Parts for your 2018 Honda Odyssey-Head gasket

2018 Honda Odyssey head gasket: what it does and when to sort it

Yes, the 2018 Honda Odyssey absolutely uses a head gasket. Technical documentation including the 2018 Odyssey Engine section of Honda’s factory Service Manual and the Honda Electronic Parts Catalogue list a cylinder head gasket for the 3.5‑litre J‑Series V6, along with the bolt torque/sequence and replacement procedure. Those sources make it clear this is a conventional aluminium block and head design that relies on a multi‑layer steel (MLS) head gasket to seal combustion, coolant and oil passages.

On this model, the head gasket lives between the cylinder head and engine block, doing the hard yards of containing high combustion pressures while keeping coolant and engine oil in their own lanes. A good MLS gasket, clamped by correctly torqued cylinder head bolts, maintains that seal through thousands of heat cycles. It’s not a routine service item