Parts for your 2016 Toyota Mark x-Manifold gasket

2016 Toyota Mark X manifold-gasket — what it does and when to sort it

Technical sources including the Toyota Repair Manual for GRX130/133 chassis, the Toyota Electronic Parts Catalogue (EPC), and mainstream gasket catalogues for the 4GR‑FSE and 2GR‑FSE engines confirm that the 2016 Toyota Mark X uses both intake manifold gaskets and exhaust manifold gaskets. So yes, a manifold-gasket is absolutely relevant on this model.

On the Mark X’s V6, the manifold-gasket seals the joints where the intake manifold meets the cylinder heads (keeping unmetered air out) and where the exhaust manifolds bolt to the heads (keeping hot exhaust gases in). On the intake side, modern composite manifolds use moulded rubber or elastomeric port seals to prevent vacuum leaks that can cause rough idle, hesitation, and lean running. On the exhaust side, multi‑layer steel gaskets handle heat and pressure, stopping tick noises on cold start, fumes under the bonnet, and potential O2 sensor skew.

As part of regular servicing, the manifold-gasket doesn’t have a strict kilometre interval, but it pays to keep an ear and nose out, especially as KMs climb or after any top‑end work. If the intake has been off for spark plugs, injector service, or carbon clean, the intake manifold-gaskets should be renewed rather than reused. For the exhaust side, fresh gaskets are a must whenever manifolds are removed, and any tired studs or copper nuts should be replaced at the same time.

• Watch for symptoms: whistling or hissing at idle, surging, fuel trims out of whack, a soot mark at a flange, or a ticking exhaust note when cold.
• Check vacuum hoses and PCV plumbing when the intake’s off