---
product_id: 172573074
title: "Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models"
brand: "kweiny"
price: "€ 23.58"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sk/products/172573074-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool
store_origin: SK
region: Slovakia
---

# Blocks fuel supply for injector testing Precision M14x1.5mm thread fit Durable carbon tool steel build Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models

**Brand:** kweiny
**Price:** € 23.58
**Availability:** ✅ In Stock

## Summary

> 🔩 Diagnose like a pro, fix like a boss!

## Quick Answers

- **What is this?** Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models by kweiny
- **How much does it cost?** € 23.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/172573074-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool)

## Best For

- kweiny enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** At under half an ounce and less than an inch in size, it’s the ultimate space-saving diagnostic tool.
- • **Tailored Compatibility:** Specifically designed for 2001-2005 Duramax 6.6L and 2003-2007 Cummins 5.9L Bosch common rail systems.
- • **Engineered for Durability:** Crafted from galvanized carbon tool steel to withstand tough workshop environments.
- • **Instant Cylinder Isolation:** Temporarily disables faulty cylinders by blocking fuel flow, speeding up troubleshooting.
- • **Pinpoint Injector Faults with Surgical Precision:** Fits 14mm fuel line nuts on Chevy, GMC, and Dodge diesel engines for exact diagnostics.

## Overview

The Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool is a precision-engineered diagnostic device designed for professional-grade troubleshooting of diesel injectors on Chevy/GMC Duramax 6.6L (2001-2005) and Dodge Cummins 5.9L (2003-2007) engines. Made from durable galvanized carbon tool steel, it temporarily blocks fuel supply to individual cylinders, enabling quick identification of faulty injectors and engine knocking sources. Compact and vehicle-specific, this tool is essential for efficient diesel engine maintenance and repair.

## Description

Full description not available

## Features

- Main Usage: Identification of faulty diesel fuel injectors and diagnosis of engine cylinder knocking sounds;
- Compatibility: Fit with 2001-2005 6.6L Chevy/GMC Duramax and for Dodge/Cummins 2003-2007 5.9L, for Bosch diesel common rail system, and other vehicles with a 14mm fuel line nut;
- Working principle: Block the fuel supply to the detected cylinder, and sealed diesel common rail pipe. Make the detected cylinder temporarily stop working;
- Specification: M14x1.5mm internal thread nut;
- Material: Carbon tool steel, surface galvanized.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | kweiny |
| Color | Galvanized |
| Material | Carbon Tool Steel |
| Exterior Finish | Galvanized |
| Item dimensions L x W x H | 0.78 x 0.78 x 0.9 inches |
| Vehicle Service Type | Truck |
| Style | Modern |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | Xingzhu |
| Model | M14 |
| Item Weight | 0.493 ounces |
| Product Dimensions | 0.78 x 0.78 x 0.9 inches |
| Item model number | oz |
| Manufacturer Part Number | XZAMBS001 |
| Safety Rating | None |
| Lift Type | manual |

## Product Details

- **Brand:** kweiny
- **Color:** Galvanized
- **Material:** Carbon Tool Steel
- **Exterior Finish:** Galvanized
- **Item dimensions L x W x H:** 0.78 x 0.78 x 0.9 inches

## Images

![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models - Image 1](https://m.media-amazon.com/images/I/61qxRMNns3L.jpg)
![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models - Image 2](https://m.media-amazon.com/images/I/61UqTmmKq8L.jpg)
![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models - Image 3](https://m.media-amazon.com/images/I/61K4pzxrAGL.jpg)
![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models - Image 4](https://m.media-amazon.com/images/I/61NIS10p3WL.jpg)
![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool for Chevy GMC Duramax 6.6L and Dodge Cummins 5.9L Some Models - Image 5](https://m.media-amazon.com/images/I/51AsRXnIwmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cumple su objetivo
*by A***Z on March 11, 2024*

Si me agrado. Y pude eliminar el inyector y saber que cilindro está malo

### ⭐⭐⭐⭐⭐ works on 2006 ram 5.9
*by M***9 on January 26, 2024*

fit our 2006 ram 2500 5.9 cummins and we found the bad injector.

### ⭐⭐⭐⭐ Good product.
*by S***L on May 13, 2020*

Works as it should. Functions same as miller tool 9011. Must have for diagnosing Cummins fuel systems.Did take awhile to ship.

## Frequently Bought Together

- kweiny Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool
- 6 Cylinder Diesel Injector Flow Meter Diagnostic Set, Cylinder Common Rail Adaptor Test Tool Leak Off Test Kit

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**Shop now:** [https://www.desertcart.sk/products/172573074-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool](https://www.desertcart.sk/products/172573074-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-03*