Parts for your 2020 Nissan Pathfinder-Manifold gasket

2020 Nissan Pathfinder manifold gasket — purpose, service and replacement

Based on the Nissan factory service manual for the R52-series Pathfinder (2017–2020, EM and EX sections) and the Nissan parts catalogue for the VQ35DD engine, the 2020 Nissan Pathfinder is fitted with both intake manifold gaskets and exhaust manifold gaskets. These gaskets are absolutely relevant to the vehicle’s sealing and performance.

On the 2020 Pathfinder, the intake manifold gaskets seal the junctions between the upper plenum, lower intake runners and the cylinder heads, keeping unmetered air out so the engine management can maintain proper fuel trims. The exhaust manifold gaskets sit between the cylinder heads and the exhaust manifolds, preventing hot gas leaks that can cause noise, fumes in the cabin, oxygen-sensor confusion and heat damage to nearby components.

When these gaskets harden or compress over time, tiny leaks can crop up. Intake leaks tend to show up as rough idle, a whistle, higher fuel use or lean fault codes. Exhaust leaks often sound like a ticking on cold start, may leave sooty marks around the flange and can trigger O2 sensor and catalyst-efficiency dramas if ignored.

• There’s no set replacement interval in the factory schedule, they’re generally replaced when disturbed. Common touchpoints include spark plug service, injector or intake cleaning, and any exhaust manifold or stud work.
• If the upper intake must come off, have fresh plenum and runner gaskets ready. For exhaust-side jobs, new manifold gaskets and hardware (studs/nuts) are smart insurance against future leaks.
• Follow the manual’s torque specs and tightening sequence. Clean mating faces gently, don’t gouge alloy. Avoid sealant unless the service manual explicitly calls for it.
• After refit, a smoke test or a quick scan of short- and long‑term fuel trims is a neat way to confirm the intake side is sealing properly. Listen for any cold-start ticking from the exhaust side.

Quality matters here: a decent OEM-equivalent gasket set handles the heat cycles and vacuum loads of the VQ35DD without going brittle prematurely. While it’s a modest part, a fresh manifold-gasket can restore smooth idle, keep emissions in check and save the owner a lot of head-scratching when chasing weird drivability gremlins.

Popular questions about 2020 Nissan Pathfinder manifold-gasket

Does the 2020 Pathfinder have both intake and exhaust manifold gaskets?
Yes. The VQ35DD engine uses multiple intake manifold gaskets (plenum and runner interfaces) and exhaust manifold gaskets at each cylinder head. They’re standard fitment and shown in the Nissan service manual and parts listings.

What are the tell-tale signs a manifold gasket is leaking?
Intake-side leaks can cause rough idle, a whistling sound, higher fuel consumption and lean codes. Exhaust-side leaks often present as a ticking on cold start, a sharp exhaust note, faint exhaust odour in the bay and soot marks at the flange.

When should a manifold gasket be replaced on a Pathfinder?
They’re typically replaced when disturbed—during spark plug, injector or intake cleaning work, or any exhaust manifold repair. Replace immediately if there are leak symptoms or if the gasket surfaces look crushed, brittle or burnt.