2007 Expedition rear coolant line

[subi]

So I have a 2007 Ford Expedition. I was cutting my muffler off and nicked a aluminum coolant line in the rear that sits on top of the exhaust exit. I’m looking to splice the line but I don’t know what part to get, size, or how hard it will be to splice it. Can someone shed some light on this for me please?

 

[barrydu4]

Morning. If it's a refrigeration line for the rear a/c evaporator, it will need to be brazed. Because of the pressures involved, any type of splice will not work. Compression fittings or flared fittings are not recommended.