Heater Cable Tube 50-79. 211-703-523 211703523 - Manufacturer, Schofields £25.00 Quantity: at £25.00 each Add To Basket Steel Heater cable tube, exact dimensions of the original tubes. Fits all Splitscreen and Bay window 50-79. (For walkthru bus please add a note as we need to adapt the length) This is the steel tube that each heater cable runs through, Welded between crossmembers under the bus. PLEASE NOTE: UK mainland delivery only, please contact for shipping quote overseas.