Parts for your 2009 Nissan Pathfinder-Oil pump

2009 Nissan Pathfinder Oil Pump — Purpose, Service Tips, and When to Replace

Based on Nissan’s 2009 Pathfinder (R51) Factory Service Manual — LC (Lubrication System) sections for VQ40DE (4.0 V6), VK56DE (5.6 V8) and YD25DDTi (2.5 turbo-diesel), plus the Nissan parts catalogue that lists the oil pump/front cover assembly, this model is definitely fitted with an engine oil pump. It’s a crankshaft-driven trochoid/gerotor pump housed in the front cover, and it’s essential to engine life.

For the 2009 Pathfinder, the oil pump’s job is simple but critical: pull oil from the sump, pressurise it, and push it through galleries to bearings, timing chains and guides, cam phasers (on petrol engines), and piston cooling jets (on diesel). Without healthy oil pressure, bearings wear fast, timing chains rattle, and the engine’s done for. The Factory Service Manual details inspection and pressure checks, but day to day, regular servicing is what keeps the pump happy.

There’s no routine replacement interval for the pump