Parts for your 2006 Nissan Serena-Oil pump

2006 Nissan Serena oil-pump — what it does and how to look after it

It is relevant and fitted. Technical sources including the Nissan Serena C25 Factory Service Manual (LU – Lubrication System for MR20DE) and the Nissan electronic parts catalogue for C25 models confirm the 2006 Serena uses an engine-driven oil pump. The MR20DE petrol engine employs a chain/crank-driven trochoid (gerotor) pump integrated with the front cover and relief valve, while markets that received the QR20DE petrol or the M9R diesel also specify an engine-mounted pressure pump in their workshop manuals. So the oil-pump is absolutely part of the 2006 Serena’s lubrication system.

The oil-pump’s whole job is to push the right amount of oil, at the right pressure, to the bearings, camshafts, timing chain and variable valve timing hardware. That oil carries away heat, reduces wear, and keeps the Serena’s engine happy on cold starts and long motorway runs alike. Without solid oil pressure, bearings can score, chains rattle, and the engine can seize in short order.

On the 2006 Serena, the pump is a robust gerotor unit driven off the crankshaft, bathing the galleries and regulating pressure with a built-in relief. It isn’t a routine replacement item