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The Russell 5/16" barbed fuel check valve provides one-way flow to prevent fuel from siphoning back toward the tank, improving starts on carbureted systems. Black anodized and barbed for secure hose connection, this valve fits 5/16" hose and operates reliably in fuel systems between 3 and 10 psi. It’s not compatible with E85 or methanol fuels.
Russell 5/16 Male To 5/16 Male Barbed Fuel Check Valve - Black Anodized
