Parts for your 2017 Nissan Pathfinder-Oil pump

2017 Nissan Pathfinder Oil Pump

The 2017 Nissan Pathfinder (R52, VQ35DD 3.5‑litre V6) is fitted with an engine oil pump. This is documented in Nissan’s Factory Service Manual for the Pathfinder (sections LU—Lubrication System and EM—Engine Mechanical), and reflected in Nissan parts catalogues where the oil pump is integrated with the front timing cover assembly.

On this model, the oil pump’s job is straightforward but critical: it draws oil from the sump through the pickup and pressurises it through the galleries to the crankshaft, bearings, camshafts, timing chains and variable valve timing components. It’s a crankshaft-driven internal gear (gerotor/trochoid) pump built into the front cover, which means it runs any time the engine is turning. Without the pump keeping a steady flow, friction and heat rise rapidly—so healthy oil pressure is non‑negotiable for engine longevity.

As part of routine servicing, most owners won’t ever “service” the pump itself. Instead, they protect it by sticking to proper oil and filter changes and watching for warning signs. Use the grade specified in the owner’s manual for local climate (commonly 0W‑20 or 5W‑30 full‑synthetic in AU/NZ), and change oil at the recommended intervals (often around 10,000 km or 12 months). Clean, correct‑viscosity oil helps the pump maintain pressure and reduces wear on its rotors and the pressure relief system.

If the low oil pressure lamp flickers, there’s valvetrain rattle on start‑up, or there are DTCs such as oil pressure sensor faults, don’t keep driving. First check the oil level and condition. A blocked pickup strainer, failing pressure sensor, or worn bearings can mimic pump issues, so a mechanical gauge test is the go-to to confirm actual pressure before condemning the pump.

Replacement is not a casual driveway job. Because the pump is integral with the front cover and driven off the crank, replacement usually involves removing the crank pulley, front cover, timing components, and dropping the sump to access the pickup and seals. Expect several hours’ labour, new seals/RTV, and a fresh crank bolt. A good workshop will pre‑lube the pump, prime the system, and disable ignition to crank for oil pressure on first start, then verify with a gauge and scan data. If you’re already in there for timing chain or front cover reseal work, that’s the ideal time to inspect the pump rotors and the pickup O‑ring and replace as needed.

• Watch for leaks at the front cover and oil cooler area.
• Use quality filters with proper anti‑drainback valves.
• Address any oil pressure warnings immediately to avoid bearing damage.

Popular questions about 2017 Nissan Pathfinder oil pumps

How long does the oil pump typically last?
With regular oil changes and the correct viscosity, the factory pump can last the life of the engine. Most replacements happen due to contamination (sludge/metal), neglected maintenance, or during major front cover/timing work. If pressure is good and there’s no noise or debris, there’s usually no need to replace it pre‑emptively.

What are the common signs of a failing oil pump on an R52 Pathfinder?
The classic clues are a low oil pressure lamp, top‑end ticking or chain rattle on start‑up, and fault codes related to oil pressure. However, a faulty pressure sensor, thin/old oil, or a clogged pickup can mimic the same symptoms. Always confirm with a mechanical pressure test before replacing the pump.

Do you need to prime the oil pump after replacement?
Yes. The pump and pickup should be pre‑lubed during assembly, and the engine should be cranked with ignition disabled to build pressure before first fire‑up. After start, verify pressure on a gauge and check for leaks. Skipping priming risks a dry start and bearing scuffing.