{"product_id":"3mirrors-engine-air-valve-holder-pressure-pipe-kit-m10-m12-m14-m18-to-1-4-npt-for-ls-engines","title":"3mirrors Engine Air Valve Holder – Pressure Pipe Kit (M10\/M12\/M14\/M18 to 1\/4 NPT) for LS Engines","description":"\u003cdiv\u003e\n  \u003ch2\u003eOverview\u003c\/h2\u003e\n  \u003cp\u003eThe 3mirrors Engine Air Valve Holder Pressure Pipe Kit is designed to support LS engine work with a versatile set of adapters. Four thread options (M10, M12, M14, M18) convert to 1\/4 NPT and connect to a ball valve air pump quick connector for controlled testing and service. Note: not suitable for diesel engines.\u003c\/p\u003e\n  \u003cp\u003eIdeal for gasoline-powered applications, it pairs with cars, trucks, boats, motorcycles, and ATVs, delivering a practical solution for valve-related tasks. The system provides direct access to spark plug holes and related ports, enabling careful pressurization without removing major components.\u003c\/p\u003e\n  \u003ch3\u003eKey features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThread adapters: M10, M12, M14, M18 to 1\/4 NPT with a ball valve quick connector.\u003c\/li\u003e\n    \u003cli\u003eInner interface: 1\/4 NPT for versatile connections.\u003c\/li\u003e\n    \u003cli\u003eHose I.D.: 3\/8\" (9.5 mm) for stable airflow during testing.\u003c\/li\u003e\n    \u003cli\u003eWorking pressure: 30 PSI to 300 PSI (2 to 20 bar) to cover typical testing ranges.\u003c\/li\u003e\n    \u003cli\u003eCompact and portable design for on-site service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003eHow it helps during engine work\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFacilitates valve spring or valve stem seal replacement by pressurizing the cylinder while keeping the valve closed.\u003c\/li\u003e\n    \u003cli\u003eAllows diagnostic checks by listening for leaks or sensing patterns of air leakage during compression.\u003c\/li\u003e\n    \u003cli\u003eHelps prevent the valve from falling into the combustion chamber during service with controlled pressure.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eDurable construction and precise threading support repeated use, while the compact form keeps your workspace organized and accessible in tight engine bays.\u003c\/p\u003e\n  \u003ch3\u003ePractical uses and scenarios\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eWidely applicable to gasoline engines in cars, trucks, boats, motorcycles, and ATVs.\u003c\/li\u003e\n    \u003cli\u003eSuitable for garages, workshops, or on-site service where LS engine maintenance is needed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003eTips for best results\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eRemove the spark plug and install the joint at the spark plug location when using M10+M12 or M14+M18 to NPT.\u003c\/li\u003e\n    \u003cli\u003eFollow standard safety practices and ensure the system is rated for the tested pressure range.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eIf you have questions, our support team can help with setup guidance and compatibility notes.\u003c\/p\u003e\n\u003c\/div\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: Is this kit compatible with LS engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Designed for gasoline LS engines; not suitable for diesel engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I use the kit for valve work?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Remove the spark plug, attach the joint, pressurize the cylinder, and inspect for leaks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"3mirrors","offers":[{"title":"Default Title","offer_id":42466295939157,"sku":"B0D4YRFGNP","price":33.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/3mirrors-engine-air-valve-holder-m10-m12-m14-m18-assembly.jpg?v=1778045716","url":"https:\/\/plentytorque.co.uk\/products\/3mirrors-engine-air-valve-holder-pressure-pipe-kit-m10-m12-m14-m18-to-1-4-npt-for-ls-engines","provider":"PlentyTorque","version":"1.0","type":"link"}