Parts for your 2016 Toyota Mark x-Head gasket

2016 Toyota Mark X head gasket — purpose, care, and when to replace

According to Toyota’s GRX130/GRX133 Mark X Repair Manual on Toyota TIS (Engine Mechanical — Cylinder Head and Cylinder Head Gasket procedures) and the Toyota Electronic Parts Catalog, both engines offered for the 2016 Mark X — the 4GR-FSE 2.5‑litre and 2GR-FSE 3.5‑litre V6 — are built with multi‑layer steel (MLS) head gaskets. The manuals detail removal/installation steps, torque‑angle tightening specs, and inspection of head/block flatness, confirming the head gasket is a fitted and relevant component on this vehicle.

On the 2016 Toyota Mark X, the head gasket lives between the alloy cylinder head and the block, sealing combustion pressures while keeping engine oil and coolant in their own passages. Being an MLS design, it’s engineered to cope with the V6’s thermal cycles and high cylinder pressures, maintaining compression and preventing cross‑leaks. When healthy, it helps the engine start crisply, run smoothly, and keep its fluids where they belong.

Head gaskets aren’t a scheduled service item