--- product_id: 466658435 title: "Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool" brand: "kweiny" price: "AR$62346" currency: ARS in_stock: true reviews_count: 5 category: "Kweiny" url: https://www.desertcart.com.ar/products/466658435-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool store_origin: AR region: Argentina --- # M14x1.5mm precision fit Compatible with 6.6L Duramax & 5.9L Cummins Carbon tool steel, galvanized finish Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool **Brand:** kweiny **Price:** AR$62346 **Availability:** βœ… In Stock ## Summary > πŸ”© Seal the deal on diesel diagnostics like a pro! ## Quick Answers - **What is this?** Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool by kweiny - **How much does it cost?** AR$62346 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/466658435-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 - β€’ **Compact & Lightweight:** Small 20x20x23mm size and 14g weight for easy handling and storage. - β€’ **Engine Knock Detective:** Identify cylinder knocking issues without expensive scanner diagnostics. - β€’ **Plug & Play Compatibility:** Fits 2001-2005 Chevy/GMC Duramax and 2003-2007 Dodge/Cummins Bosch common rail systems effortlessly. - β€’ **Built to Last, Built for Pros:** Crafted from durable carbon tool steel with a corrosion-resistant galvanized surface. - β€’ **Pinpoint Injector Faults Fast:** Diagnose faulty diesel injectors by isolating cylinders with precision sealing. ## Overview The kweiny Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool is a precision-engineered diagnostic accessory designed to isolate and identify faulty diesel injectors in popular 6.6L Duramax and 5.9L Cummins engines. Made from durable carbon tool steel with a galvanized finish, it blocks fuel supply to individual cylinders, enabling quick detection of injector issues and engine knocking without relying solely on scanners. Compact and lightweight, it’s a must-have for professional mechanics and diesel enthusiasts aiming for efficient, reliable engine maintenance. ## Description Operation principle: When the pressure of the common rail is too low to start the engine. One of the possible reasons is a defective diesel fuel injector returning excess fuel back to the tank. To identify the individual defective cylinder. You can remove the diesel fuel injection line from the cylinder, and use this block off tool instead of diesel fuel injection line to seal common rail pipe. If the engine can be started normally, and the common rail pressure return to normal value. It prove that the injector of this cylinder is malfunction.If your scanner cannot perform certain tests. This diesel injector block off tool can also be used for diagnosing engine knocking sounds that could possibly be caused by a single cylinder issue.In some situations, You may need several block off tools to test several injectors at the same time.Compatibility: 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;Package include: 1 x Block Off ToolSpecification: M14 x 1.5mmMaterial:Carbon tool steel, surface antirust. Review: Fits excellent! - Excellent Review: Cumple su objetivo - Si me agrado. Y pude eliminar el inyector y saber que cilindro estΓ‘ malo ## 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 | |---------------|-------| | ASIN | B081NGCSVW | | Brand | kweiny | | Brand Name | kweiny | | Closure Type | Twist-On | | Colour | Galvanized | | Compatible with Vehicle Type | Truck | | Customer Reviews | 4.7 out of 5 stars 187 Reviews | | Exterior Finish | Galvanized | | Item Dimensions | 20 x 20 x 23 Millimeters | | Item dimensions L x W x H | 20 x 20 x 23 Millimeters | | Manufacturer | Xingzhu | | Manufacturer Part Number | XZAMBS001 | | Material | Carbon Tool Steel | | Material Type | Carbon Tool Steel | | Model | oz | | Style Name | Modern | | Unit Count | 1.0 Count | | Vehicle Service Type | Truck | ## Product Details - **Brand:** kweiny - **Colour:** Galvanized - **Exterior Finish:** Galvanized - **Item dimensions L x W x H:** 20 x 20 x 23 Millimeters - **Material:** Carbon Tool Steel ## Images ![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool - Image 1](https://m.media-amazon.com/images/I/61qxRMNns3L.jpg) ![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool - Image 2](https://m.media-amazon.com/images/I/61UqTmmKq8L.jpg) ![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool - Image 3](https://m.media-amazon.com/images/I/61K4pzxrAGL.jpg) ![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool - Image 4](https://m.media-amazon.com/images/I/61NIS10p3WL.jpg) ![Diesel Common Rail 14mm Fuel Injector Cap Block Off Tool - Image 5](https://m.media-amazon.com/images/I/51AsRXnIwmL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits excellent! *by M***N on 3 December 2023* Excellent ### ⭐⭐⭐⭐⭐ Cumple su objetivo *by A***Z on 11 March 2024* Si me agrado. Y pude eliminar el inyector y saber que cilindro estΓ‘ malo ### ⭐⭐⭐⭐⭐ Very handy tool. *by R***N on 30 October 2023* Very handy tool for diagnosing injector issues. Fast delivery. Thank you. ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/466658435-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool](https://www.desertcart.com.ar/products/466658435-diesel-common-rail-14mm-fuel-injector-cap-block-off-tool) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-19*