel filter didn't come with replacement o rings for the control valve. I believe one is black and one is blue.

Does anyone know if it matters what kind of o rings go on there, (if the o rings are colour coded do they need to be different materials??)

Any info on which o rings to get would be useful!

thanks

You'll need the appropriate O rings

Can you post a picture of the part it goes into? I'll see if they are available separately