Parts for your 2000 Nissan Navara-Oil pump

2000 Nissan Navara Oil Pump – What it does, why it matters, and how to look after it

Yes, the 2000 Nissan Navara uses an engine oil pump. Technical sources including the Nissan D22 Factory Service Manual (1997–2001, EM section: Lubrication System), the Nissan FAST electronic parts catalogue for D22, and common workshop manuals covering KA24 petrol and TD27/QD32/ZD30 diesel variants all specify a crankshaft-driven trochoid/gear-type oil pump fitted to these engines. It’s a core part of the lubrication system, not an optional extra.

On a 2000 Navara, the oil pump’s job is to pull engine oil from the sump and push it under pressure through galleries to bearings, camshafts, and the turbo (on turbo-diesels). This oil film stops metal-on-metal contact, carries heat away, and sweeps out contaminants to the filter. Without steady oil pressure, bearings score, cams wear, and the engine can seize in short order. Most D22 pumps are mounted at the front of the block or integrated with the timing cover and are driven directly by the crank, so they deliver pressure that scales with engine speed.

As part of regular servicing, the smartest “maintenance” for the pump is preventative: keep clean oil of the right spec in it, change filters on time, and don’t ignore oil warning lights. If the engine’s done big kilometres, has low hot idle pressure, or you’re rebuilding, inspect the pump’s clearances, rotor/gear faces, and the pressure relief valve. Replacement is often recommended during full overhauls because the pump lives a hard life and wear is cheap insurance to sort while the front cover is off. When fitting a new or reconditioned pump, always prime it with clean oil, use new seals/O-rings, check the pickup and strainer for cracks or blockage, and verify pressure with a mechanical gauge after first start.

• Watch for symptoms: oil light flicker at hot idle, noisy lifters, rumbling bearings, or sudden drops in gauge pressure.
• Use correct oil grade for your engine and climate