Parts for your 2023 Subaru Outback-Manifold gasket

2023 Subaru Outback manifold gasket: what it does and when to replace it

Per Subaru technical sources – the Factory Service Manual for MY2023 Outback (FB25 2.5L and FA24 2.4L turbo) and the OEM parts catalogue – the 2023 Subaru Outback absolutely uses manifold gaskets. Both intake and exhaust manifolds are sealed with dedicated gaskets, so the part is relevant on every petrol Outback of this model year.

On this Outback, manifold gaskets do a quiet but critical job. Intake manifold gaskets keep unmetered air out so the engine can hold a stable idle, maintain correct fuel trims, and deliver smooth power. Exhaust manifold gaskets (multi-layer steel on late-model Subarus) seal hot gases at the cylinder head and, on turbo XT models, help the turbo spool efficiently while keeping fumes, heat, and noise under control. A healthy seal protects nearby components and sensors, and it saves fuel.

There’s no fixed replacement interval