I have a burst hose either entering or exiting the heater core in my 1989 Dodge Dakota..

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Auto zone has hoses for your truck $10-20. The challenge you face is to remove the factory band clamps WITHOUT damaging the heater core connections. A dremel type tool with a small cutting wheel would be ideal: It's small enough to maneuver and has so little power that managing it should be easy.Protect your eyes from the debris, drain the system as much as possible first. Plan on replacing both hoses: Are you sure it's a hose and not the core itself?
 
...truck with a 3.9 six. ? The truck sat for a while and the hose is most likely dry rotted. The problem is, it has a crimped end instead of an end with a clamp. This makes just going to the parts store and getting a replacement hose and replacing it out of the question. I have the universal fix on it now, duct tape, but it will only slow the leak for a awhile since the cooling system is under pressure. The burst hose has an outer diameter of about an inch to an inch 1/8, (254 to 300mm).
Does anyone have any ideas? I live in America so parts stores are closeby. I would appreciate any descriptive answers!
I understand the basics, but I am not a mechanic and I have tools.

Thanks so much, Scotty
 
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