{"product_id":"roadformer-4-t-bolt-hose-clamp-108-116mm-4-2-pack-stainless-steel-spring-loaded-constant-tension","title":"ROADFORMER 4\" T-Bolt Hose Clamp 108–116mm (4\") 2-Pack — Stainless Steel Spring-Loaded Constant Tension","description":"\u003cp\u003e\u003cstrong\u003eROADFORMER 4\" heavy-duty spring-loaded T-bolt hose clamps are stainless-steel, auto-adjusting clamps designed to keep 4\" (108–116mm) hoses sealed under changing temperatures and pressure.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese clamps combine a wide stainless-steel band, a robust T-bolt fastener, and a zinc-plated carbon spring to hold consistent tension on hoses with 3–6mm wall thickness. Built for demanding automotive and industrial environments, the spring-loaded design compensates for thermal expansion and vibration so connections stay tight without manual re-torquing. Each pack contains two clamps sized for nominal 4\" hose installations where a reliable, corrosion-resistant seal is essential.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the spring-loaded T-bolt maintain a leak-free connection?\u003c\/h3\u003e\n\u003cp\u003eThe integrated spring automatically adjusts the clamp’s tension as the hose and fitting expand or contract with temperature and pressure changes. This continuous compensation reduces the risk of loosening that can happen with fixed clamps, preserving an even sealing pressure along the hose circumference.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eZinc-plated carbon spring provides automatic tensioning across thermal cycles\u003c\/li\u003e\n  \u003cli\u003eFloating bridge spreads load evenly to avoid hose pinching\u003c\/li\u003e\n  \u003cli\u003eNylon-insert locknut prevents loosening from vibration\u003c\/li\u003e\n  \u003cli\u003eStainless-steel construction resists corrosion in harsh environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these clamps fit my 4\" hose and how to verify fit?\u003c\/h3\u003e\n\u003cp\u003eThese clamps fit hoses with outside diameters that fall within the working range of 108–116mm (4.25\"–4.57\") and are intended for hose wall thicknesses from 3mm to 6mm. Measure the hose outside diameter, including any insulation or couplers, before ordering to ensure the clamp will sit correctly and engage the T-bolt fully.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking range: 108mm–116mm (4.25\"–4.57\")\u003c\/li\u003e\n  \u003cli\u003eSuitable for 3mm–6mm hose wall thickness\u003c\/li\u003e\n  \u003cli\u003eDesigned for nominal 4\" hoses—measure OD to confirm\u003c\/li\u003e\n  \u003cli\u003eTwo clamps per pack for paired or backup installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat applications are these T-bolt clamps best suited for?\u003c\/h3\u003e\n\u003cp\u003eROADFORMER spring-loaded T-bolt clamps are intended for high-demand installations where temperature swings, vibration, or pressure changes occur. Common uses include turbocharger charge pipes, intercooler couplers, coolant lines, marine hose connections, and heavy equipment ducting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTurbo charge air cooling and intercooler couplings\u003c\/li\u003e\n  \u003cli\u003ePrimary engine coolant and heater hoses\u003c\/li\u003e\n  \u003cli\u003eMarine and off-highway equipment exposed to corrosion\u003c\/li\u003e\n  \u003cli\u003eRacing and performance engines with frequent thermal cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and serviceable are these clamps over time?\u003c\/h3\u003e\n\u003cp\u003eConstructed from stainless-steel band and bolt plus a robust zinc-plated spring, these clamps are built to resist corrosion, vibration, and mechanical fatigue. The floating bridge and nylon locknut add reliability and reduce maintenance, allowing longer intervals between inspections in harsh service conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless-steel band and bolt for long-term corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eZinc-plated spring resists rust while retaining elasticity\u003c\/li\u003e\n  \u003cli\u003eFloating bridge reduces hose wear and distributes clamping force\u003c\/li\u003e\n  \u003cli\u003eNylon insert locknut secures torque against vibration loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: ROADFORMER 4\" spring-loaded T-bolt hose clamps are aimed at mechanics, racers, fleet operators, and DIY enthusiasts who need dependable hose connections in engines, turbo systems, marine craft, and heavy machinery. Choose these clamps when you require an automatic tensioning solution that handles thermal cycling, vibration, and corrosive conditions without frequent retightening.\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: Do these clamps require periodic retightening?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The spring-loaded design compensates for thermal changes, reducing the need for retightening; inspect periodically for wear or damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these clamps corrosion-resistant for marine use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—stainless-steel band and bolt plus a zinc-plated spring improve corrosion resistance for marine and harsh environments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ROADFORMER","offers":[{"title":"Default Title","offer_id":48087483941022,"sku":"B0FSD44BFB","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/roadformer-front-packaging-4-inch-t-bolt-clamp.jpg?v=1785924689","url":"https:\/\/northtrailauto.ca\/products\/roadformer-4-t-bolt-hose-clamp-108-116mm-4-2-pack-stainless-steel-spring-loaded-constant-tension","provider":"North Trail Auto","version":"1.0","type":"link"}