{"product_id":"arb-npt-hose-coupling-1pk-us-standard-1-4-npt-thread-durable-replacement-for-air-fluid-lines","title":"ARB NPT Hose Coupling 1Pk — US‑Standard 1\/4\" NPT Thread, Durable Replacement for Air \u0026 Fluid Lines","description":"\u003cp\u003e\u003cstrong\u003eARB Hose Coupling US Std NPT 1Pk (740112) is a single, US-standard NPT hose coupling engineered for reliable, leak-resistant connections in demanding automotive and off-road environments.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact coupling is a purpose-built replacement or upgrade part from ARB, a well-known manufacturer of high-quality automotive components. It’s made to meet standard NPT threading and rugged use, so it integrates cleanly with compatible hoses, fittings, and compressed-air systems often found in workshops, garages, and overland kits. Built for durability and repeatable performance, the 740112 part is a practical choice when you need a dependable threaded connection without modifying existing plumbing.\u003c\/p\u003e\n\n\u003ch3\u003eWill this coupling fit my existing NPT hoses and fittings?\u003c\/h3\u003e\n\u003cp\u003eIf your system uses US-standard NPT threads, this ARB coupling is designed to thread in directly with compatible male or female NPT components. Verify that the thread size and pitch match your hose or adapter before ordering to ensure a proper seal and correct assembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to US-standard NPT thread dimensions for broad compatibility\u003c\/li\u003e\n  \u003cli\u003eIdeal for threaded air and fluid lines that require a standard NPT join\u003c\/li\u003e\n  \u003cli\u003eSold as a single-piece pack (1Pk) for targeted replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the ARB coupling hold up in heavy use conditions?\u003c\/h3\u003e\n\u003cp\u003eThis coupling is produced by ARB with a focus on longevity under real-world stresses. Materials and finishes are selected to resist wear, repeated assembly cycles, and common workshop exposures—helping reduce leaks and maintenance downtime.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered and tested for durability in automotive and off-road applications\u003c\/li\u003e\n  \u003cli\u003eDesigned to withstand repeated thread engagement without degrading the seal\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds applicable standardized testing for reliable field performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the practical installation tips for a secure seal?\u003c\/h3\u003e\n\u003cp\u003eProper installation keeps thread sealants and mechanical load in check. Use an appropriate NPT thread sealant or PTFE tape, and tighten to recommended torque for your system to avoid overtightening or thread damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean threads before applying PTFE tape or thread compound to ensure a tight seal\u003c\/li\u003e\n  \u003cli\u003eWrap PTFE tape clockwise around male threads for consistent engagement\u003c\/li\u003e\n  \u003cli\u003eHand-start threading to avoid cross-threading, then tighten with a wrench to spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this coupling be used for both air and fluid applications?\u003c\/h3\u003e\n\u003cp\u003eThe ARB NPT coupling is suitable for many air and non-corrosive fluid uses when installed with compatible hoses and rated system components. Confirm chemical compatibility and pressure ratings of your whole assembly before using in fluid transfer or pressurized systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAppropriate for compressed-air lines and many standard fluid lines when matched correctly\u003c\/li\u003e\n  \u003cli\u003eCheck system pressure and fluid compatibility with materials used in the coupling\u003c\/li\u003e\n  \u003cli\u003ePair with ARB or other rated components to maintain overall system safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This ARB Hose Coupling US Std NPT 1Pk (740112) suits mechanics, overlanders, and DIY technicians who need a reliable NPT-threaded coupler for routine maintenance, repairs, or upgrades. It’s especially useful when you want a straightforward, single-unit replacement that adheres to industry thread standards, provides long service life, and integrates easily into existing hoses and fittings without custom modification.\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: Is this ARB coupling compatible with all NPT fittings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits US-standard NPT fittings, but confirm thread size and pitch match your existing components before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need sealant to install the coupling?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—use PTFE tape or a suitable NPT thread sealant and tighten to recommended torque for a reliable seal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":55168517931351,"sku":"B07N1JTKZF","price":46.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/arb-hose-coupling-front-view.jpg?v=1790406332","url":"https:\/\/britishgarage.co.uk\/products\/arb-npt-hose-coupling-1pk-us-standard-1-4-npt-thread-durable-replacement-for-air-fluid-lines","provider":"British Garage","version":"1.0","type":"link"}