Parts for your 2003 Toyota Highlander-Oil pump

2003 Toyota Highlander (Kluger) oil pump — purpose, service and replacement

Technical sources such as the Toyota Repair Manual for the 2003 Highlander/Kluger (Engine Mechanical – Oil Pump) and Toyota’s Electronic Parts Catalogue confirm that both engines offered that year — the 2.4‑litre 2AZ‑FE four-cylinder and the 3.0‑litre 1MZ‑FE V6 — are fitted with a trochoid/gerotor oil pump. On the 2AZ‑FE it’s chain-driven as part of the balance shaft assembly