{"product_id":"mysttoo-5pcs-common-rail-fuel-injector-block-off-caps-12-20mm-diesel-cap-kit-for-cummins-duramax-ford","title":"Mysttoo 5PCS Common Rail Fuel Injector Block-Off Caps — 12–20mm Diesel Cap Kit for Cummins, Duramax \u0026 Ford","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Mysttoo 5PCS Common Rail Fuel Injector Block-Off Caps are a purpose-built diagnostics tool for diesel engines. This full kit provides five precision caps that help you isolate fuel flow during pressure testing, making it easier to observe changes in the system without external interference. The caps are designed to fit a range of commonrail systems and work with long-running engines, from on-car checks to bench tests, giving you a practical option for routine maintenance and troubleshooting.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits during diagnostic work\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBlock off the fuel rail during pressure diagnostics to create controlled testing conditions.\u003c\/li\u003e\n  \u003cli\u003eAssist in identifying faulty injectors and clarifying engine knock sounds by isolating individual cylinders.\u003c\/li\u003e\n  \u003cli\u003eSeal the common rail pipe area to minimize fuel leakage and protect test integrity.\u003c\/li\u003e\n  \u003cli\u003eDesigned to support precise diagnostics across multiple engine families without disturbing normal operation of other cylinders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDurable build for reliable testing\u003c\/h3\u003e\n\u003cp\u003eCrafted from high-quality carbon steel, these caps emphasize durability with anti-rusting and anti-stripped properties. The robust construction helps maintain a tight, consistent seal during testing, enabling repeatable results in demanding workshop environments. The combination of strength and corrosion resistance makes the caps suitable for repeated use across many diagnostic sessions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5 injector caps in sizes: M12x1.5, M14x1.5, M16x1.5, M18x1.5, M20x1.5\u003c\/li\u003e\n  \u003cli\u003eComprehensive kit that covers the common rail configurations found on popular diesel platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eIdentify the correct cap size for your injector port and ensure threads are clean.\u003c\/li\u003e\n  \u003cli\u003eInstall the appropriate cap onto the cylinder port to seal the rail during testing.\u003c\/li\u003e\n  \u003cli\u003ePerform the pressure test or diagnostic procedure, monitoring for changes in sound, pressure, or injector behavior.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eCompatibility and warranty\u003c\/h3\u003e\n\u003cp\u003eCompatible with 2003–2022 Cummins engines, 2001–2022 Duramax engines, and 2008–2022 Ford Powerstroke units. The kit includes a 24-month quality guarantee, reflecting Mysttoo’s commitment to customer satisfaction and reliable tooling performance.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose Mysttoo\u003c\/h3\u003e\n\u003cp\u003e Mysttoo focuses on practical, field-ready tools that support real-world maintenance workflows. These injector block-off caps offer a straightforward, repeatable approach to fuel rail testing—helping you work more confidently, efficiently, and safely in a busy shop or garage setting. \u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which engines are compatible with the Mysttoo 5PCS Common Rail Fuel Injector Block-Off Caps?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with 2003–2022 Cummins, 2001–2022 Duramax, and 2008–2022 Ford Powerstroke engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the kit include and what material is used?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes five caps (12, 14, 16, 18, 20 mm) made from carbon steel for durability and corrosion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mysttoo","offers":[{"title":"Default Title","offer_id":42466217164885,"sku":"B0F19FTQDQ","price":34.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/mysttoo-injector-block-off-cap-12mm.jpg?v=1778041756","url":"https:\/\/plentytorque.co.uk\/products\/mysttoo-5pcs-common-rail-fuel-injector-block-off-caps-12-20mm-diesel-cap-kit-for-cummins-duramax-ford","provider":"PlentyTorque","version":"1.0","type":"link"}