Design Engineering Vapor Block sleeve shields a fuel line with thermal protection.
Design Engineering Vapor Block split design enables tool-free installation on vehicles.
Design Engineering Vapor Block adhesive flap secures the wrap quickly.
Design Engineering Vapor Block glass fiber with aluminum outer layer for durable heat shielding.
Design Engineering Vapor Block 36in sleeve reduces heat transfer to fuel lines.
Design Engineering Vapor Block sleeve shields a fuel line with thermal protection.
Design Engineering Vapor Block split design enables tool-free installation on vehicles.
Design Engineering Vapor Block adhesive flap secures the wrap quickly.
Design Engineering Vapor Block glass fiber with aluminum outer layer for durable heat shielding.
Design Engineering Vapor Block 36in sleeve reduces heat transfer to fuel lines.

Design Engineering Vapor Block 5/8in I.D. x 36in Fuel Line Sleeve – Heat-Resistant Protector

Overview Design Engineering Vapor Block is engineered to prevent vapor lock caused by extreme heat in fuel...
Vendor: Design Engineering
Availability: In stock
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Design Engineering Vapor Block sleeve shields a fuel line with thermal protection.

Design Engineering Vapor Block 5/8in I.D. x 36in Fuel Line Sleeve – Heat-Resistant Protector

£34.57
Design Engineering Vapor Block sleeve shields a fuel line with thermal protection.
Design Engineering Vapor Block split design enables tool-free installation on vehicles.
Design Engineering Vapor Block adhesive flap secures the wrap quickly.
Design Engineering Vapor Block glass fiber with aluminum outer layer for durable heat shielding.
Design Engineering Vapor Block 36in sleeve reduces heat transfer to fuel lines.

Design Engineering Vapor Block 5/8in I.D. x 36in Fuel Line Sleeve – Heat-Resistant Protector

£34.57
Description
Description
x

Overview

Design Engineering Vapor Block is engineered to prevent vapor lock caused by extreme heat in fuel and fluid lines. By significantly reducing heat transfer to the line, Vapor Block keeps fuel cooler and below its boiling point, supporting more consistent engine operation across a range of conditions. The result is a lightweight, reusable sleeve designed for automotive, marine, and industrial environments where heat management matters.

Key benefits at a glance

  • Split design with adhesive flap enables tool-free installation without disconnecting the lines
  • Universal fit for any cable, hose, or line needing extra heat protection
  • Durable construction from glass fiber and polyester laminated to an aluminum outer layer
  • Lightweight and reusable sleeve suitable for automotive, marine, and industrial use

How it works

The reflective aluminum exterior works with the internal layers to shield radiant heat while the glass fiber and polyester blend minimizes heat transfer to the line. This combination helps keep the temperature along the fuel path more stable in demanding environments.

Installation tips

  • Wrap Vapor Block around the fuel line
  • Peel off the adhesive liner
  • Press the flap to secure and seal

Real-world use cases

In hot engine bays, on boats with exposed fuel lines, or in industrial settings with heated fluids, the sleeve can contribute to smoother starts and steadier idling by limiting heat exposure to critical lines.

Materials and durability

Made from glass fiber and polyester with a radiant aluminum outer layer, Vapor Block delivers long-lasting thermal protection without adding significant weight or bulk to the line.

FAQ

Q: What surfaces can Vapor Block be installed on?

A: Vapor Block fits most cables, hoses, and lines and installs without disconnecting the fuel line.

Q: What benefits might I expect in hot conditions?

A: It reduces radiant heat transfer to fuel lines, helping maintain cooler temperatures and potentially less vapor lock.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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