oil cooler

Titan LE 4x4 crew cab 5.6l gas Is there a place to buy a oil cooler that doesnt charge $400 to $500. I plan on changing the o ring and hoses first and see if the leak is still there. thanks ps still having a difficult time navigating the site so point me in the right direction if I am just "site...

I have a 2006 Titan with 58,000 miles, bought new. I planned to keep it a long time, but now having second thoughts due to problems: 56,000 miles - Both rear axle seals leaking -replaced under warranty. 58,000 miles - Transmission cooler line - replaced under warranty...