---
product_id: 368211327
title: "Design Engineering Vapor Block Sleeve 3/8\" X 36\""
brand: "design engineering"
price: "€ 64.88"
currency: EUR
in_stock: true
reviews_count: 5
category: "Design Engineering"
url: https://www.desertcart.com.cy/products/368211327-design-engineering-vapor-block-sleeve-3-8-x-36
store_origin: CY
region: Cyprus
---

# Resists heat up to 340°F Tool-free split design for easy install Aluminum laminated for max heat reflection Design Engineering Vapor Block Sleeve 3/8" X 36"

**Brand:** design engineering
**Price:** € 64.88
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Cool, Drive Smooth — Vapor Block Your Fuel Line’s Best Defense!

## Quick Answers

- **What is this?** Design Engineering Vapor Block Sleeve 3/8" X 36" by design engineering
- **How much does it cost?** € 64.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/368211327-design-engineering-vapor-block-sleeve-3-8-x-36)

## Best For

- design engineering enthusiasts

## Why This Product

- Trusted design engineering brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Armor Against Heat:** Glass fiber and polyester core laminated with reflective aluminum
- • **Universal Fit for Any Ride:** Fits any cable, hose, or line with 3/8" x 36" dimensions
- • **Lightweight Yet Long-Lasting:** Reusable sleeve designed for automotive, marine, and industrial use
- • **Install in Seconds, No Tools Needed:** Split design with adhesive flap means no fuel line disconnection
- • **Keep Your Fuel Cool, Your Engine Cooler:** Prevents vapor lock by reducing heat transfer to fuel lines

## Overview

The Design Engineering Vapor Block Sleeve is a 36-inch, 3/8-inch ID universal-fit fuel line sleeve engineered to prevent vapor lock by reducing heat transfer. Constructed from glass fiber and polyester laminated with reflective aluminum, it resists direct heat up to 340°F. Its split design with adhesive flap allows quick, tool-free installation without disconnecting fuel lines, making it ideal for automotive, marine, and industrial applications requiring reliable heat protection.

## Description

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.

Review: Works great for insulating the fuel line between the carb and filter. A bit tricky to get it sealing well around tight bends but still doable.
Review: De muy buena calidad y protección.

## Features

- Specifically developed to prevent vapor lock in fuel systems by greatly reducing heat in the line to keep fuel cooler and below boiling
- Installs easily with a split design and adhesive flap no need to disconnect the fuel line
- Made of glass fiber and polyester laminated to an aluminum outer layer
- Can be used on any cable, hose or line for added heat protection
- Direct heat resistance to 340 F.Fit type: Universal Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QPZTBXV |
| ASIN  | B07QPZTBXV |
| Brand Name | Design Engineering |
| Color | Silver |
| Customer Reviews | 4.0 4.0 out of 5 stars (339) |
| Customer reviews | 4.0 4.0 out of 5 stars (339) |
| Date First Available  | 19 June 2019 |
| Department  | unisex-adult |
| Global Trade Identification Number | 00607078106711 |
| Included Components | 36" x 3/8" ID Vapor Block Fuel Line Sleeve |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions L x W | 91.4L x 1W centimeters |
| Item Length | 36 Inches |
| Item Type Name | Fuel Line Sleeve |
| Item model number  | 10671 |
| Manufacturer | Design Engineering, Inc. |
| Manufacturer  | Design Engineering, Inc. |
| Material Type | Glass, Polyester |
| Nominal Wall Thickness | 0.0625 inches |
| Outside Diameter | 0.5 Inches |
| Product Dimensions  | 6.35 x 8.89 x 25.4 cm; 9 g |
| UPC | 607078106711 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Design Engineering
- **Colour:** Silver
- **Material:** Glass, Polyester
- **Nominal wall thickness:** 0.0625 inches
- **Product dimensions:** 91.4L x 1W centimeters

## Images

![Design Engineering Vapor Block Sleeve 3/8" X 36" - Image 1](https://m.media-amazon.com/images/I/611pKpHjHbL.jpg)
![Design Engineering Vapor Block Sleeve 3/8" X 36" - Image 2](https://m.media-amazon.com/images/I/71+tYfjl4AL.jpg)
![Design Engineering Vapor Block Sleeve 3/8" X 36" - Image 3](https://m.media-amazon.com/images/I/71DiTiY8RqL.jpg)
![Design Engineering Vapor Block Sleeve 3/8" X 36" - Image 4](https://m.media-amazon.com/images/I/618-vtrOHSL.jpg)
![Design Engineering Vapor Block Sleeve 3/8" X 36" - Image 5](https://m.media-amazon.com/images/I/91b96fjlbBL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***D on 6 August 2025*

Works great for insulating the fuel line between the carb and filter. A bit tricky to get it sealing well around tight bends but still doable.

### ⭐⭐⭐⭐⭐ Review
*by B***Z on 26 August 2025*

De muy buena calidad y protección.

### ⭐⭐⭐⭐⭐ Review
*by T***I on 6 August 2021*

Great product easy to install Other people who used this had issues with the foil tape holding. I used alcohol pad and wiped where the foil tape will be applied. Other people probably didn't do that, You should always clean the area so any kind of tape you use for any kind pf application will stick. Like they say prep is the main part before applying anything.

## Frequently Bought Together

- Design Engineering Vapor Block Sleeve 3/8" X 36"
- EVIL ENERGY an Hose Fitting Adjustable Wrench Spanner Lightweight Aluminum 3AN-16AN Black

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.cy/products/368211327-design-engineering-vapor-block-sleeve-3-8-x-36](https://www.desertcart.com.cy/products/368211327-design-engineering-vapor-block-sleeve-3-8-x-36)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-31*