---
product_id: 46562410
title: "Duramax Diesel Injector Block-Off Tool/Cap Set fits LB7 LLY LBZ LMM LML LGH (2001-2016)"
brand: "accuratediesel"
price: "46.89 OMR"
currency: OMR
in_stock: true
reviews_count: 1
url: https://www.desertcart.com.om/products/46562410-duramax-diesel-injector-block-off-tool-cap-set-fits-lb7
store_origin: OM
region: Oman
---

# Essential for pinpointing injector issues Precision fit for 2001-2016 Duramax engines Proudly made in the USA Duramax Diesel Injector Block-Off Tool/Cap Set fits LB7 LLY LBZ LMM LML LGH (2001-2016)

**Brand:** accuratediesel
**Price:** 46.89 OMR
**Availability:** ✅ In Stock

## Summary

> 🛠️ Diagnose Like a Pro, Fix Like a Boss

## Quick Answers

- **What is this?** Duramax Diesel Injector Block-Off Tool/Cap Set fits LB7 LLY LBZ LMM LML LGH (2001-2016) by accuratediesel
- **How much does it cost?** 46.89 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/46562410-duramax-diesel-injector-block-off-tool-cap-set-fits-lb7)

## Best For

- accuratediesel enthusiasts

## Why This Product

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

## Key Features

- • **Complete Coverage:** Ensures full injector block-off for reliable testing and repair
- • **Broad Compatibility:** Seamlessly fits LB7, LLY, LBZ, LMM, LML, and LGH Duramax models (2001-2016)
- • **Essential Technician Tool:** A must-have for every Duramax professional aiming to save time and avoid guesswork
- • **Ultimate Diagnostic Power:** Pinpoint no-start injector problems with surgical accuracy
- • **Durable American Craftsmanship:** Engineered and manufactured in the USA for trusted quality

## Overview

The AccurateDiesel Duramax Diesel Injector Block-Off Tool/Cap Set is a precision-engineered diagnostic essential designed to fit all major Duramax engines from 2001 to 2016. Made in the USA, it provides complete injector coverage to quickly identify and isolate no-start conditions caused by faulty injectors, making it an indispensable tool for professional technicians and diesel enthusiasts alike.

## Description

Are you the local Duramax expert? Be prepared for any Dmax that rolls in the door with this three-piece block off tool kit. - The cap on the left fits 2001 - 2004 LB7 - The middle cap fits 2006 - 2010 LBZ and LMM - The cap on the right fits 2011 - 2016 LML and LGH NOTE: The LB7 cap will also work on 2003 - 2007 5.9L Cummins. The LBZ/LMM cap will also work on 2007 - 2017 6.7L Cummins applications. These tools are a "must have" for anyone who works on Duramax common rail fuel systems. When a Duramax common rail engine will not start, the very first thing to check is fuel rail pressure. If the pressure is less than spec, one of the most likely causes is a defective injector that is returning excess fuel back to the tank. A return flow volume test will verify if excessive return flow is the problem. A cap is then used to identify the individual cylinder that is at fault. The injection line is removed for one cylinder at a time and the cap installed on the fuel rail in place of the injection line. When the cylinder with the offending injector is capped, the rail pressure will rise and the truck will start. In some cases it can be highly advantageous to have multiple caps, because several injectors that return slightly too much fuel can have the same effect as a single injector with extremely excessive return flow. To purchase complete sets of block off tools, please see our other listings. Injector block off tools can also be useful for diagnosing engine knocking sounds that may be attributable to an injector or a single cylinder problem particularly on engines where this capability is not available through the scan tool, or a bi-directional scan tool is not available. When working on high pressure fuel systems, always educate yourself first by reading appropriate factory service information, use common sense, and, above all, WEAR SAFETY GOGGLES!

## Features

- A "must have" for any Duramax Technician
- Very helpful for No-start diagnostics
- Provides complete coverage for 2001 - 2016 Chevy / GMC Duramax
- Most often used for locating an injector with high return rate that is causing a no-start condition
- Made in the USA / Fits LB7 LLY LBZ LMM LML and LGH

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | AccurateDiesel |
| Brand | AccurateDiesel |
| Item model number | 9011-1 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | ATS9011-9864-1116 |

## Images

![Duramax Diesel Injector Block-Off Tool/Cap Set fits LB7 LLY LBZ LMM LML LGH (2001-2016) - Image 1](https://m.media-amazon.com/images/I/71SZDPXqXwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    as described
  

*by Z***W on Reviewed in the United States on June 10, 2021*

arrived on time fits just fine

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---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-22*