2000 Pathfinder Front Suspension noise

Hello:

I have a 2000 Pathfinder 2WD 3.3motor with at least 90K miles. Almost 1 1/2 years ago a rattling noise started coming out of the fron t end of the vehicle. My mechanic suggested to replace the link bars of both left and right sides which I did and the noise was gone. No more than 5 months later the same noise came again and yet again the link bars were replaced and the noise was gone. After at least 6 mohts after the second link changed the noise came back this time only from the right side. That time I only replaced the right link with a Original Nissan Link instead of a replacement brand, the noise was gone. Now the noise is back again, this time from the left side, and yes it is the same noise. I dont know what to do becasue if something else I dont know is wrong i'll be replacing links all my life. I was wondering if you can assist me with my concern.

Thanks
Braulio