Parts for your 2010 Nissan Serena-Head gasket

2010 Nissan Serena head gasket — what it does and when to sort it

Per the Nissan Serena C25/C26 Factory Service Manual (Engine Mechanical — MR20DE) and Nissan’s Electronic Parts Catalogue (FAST), the 2010 Nissan Serena (late C25 and early C26, typically with the MR20DE 2.0‑litre petrol four) is built with a multi‑layer steel cylinder head gasket. So yes — a head gasket is absolutely relevant and used on this model.

The head gasket’s job is to seal the join between the engine block and the cylinder head, keeping combustion pressure in and oil and coolant in their own passages. On the Serena’s alloy‑head MR20DE, the MLS (multi‑layer steel) design handles heat cycles and pressure while maintaining a tight seal. When it’s healthy, the van runs smoothly, holds temperature, and uses minimal fluids.

Head gaskets aren’t a regular “service item”, but good servicing helps them live a long life. Keeping the cooling system in top nick is key: fresh coolant to spec, a radiator that flows well, hoses and cap that hold pressure, and a thermostat and water pump that do their job. Under the bonnet, watch for early warnings:

• Unexplained coolant loss or overheating, especially on hills or in traffic
• White exhaust steam after warm‑up, sweet coolant smell, or milky residue under the oil cap
• Rough cold starts, misfires, or bubbles in the radiator/overflow bottle

If replacement is needed, it’s a fair bit of labour, so it pays to do it once, do it right. The workshop should:

• Use a quality MLS gasket matched to the MR20DE and fit new head bolts (torque‑to‑yield are single‑use)
• Follow the factory torque sequence and angle specs from the Nissan manual
• Check head and block flatness