| Yep some of the early KTM oil coolers were replaced under the recall.Some were swapped for another KTM item others for a Toyo.
I seem to remember the problem was where the oil pipe unions connect.If the pipe entry spigot is welded onto the cooler it should be ok.Some were friction fit,pushed in.
There were one or two threads on the subject,try the search option.
It takes a dealer around 30secs to check it,if you're worried. | 
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