Oil Cooler 95 Tacoma 3.4liter 4x4

I have had my Tacoma for over a year, great hunting/camp truck. I can go anywhere anytime, unlike a side by side UTV. I am experiencing a leak of coolant from what appears to the oil cooler. I found what the part number is for the cooler. The trouble I am having is plenty of Toyota sites are saying the part is discontinued. Not good! I did one source, questionable, that had the part for close to $500.00. I am looking for a replacement part or a work around for less than the $500.00 part plus labor to put it in. Thanks for the help!

 

Check www.car-part.Com

 

Thank you! Any suggestions for a work around? Seems oem is discontinued. Car-parts had one, called waiting on a reply