Parts for your 2004 Toyota Highlander-Oil pump

2004 Toyota Highlander (Kluger): Oil pump purpose and service tips

Yes, the 2004 Toyota Highlander (sold as the Kluger in Australia and New Zealand) absolutely uses an engine oil pump. Both the 2.4L 2AZ‑FE four-cylinder and the 3.3L 3MZ‑FE V6 are factory-fitted with a trochoid-style pump driven directly by the crankshaft. This is detailed in Toyota’s Repair Manual (Engine Mechanical, Lubrication System sections for 2AZ‑FE and 3MZ‑FE) and the Toyota New Car Features documents covering these engines, which describe the pump, pressure relief valve, pick-up screen and oil galleries that supply bearings, camshafts and the VVT‑i system.

The oil pump’s whole job is to circulate clean oil at the right pressure through the engine so every moving bit—crank bearings, rods, cams and the VVT‑i actuators—stays lubricated and cooled. On these Highlander/Kluger engines, proper oil pressure is especially important for VVT‑i timing control, cold-start protection and overall longevity.

As for maintenance, the pump itself isn’t a scheduled service item, but looking after it is all about keeping the oil clean and the pick-up free of sludge. Stick to regular oil and filter changes with the correct grade (typically 5W‑30 meeting the spec listed in the owner’s handbook