---
product_id: 649285598
title: "4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe"
brand: "jnnj"
price: "€ 28.69"
currency: EUR
in_stock: true
reviews_count: 9
category: "Jnnj"
url: https://www.desertcart.gr/products/649285598-4-pieces-fuel-injector-return-connector-common-rail-diesel-injector
store_origin: GR
region: Greece
---

# Corrosion & heat resistant plastic 5.5mm compression thread size 4 pcs set for versatile repairs 4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe

**Brand:** jnnj
**Price:** € 28.69
**Availability:** ✅ In Stock

## Summary

> ⛽ Upgrade your fuel system with leak-proof precision!

## Quick Answers

- **What is this?** 4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe by jnnj
- **How much does it cost?** € 28.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/649285598-4-pieces-fuel-injector-return-connector-common-rail-diesel-injector)

## Best For

- jnnj enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Plug-and-play design requires no cutting or drilling—perfect for quick, professional-grade repairs.
- • **All-in-One Connector Kit:** 4-piece set with 2-way L-shape & 3-way T-shape connectors to cover diverse fuel line needs.
- • **Multi-Fluid Compatibility:** Seamlessly connects air, water, gas, fuel, and oil lines—ideal for automotive, marine, and industrial applications.
- • **Leak-Proof Seal Technology:** Durable sealing rings ensure zero leakage, maintaining optimal fuel injector performance.
- • **Premium Weatherproof Material:** High-quality plastic resists chemical corrosion, aging, and extreme temperatures for long-lasting use.

## Overview

The JNNJ 4 Pieces Fuel Injector Return Connector set includes durable, corrosion-resistant plastic connectors in 2-way L-shape and 3-way T-shape designs. Featuring 5.5mm compression threads and tight sealing rings, these connectors ensure leak-free, efficient fuel return line connections compatible with diesel and various fluid lines. Easy to install without modifications, this versatile kit supports automotive and industrial fuel injector maintenance with long-lasting reliability.

## Description

Specification: - Product name: Injector return port - Product colour: Black - Product material: Plastic - Product dimensions: 24.4*4.85*5.5mm(2-way), 37.15*4.85*5.5mm(3-way) - Product weight: 0.5kg/set - Type of application: Automotive fuel injectors - Product includes: 1*Plastic 2-way + 3*plastic 3-way Features: - High quality material, sturdy structure, corrosion resistance, high temperature resistance, lightweight and durable. - Durable design, strong and durable, smooth surface and inner wall, can be connected to a variety of pipelines and transported efficiently. - Simple and fast connection for air, water, gas, fuel, oil and inert gas lines. - Widely applicable to trucks, cars, boats, gardens, plumbing, heaters, furnace repairs, etc. - Tight connection with no leakage, can replace old or broken fittings, suitable for most cars.

Review: Good product - Arrived OK thank you
Review: Don't fit... - Part Don't fit. Although it says it do when you put reg and make of vehicle.

## Features

- 【Durable Material】: This injector return port is made of high quality plastic, stable structure, lightweight and strong, sturdy and durable, not easy to deform or break, resistant to chemical corrosion and aging, and adaptable to various weather conditions, can be used for a long time.
- 【Tight Connection】: This injector return fitting is fitted with a piece of strong and durable sealing ring on the connector to make a tight connection, no leakage during use, smooth surface and inner wall for smooth spraying of oil, making it a highly desirable replacement part.
- 【2 Shapes】: The package contains 2 types of injector return connections, 2-way L-shape connector and 3-way T-shape connector, the 2-way connector has a full length of 24.4mm and the 3-way connector has a full length of 37.15mm, both of them have an interface size of 5.5mm and an outlet of 4.85mm.
- 【Easy to Use】: This injector return fitting is easy to install and disassemble: just connect the hoses with the corresponding inner diameters to the fittings, simplifying the installation procedure, no modification, cutting or drilling, safe and tight connection, fast and efficient delivery.
- 【Package Contains】: You will get 1pc 2-way connector and 3pcs 3-way connector, 4pcs in total, widely used to connect all kinds of pneumatic pipes, suitable for hydraulic hoses, air, water, liquid, fuel, oil and gas enough for spare, easily meet your various connection needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSW7C8Z2 |
| Brand | JNNJ |
| Connector Type | Compression |
| Country of Origin | China |
| Customer Reviews | 3.8 out of 5 stars 164 Reviews |
| Exterior Finish | Plastic |
| Exterior finish | Plastic |
| Inlet Connection Type | Compression |
| Inlet connection type | Compression |
| Manufacturer | JNNJ |
| Material | Plastic |
| Model Number | JNNJ-Port |
| Number of Pieces | 4 |
| Number of Ports | 5 |
| Number of ports | 5 |
| Outlet Connection Type | Compression |
| Outlet connection type | Compression |
| Part Number | JNNJ-Port |
| Set Name | Set of 4 |
| Size | 24.4x4.85x5.5mm/37.15x4.85x5.5mm |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | ISO 9001 |
| Thread Size | 5.5mm |
| Thread Type | Smooth/Compression |
| Unit Count | 1.0 count |
| Valve Type | Fuel Injector Valve |

## Product Details

- **Brand:** JNNJ
- **Exterior finish:** Plastic
- **Inlet connection size:** 4.85 Millimeters
- **Inlet connection type:** Compression
- **Material:** Plastic
- **Number of Packs:** 4
- **Number of ports:** 5
- **Outlet connection size:** 4.85 Millimeters
- **Outlet connection type:** Compression
- **Specification met:** ISO 9001

## Images

![4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe - Image 1](https://m.media-amazon.com/images/I/51kW6h-7PUL.jpg)
![4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe - Image 2](https://m.media-amazon.com/images/I/616xgi7X7kL.jpg)
![4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe - Image 3](https://m.media-amazon.com/images/I/613POirF7eL.jpg)
![4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe - Image 4](https://m.media-amazon.com/images/I/71RBhRrqnKL.jpg)
![4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe - Image 5](https://m.media-amazon.com/images/I/513J7IkNb+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by R***N on 16 August 2025*

Arrived OK thank you

### ⭐ Don't fit...
*by P***G on 4 March 2025*

Part Don't fit. Although it says it do when you put reg and make of vehicle.

### ⭐⭐⭐⭐⭐ Dose what it's supposed to
*by S***S on 6 April 2025*

Fits perfectly

## Frequently Bought Together

- JNNJ 4 Pieces Fuel Injector Return Connector, Common Rail Diesel Injector Leak Off Pipe Return Connectors, Fuel Return Line Injector Connector Fits for Diesel, for Air Water Gas Fuel Oil Pipe
- Autobar DL01 Diesel Leak Off Kit 1m Garage Workshop Replacement Spare Part, Black

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---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-07-16*