Oil Cooler Lines?
 

I have an oil cooler on the rear of my engine. I think it's probably from an hp500 or something similar. It has the typical merc. inverted flare fittings that take a 3/4-18 nut. I want to run -10 lines are there any adapters out there that go from the inverted to an AN fitting? I have looked but didn't come up with anything.

Your coolers have the Inverted Flare on the cooler, or is there an Adapter that has the inverted flare? Mercury has about 5 different versions of the same cooler...

Honestly, if you have the flare on the cooler, I would get a new cooler that isnt going to cause much stress and can be set up however you like! Many times we build coolers to the stock size specs with different fitting options. We can build you a custom cooler for about $275.00... Might be a good idea, considering the 2 fittings you need will most likely be $100.00.

If you are interested give us a call and we can go over what you have and some options.. -Eric