Parts for your 2012 Nissan Pathfinder-Oil pump

2012 Nissan Pathfinder oil pump – what it does, servicing tips, and when to replace

Technical sources confirm that the 2012 Nissan Pathfinder is fitted with an engine oil pump and relies on it for pressure lubrication. The Nissan R51 Pathfinder Factory Service Manual (2012) — Lubrication (LU) and Engine Mechanical (EM) sections — details a crankshaft-driven trochoid/gerotor oil pump integrated into the front timing cover on both the VQ40DE 4.0‑litre petrol and YD25DDTi 2.5‑litre diesel engines. The Nissan FAST/parts catalogue lists the oil pump/front cover assembly and service components, and general procedures are also described in the Haynes Frontier/Pathfinder/Xterra manual covering these engines. So yes, the oil pump is absolutely relevant and used on the 2012 Pathfinder.

On this model, the oil pump’s whole job is to push the right amount of oil to bearings, camshafts, timing chains and guides, keeping friction down, temps in check, and muck carried away to the filter. Without steady oil pressure, these engines won’t last long — which is why a healthy pump and clean oil are non‑negotiable.

As part of routine servicing, it’s smart to keep the pump happy rather than wait for drama. Sticking to the recommended oil and filter changes (many owners in Australia and New Zealand aim for roughly every 10,000 km or 6 months, or as per the logbook) is the single biggest life‑saver. Use the correct grade and spec oil for your engine and climate, and a quality filter that won’t collapse or bypass too early.

If the pump ever needs replacement, it’s not a quick driveway job. On both engines the pump sits in the front cover and is driven by the crank, so the front of the engine needs to come apart. Most workshops will treat it as a half‑day to full‑day task depending on model and condition. Best practices include:

• Inspecting and cleaning the pickup and its screen