Parts for your 2014 Toyota Mark x-Manifold gasket

2014 Toyota Mark X manifold gasket — purpose, servicing and when to replace

Yes, a manifold gasket is used on the 2014 Toyota Mark X. Both the 4GR-FSE 2.5‑litre and 2GR-FSE 3.5‑litre V6 engines are built with intake manifold gaskets and exhaust manifold gaskets, along with related plenum and throttle body gaskets. This is confirmed by the Toyota Electronic Parts Catalog for the GRX130/135 series and by procedures in the Toyota Repair Manual, which specify renewing manifold gaskets whenever the intake or exhaust manifold is removed.

On this Mark X, the manifold gasket’s job is to seal the mating surfaces so the engine breathes and expels gases exactly as designed. On the intake side, it prevents unmetered air sneaking in, which would cause a lean condition, rough idle and fault codes. Because the GR-series V6 uses Toyota’s D-4S system (direct plus port injection), intake sealing is especially important for smooth idle quality and proper fuel trims. On the exhaust side, the gasket stops hot gases and noise leaking at the ports, protects oxygen sensor readings and helps the catalytic converters last longer.

Owners typically won’t replace a manifold gasket on a schedule