Parts for your 2020 Nissan Serena-Manifold gasket

2020 Nissan Serena manifold gasket — what it does and when to replace it

Based on the Nissan C27 Serena Service Manual (engine EM/EX sections) and the Nissan FAST electronic parts catalogue, the 2020 Nissan Serena is fitted with manifold gaskets. Both the 2.0-litre MR-series petrol (S-HYBRID) and the e-POWER variant’s HR-series petrol engine (used as a generator) use intake manifold gaskets and exhaust manifold gaskets, along with related seals for throttle and EGR interfaces. These are standard wear-and-seal components in the Serena’s engine architecture, not optional extras.

On this model, the manifold gasket’s job is simple but critical: keep air, exhaust, and coolant (where passages exist) separated and sealed so the engine breathes properly and emissions systems do their thing. The intake manifold gasket prevents unmetered air sneaking in and upsetting fuel trims, while the exhaust manifold gasket keeps hot gases inside the manifold so the oxygen sensors and catalytic converter see clean, predictable flow. When these gaskets go hard or shrink from heat cycles, leaks can creep in and the Serena may idle rough, feel a bit sluggish, drink more fuel, or light the check engine lamp.

There’s no fixed service interval for manifold gaskets, but they’re worth a look during bigger services, especially if there’s a whiff of exhaust under the bonnet, a ticking noise on cold start, or long-term fuel trim codes. On higher-kilometre cars or those that have seen lots of short trips, heat cycling can accelerate ageing, particularly on the exhaust side.

Replacement is a straightforward, professional workshop job. Best practice is to:

• Use new OEM-quality gaskets and replace any single-use nuts, studs, and crush washers.
• Clean mating surfaces thoroughly