I apologize for the late reply on this thread. The brake booster from a 1st gen Tacoma (95 1/2 - 04) should be the same as the booster on your 3rd gen 4Runner, as I believe that they use the same master cylinder. However, I cannot verify this, as I have never tried to interchange them. I would recommend buying the correct booster for your application. You should be able to find this booster at your local auto parts store without any issues.