The Design Engineering vapor block fuel line sleeve has been specially developed to prevent vapor lock in fuel systems by reducing the heat and keeping the fuel cooler and below boiling point. It is a simple and easy solution to prevent vapor lock which causes rough idling and difficult starting which is common on early carburettor model vehicles. The sleeve wraps around the fuel line and and is secured by a adhesive securing flap.No need to disconnect fuel lines as the sleeve simply wraps around themCan be easily cut to the size to suit applicationA split sleeve design with an adhesive securing flapMade from glass fibre and polyester laminated to an aluminium outer layer that will provide long lasting thermal protection. The sleeve can be also used on any cables, hose for added heat protection.