Parts for your 2019 Subaru Impreza-Manifold gasket

2019 Subaru Impreza manifold gasket — what it does, why it matters, and when to replace it

Based on Subaru’s own technical documentation — including the 2019MY Impreza FB20 engine service manual (Intake and Exhaust sections), the Subaru Technical Information System (STIS), and the Subaru FAST genuine parts catalogue — the 2019 Subaru Impreza is fitted with manifold gaskets. It uses intake manifold gaskets between the intake manifold and each cylinder head, and exhaust manifold gaskets where the exhaust header meets the heads. So yes, a manifold gasket is absolutely relevant on this model.

On the 2019 Impreza, the manifold gasket’s job is to keep the engine airtight where it matters most. Intake manifold gaskets seal the air and fuel path so the engine management can meter airflow precisely. Exhaust manifold gaskets keep hot gases from sneaking out before they hit the catalytic converters. When these seals are healthy, the engine runs smoothly, fuel trims stay tidy, and emissions remain compliant.

There’s no fixed service interval for manifold gaskets, but they should be inspected whenever related work is done. Intake gaskets on the FB20 are typically a moulded rubber/metal design and should be replaced if the manifold is removed or if there’s any sign of hardening, flattening, or damage. Exhaust gaskets are crush-type or multi-layer steel