For about $25 you can give your harley premium oil cooler the stainless steel braided hose look. You could even argue there is a functional advantage to this to, as the rubber hose is actually sheathed in a stainless steel braid. This would make holes in your cooler lines pretty impossible (although I don't think there is much danger in that with the stock rubber). Here is an excerpt, and a few pictures from another post I did in another thread. Ride on safe!
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PS This is a braided fuel line kit they sell at Pep Boys here in Cali. You'll note the kit only comes with 2 of the "threaded connection look" hose clamp covers. Since you have to cut the 3 foot line down into 2 hoses (you'll have some line left over)...you'll need to buy 2 additional hose clamp covers. The Pep Boys I went to was out of them, so I used 2 I had previously bought at autozone. Those 2 are red/blues anodized...the 2 that came with the kit were chrome. So, I used the chrome covers at the oil cooler connections, and the red/blue anodized at the filter adapter connections. Without further delay, here are the original post extract, and pictures:
"...I went to Pep Boys and bought steel braided line in the performance section ($17 for the 3/8 inch X 3 feet kit) and a couple of extra "dressy looking" screw clamps for it (The kit comes with 2, but you need 4). These clamps make the line connections look like screwed/bolted connections. In reality they are typical screw type hose clamps in disguise. Still, it looks much better than the rubber hose and connections that come with the cooler, and the stainless steel braiding is insurance against holes in your line. I'm attaching pics of this also."