This is the original equipment manufacturer’s part and fit my 2nd Gen 2008 Tacoma 4.0 perfectly. Odds are, if your replacing this harness mice have chewed your wires. This harness can be replaced without pulling the heads. It takes some finessing but I got it done using the steps in a guys video on YouTube. Search on YouTube- “how to fix Toyota Tacoma check engine light P0333 bank sensor 2 rodent damage” author: cheezr323... Also replace the intake manifold and plenum gaskets on reassembly and on the new harness knock sensor connectors tape the gap between the connectors and wire protective sheath as the wires are totally exposed there. 1st photo is new harness reinforced w electrical tape, 2nd photo is mouse damage on old harness just before connector where the wires are exposed. Hope this helps! God Bless ✝️ -