Parts for your 2019 Nissan Pathfinder-Head gasket

2019 Nissan Pathfinder head gasket: what it does and when to replace it

Technical references such as the Nissan Factory Service Manual (R52, 2019 – Engine Mechanical section) and Nissan’s parts catalogue list a dedicated cylinder head gasket for the 3.5‑litre VQ35 engine used in this model—one gasket per cylinder head—so the 2019 Nissan Pathfinder is definitely fitted with head gaskets.

On this V6, the head gasket seals the join between the aluminium cylinder heads and the engine block. It keeps combustion pressure where it belongs, stops coolant and engine oil from mixing, and prevents external leaks. In day‑to‑day driving that means stable temps, consistent power, and clean oil. It’s a multi‑layer steel (MLS) design engineered to handle the VQ35’s heat cycles and pressure, provided the cooling system is healthy and the engine isn’t overheated.

A head gasket isn’t a routine service item, but it relies on good maintenance. Keeping the cooling system spot‑on—fresh genuine Nissan Long Life Blue coolant at the specified interval, a cap that holds pressure, and fans and thermostats behaving—goes a long way to preserving the seal. Overheating is the big enemy