Design Engineering Vapor Block 3/8″ I.D. x 36″ Fuel Line Sleeve – Heat-Resistant Fuel Line Protector, Anti-Vapor Lock Insulation, Thermal Shield for Automotive and Marine Applications
Price: $16.99 - $15.99
(as of Aug 10, 2025 20:02:38 UTC – Details)
Design Engineering Vapor Block is specifically engineered to prevent vapor lock caused by extreme heat in fuel and fluid lines, a common problem that leads to rough idling and difficult engine starting. By significantly reducing heat transfer to the fuel line, Vapor Block keeps fuel cooler and below its boiling point, ensuring consistent engine performance. This fuel line sleeve features a convenient split design with an adhesive flap, allowing for quick, tool-free installation without the need to disconnect or remove the fuel line. Simply wrap Vapor Block around the fuel line, peel off the adhesive liner, and press the flap securely in place. Constructed from durable glass fiber and polyester, laminated with a reflective aluminum outer layer, Vapor Block provides excellent, long-lasting thermal protection. It effectively shields fuel lines from radiant heat, helping to avoid costly repairs or modifications due to vapor lock. This lightweight, reusable sleeve is ideal for automotive, marine, and industrial applications where managing heat is critical to reliable engine operation.
Fit type: Universal Fit
Installs easily with a split design and adhesive flap no need to disconnect the fuel line
Can be used on any cable, hose or line for added heat protection
Made of glass fiber and polyester laminated to an aluminum outer layer
Customers say
Customers find the fuel line sleeve easy to install and appreciate its insulation properties, noting it provides good heat protection. However, the adhesive quality receives mixed feedback, with several customers describing it as horrible.
