Parts for your 2005 Nissan Serena-Oil pump

2005 Nissan Serena oil pump — purpose, care and when to replace

Yes, the 2005 Nissan Serena uses an engine oil pump. Factory technical literature for the 2005 Serena (C25 and late C24) — specifically the Engine Mechanical and Lubrication System sections — details a crankshaft-driven trochoid/gerotor oil pump integrated into the front timing cover on the MR20DE and QR20DE petrol engines, and a similar pressure pump on the YD22DDTi diesel. These Nissan service manual sections confirm the oil pump is a standard, critical component on all 2005 Serena variants.

On this model, the oil pump’s job is to pull oil from the sump and push it under pressure through galleries to bearings, the timing chain, and valvetrain so everything stays lubricated and cool. It also controls pressure via a relief valve so seals don’t get hammered. Without healthy pressure, the engine will cop rapid wear — it’s that simple.

For most owners, the oil pump isn’t a scheduled replacement item