1989 Chevrolet Truck R3500 1 ton P/U 2WD 7.4L 4BL 8cyl I can't identify the small coolant hose that runs from right under the carburator then down onto the top of the engine. Hose is about 8" to 10" long and is pre-formed. Had to replace it and all my local part stores couldn't help and only gave me a stretch of heater hose. This hose kinks. The thermostat is forward and to the right of this hose, but not attached to it. I know this may sound simple to most of you, but I need the proper term for this particular hose, so I can order a pre-formed hose. All help will be appreciated greatly.