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📏 80mm (3 1/8") ID x 76mm STRAIGHT COUPLER - 80mm internal diameter, 5.5mm wall and 91mm Outside Diameter (OD). The 76mm piece suits a short joint for tight engine bays. Push it over two 80mm pipes or spigots of the same size to make a sealed inline joint. 🔧 BUILT FOR AIR INTAKE & INDUCTION DUCTING - joins hard pipe, hose and spigots on coolant, radiator, heater, turbo, intercooler and air intake systems in cars, vans, motorbikes, trucks, plant and industrial machinery. 🌡️ HIGH TEMPERATURE SILICONE -60°C to +180°C - stays flexible through extreme heat and cold and resists ozone, UV and moisture, so it will not harden, crack or perish the way ageing rubber hose does. 🛡️ 4-PLY POLYESTER REINFORCED - 4 layers of polyester fabric inside a 5.5mm silicone wall hold the coupler's shape under boost pressure and vacuum, with a smooth bore for clean airflow and coolant flow. ⚫ BLACK GLOSS FINISH - a smart black silicone joiner for a tidy engine bay. Cut with a sharp blade for a shorter joint, and secure each end with a hose clip sized for a 91mm Outside Diameter (OD). Also available in blue and red.