Parts for your 2010 Mazda Cx-9-Oil pump

2010 Mazda CX-9 oil pump: what it does, and when to service or replace it

Technical sources confirm the 2010 Mazda CX-9 is fitted with an engine oil pump. The Mazda Workshop Manual for the CX-9 (Lubrication System section) and the Mazda illustrated parts catalogue both show a gerotor-type oil pump mounted in the front cover and driven directly by the crankshaft on the 3.7‑litre MZI V6. In other words, the oil pump is absolutely relevant to this model.

On this engine, the oil pump’s job is straightforward but critical: it pulls oil from the sump via the pickup, builds pressure, and feeds that oil through galleries to bearings, camshafts, timing chains, and hydraulic control components. Consistent pressure keeps friction down, manages heat, and prevents metal‑to‑metal contact, which is why a healthy pump and clean oil are key to long engine life.

Servicing-wise, there’s no scheduled replacement interval for the pump itself