Parts for your 2010 Nissan Pathfinder-Oil pump

2010 Nissan Pathfinder Oil Pump — What It Does and When to Service It

Yes, the 2010 Nissan Pathfinder is fitted with an engine oil pump. Technical references including the Nissan R51 (2010) Factory Service Manual (Engine Mechanical and Lubrication sections) for the VQ40DE petrol and YD25DDTi diesel list a crankshaft-driven trochoid/gerotor oil pump housed in the front cover. The Nissan electronic parts catalogue for R51 likewise lists complete oil pump assemblies and related seals for these engines. That makes the oil pump absolutely relevant to this model.

In this Pathfinder, the oil pump’s whole job is to keep pressurised oil flowing through the bearings, timing chains and valvetrain so everything stays cool and slippery. It draws oil from the sump, pushes it through the filter, and regulates pressure with an internal relief valve. Without it, the engine would seize in no time, so it’s a pretty important bit of kit.

While the pump itself isn’t a regular “replace at X kilometres” service item, looking after it is part of smart servicing. Fresh, correct-grade oil and a quality filter at the recommended intervals (often 10,000–15,000 km or 6–12 months in AU/NZ conditions, check the owner’s manual for your engine) will keep the pump happy. Sludge, poor-quality oil, or running low on oil are what really age a pump.

• Common warning signs: low oil pressure light, rattly timing chain on start-up, lifter/tappet tick, higher engine temps, or metallic glitter in the drained oil.
• Quick checks: verify oil level and grade, swap the oil filter if suspect, and confirm pressure with a mechanical gauge against the factory spec before blaming the pump.

If replacement is needed, it’s a front-cover job on these engines, so it’s often paired with timing chain/guides work or a front cover reseal. A competent tech will:

• Inspect and clean the pickup screen and replace the pickup O-ring.
• Prime the new pump with clean oil, check the pressure relief valve moves freely, and use fresh seals/RTV on the front cover per the service manual.
• Renew the crank seal and any disturbed gaskets, then confirm hot oil pressure with a gauge after refill.

Owners who keep up with oil and filter changes, stay with the specified viscosity for their climate, and act quickly on any low-pressure warnings will usually never need to touch the oil pump on a 2010 Pathfinder.

Popular questions about 2010 Nissan Pathfinder oil pump

Does the 2010 Pathfinder actually have an oil pump?
It does. Nissan’s 2010 R51 service documentation for both the VQ40DE petrol and YD25DDTi diesel specifies a crank-driven trochoid/gerotor oil pump in the front cover, and the Nissan parts catalogue lists the pump assembly and seals. It’s essential to engine lubrication and longevity.

When should the oil pump be replaced?
There’s no fixed interval. Replace it if verified oil pressure is below spec, the pump or relief valve is worn or stuck, the pickup is damaged, or the front cover is coming off for timing chain work and there’s evidence of wear. Always confirm pressure with a mechanical gauge before committing.

What are the signs of a failing oil pump?
Low oil pressure warning, chain rattle on cold start, ticking lifters, rising temps, or metal particles in the oil. Rule out low oil level, wrong viscosity and a clogged filter first, then test pressure against factory specs.