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GM LS1 to 6AN Fuel Rail Conversion Fitting; This conversion fuel fitting allows you to easily change your fuel rail supply line's fitting from the factory quick disconnect style to a male 6AN design.

LSX -8 SAE O-Ring Fuel Rail Plug Fitting; This -8 SAE AN O-Ring fitting is designed to block off an un-used fuel rail end. If your FAST LSX fuel rail installation doesn't require an in-rail fuel pressure gauge, then use this plug to seal off the un-used rail end.