Parts for your 2018 Nissan Serena-Oil pump

2018 Nissan Serena oil pump – purpose, care and when to sort it

Technical sources confirm the 2018 Nissan Serena does use an engine oil pump. The Nissan C27 Serena Electronic Service Manual (ESM) for the MR20DD petrol and the HR12-series engine used in e-POWER lists a crank-driven, trochoid-type oil pump integrated into the front cover within the Lubrication System (LU) section. Nissan’s FAST parts catalogue for C27 (Group 150 – Engine Lubrication) also lists an Oil Pump Assembly for these engines. So the oil pump is absolutely relevant on the 2018 Serena.

On this model, the oil pump’s job is to pull oil from the sump and push it under pressure through the filter, galleries and out to the bearings, camshafts, timing gear and the variable valve timing hardware. Without it, the Serena’s smooth, family-friendly manners would be out the window in seconds. Because it’s driven off the crank, it responds directly to engine speed, keeping pressure where it needs to be as revs climb.

For everyday servicing, the best way to look after the oil pump is to look after the oil. Stick to the Nissan-recommended grade and service schedule in the handbook, use a quality filter, and don’t stretch intervals—especially if the van does lots of short trips, towing, or stop–start work. Clean, correctly weighted oil prevents varnish, sludge and wear that can stick the pump’s pressure relief valve or starve the pickup screen.

• Watch for warning signs: red oil pressure light, rattly starts after an oil change, persistent ticking from the top end, VVT faults, or metallic glitter in drained oil.
• If the sump has been off or the pump replaced, prime the pump with clean oil and verify pressure with a mechanical gauge on first start.
• If the front cover is coming off for timing-chain work, assess the pump and pickup O-ring, replacement then can save doing the job twice.

Actual oil pump failures on these engines are uncommon, low pressure is more often caused by low oil level, the wrong viscosity, a clogged pickup, or excessive bearing clearances. If diagnostics (pressure test, inspection of the pickup and relief valve) point to the pump, fit a quality unit with fresh seals and follow torque/sealant specs from the ESM. A trusted workshop will also check for underlying wear so the new pump isn’t masking a bigger problem.

Keep on top of oil quality and the Serena’s pump should quietly get on with its job for the life of the vehicle.

Popular questions about the 2018 Nissan Serena oil pump

Does the Serena’s oil pump need regular replacement?
Not typically. It’s a long-life component. Replace it only if verified oil pressure issues point to the pump, or proactively when the front cover is off for major work and there’s measurable wear. Good oil and timely services go further than any preventative pump swap.

What are common signs the oil pump or lubrication system needs attention?
The oil pressure warning light, noisy top-end on cold start that doesn’t settle, VVT errors, or low pressure confirmed with a gauge are key flags. Also, if the sump pickup screen is sludged or you find metallic particles in the oil, stop driving and have it inspected.

What service habits protect the oil pump on a Serena?
Use the handbook-specified oil grade, a reputable filter, and follow Nissan’s interval guidance. Many owners in Australia and New Zealand service every 10,000–15,000 km or 12 months, adjusting for harsh use. Avoid long idling and frequent short runs where possible, and always check level after filter and oil changes.