Those pipes in image are not hard to replace. Probably parts are inexpensive (DIY). If that was my car, I'd replace them.
They are your oil cooler water lines. Probably will have to drain coolant and refresh. So try to accomplish other things at same time.
https://www.nissanpartsdeal.com/part...;4=SPORT;5=6MT)
(***THIS PART NUMBER IS RANDOM MODEL*** SELECT YOUR VEHICLE MODEL TO GET EXACT PART****)