Fit Vehicles: 1999 Toyota 4Runner 2.7L 2000 Toyota 4Runner 3.4L 2000 Toyota Tacoma 3.4L 2000 Toyota Tundra 3.4L Features: Extensively Tested During Manufacture to Guarantee Quality and Reliability Supplied With a Factory-Fitted Connector for Easy Installation Precision manufactured with a sensing element incorporating premier technical ceramics Where are my oxygen sensors located? Diagnostic Trouble Codes (DTC) .
