Parts for your 2019 Subaru Impreza-Fuel pump

2019 Subaru Impreza Fuel Pump

Yes, a fuel pump is absolutely used on the 2019 Subaru Impreza. Technical references including Subaru’s service information (STIS), the 2019 Impreza service manual sections on Fuel Injection, and dealer parts catalogues confirm the model uses an in-tank electric low‑pressure fuel pump. On the FB20 direct‑injection engine fitted to 2019 Impreza models, there’s also an engine‑mounted high‑pressure fuel pump (HPFP). Factory recall bulletins issued globally for the Denso low‑pressure pump impeller on certain 2019 Subarus further underline that a fuel pump is part of this vehicle’s fuel system.

What does it do? The in‑tank pump lifts petrol from the tank and feeds it under steady pressure to the engine. On direct‑injection Imprezas, that low‑pressure supply then feeds the HPFP, which ramps pressure up dramatically for precise injection. Together, they keep the engine starting crisply, idling smoothly, and pulling cleanly through the revs.

There’s no scheduled replacement for the fuel pump on this model, but smart servicing pays off. A workshop will typically check for stored fault codes, listen for an overly loud whine from the tank, verify commanded vs. actual fuel pressure with a scan tool or gauge, and inspect for leaks or a perished tank seal. The filter/strainer is integrated into the in‑tank module on most trims, so it’s not a routine service item.

• Good habits: avoid running the tank near empty, use quality 91–98 RON fuel, and keep to regular service intervals so any early signs are caught.
• When to replace: hard starting, hesitation under load, surging, stalling when hot, a loud pump prime, low fuel‑pressure readings, or relevant fault codes (e.g., lean condition or fuel pressure performance).

Replacement tips a tech will follow: depressurise the system, disconnect the battery, lift the rear seat to access the tank module, replace the sealing O‑ring, torque the lock ring correctly, and prime the system before starting. For DI models, they’ll also inspect the HPFP and lines for noise or metal debris if there’s been a starvation event. Where applicable, they’ll check the VIN for any outstanding factory campaigns relating to the low‑pressure pump impeller and complete those first.

• Does the 2019 Impreza have one or two fuel pumps?
  Most 2019 Imprezas with the FB20 direct‑injection engine run two: an in‑tank electric low‑pressure pump and an engine‑mounted high‑pressure pump. The in‑tank unit supplies fuel from the tank