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Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
That's a check valve, not a "fitting". Not sure myself of the part #, but Tuned is very knowledgeable and reliable about that sort of thing, so I'd be inclined to take his word, no matter what kind of part it is.