13mm ID Silicone 2 Ply Heater Radiator Hose 4 Metre Length Red

📏 13MM (1/2") BORE, 4M LENGTH – 13mm internal diameter, 20mm outside diameter and 3.5mm wall, supplied as one continuous 4 metre length (13.1ft, approx. 0.95 kg), ideal for a full heater circuit or several short lines. 🔧 SILICONE HEATER AND RADIATOR HOSE – for cars, vans, motorbikes, classics and kit cars. The 13mm bore suits heater matrix feed and return pipes, coolant bleed lines and expansion tank connections. 🛡️ 2-PLY POLYESTER REINFORCED – smooth extruded silicone inner, 2-ply polyester braid and a silicone outer layer, made to SAE J20 R3. Resists ozone, ageing, cracking and coolant additives far longer than rubber. Trim the length with a sharp blade for a square, leak-free end. 🌡️ -30°C TO +200°C RATED – continuous operating range -30°C to +200°C with peaks to +220°C. This 13mm bore is rated 7 bar working and 21 bar burst pressure, with a 120mm minimum bend radius. 🔴 RED SILICONE – red finish that keeps its colour under bonnet heat. For coolant, water and air only – not suitable for fuel or oil. Use hose clips sized for the 20mm outside diameter.