Parts for your 2014 Subaru Xv-Manifold gasket

2014 Subaru XV manifold gasket — what it does and when to replace it

Per Subaru’s Factory Service Manual for the GP-series XV (FB20 engine, Intake and Exhaust sections) and Subaru’s FAST parts catalogue for GP7, the 2014 Subaru XV is fitted with manifold gaskets. There are intake manifold gaskets sealing the manifold to the cylinder heads, and exhaust manifold gaskets sealing the headers to the heads. So, yes — a manifold gasket is absolutely relevant on this model.

On the XV’s 2.0‑litre FB20, the manifold gaskets are there to keep things sealed under heat, vibration and pressure. Intake gaskets prevent unmetered air sneaking in, which would upset the air–fuel mix, idle quality and fuel trims. Exhaust manifold gaskets keep hot gases inside the system so the O2 sensors and catalytic converter receive accurate, stable flow. Subaru uses robust multi‑layer steel or moulded rubber/metal composite gaskets here because they cope well with thermal cycling and the boxer engine’s unique resonance.

Typical clues a manifold gasket is on the way out include:

• Hissing (intake) or a sharp ticking (exhaust) from under the bonnet, especially cold.
• Rough idle, hesitation, or higher long‑term fuel trims