Subaru Impreza Fuel Pump: Specs, Fitment & Common Faults

Confirmed: 2018-2020 model year Imprezas were part of a massive Denso fuel pump impeller recall affecting nearly 200,000 vehicles that can cause stalling — with an extended warranty of up to 15 years or 150,000 miles.

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OEM Part Numbers

Accuracy note: genuinely worth knowing: Impreza fuel pump part numbers vary by fuel type (petrol vs diesel) and sometimes by market, since fuel delivery pressure requirements differ — a pump correct for a diesel Impreza will not work on the petrol equivalent even where other parts are shared.

A Part That Fails at the Worst Possible Moments

Few component failures are as inconveniently timed as this one — it has a habit of stranding drivers mid-journey rather than giving a clean warning while the car is safely parked. Knowing the early signs buys valuable time to get it sorted before that happens.

Before you buy: fuel pump specifications vary by engine size and fuel type, and petrol/diesel versions are never interchangeable. Always confirm against your VIN before ordering.

What It Does

The fuel pump draws fuel from the tank and delivers it to the engine at the pressure required for proper combustion. Almost all modern versions sit inside the fuel tank itself, submerged in fuel, which is partly why access for replacement is more involved than the part's small size might suggest.

Generations & Engines: Fuel Pump Type

Accuracy note: these are documented patterns by generation and engine family, not a substitute for confirming your exact engine code — always verify against your V5C before ordering, since petrol and diesel pumps are never interchangeable.

2011–2013, 2.5L naturally-aspirated (SOHC)	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine
2011–2013, turbocharged variants (WRX/STI)	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine
2017–present, all engines	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine

Subaru Impreza Fuel Pump reference plate

Confirmed: A Genuine, Widespread Safety Recall Worth Checking Your Car Against — Subaru Impreza Fuel Pump

This is genuinely worth checking directly on your specific car: Denso-manufactured low-pressure fuel pumps have been recalled across nearly 200,000 vehicles spanning multiple Subaru models, including 2018-2020 model year Imprezas, addressing an impeller defect that can cause the fuel pump to fail and the engine to stall while driving. A related, separate confirmed UK recall also covers certain Foresters for the same underlying issue. It's genuinely worth checking your VIN against the official recall register directly.

A genuinely useful technical explanation worth knowing: the root cause is an impeller manufactured with lower density material than intended, which can deform and interfere with the body of the pump, and can also develop cracks if exposed to solvent-based cleaning or drying for extended periods. This affects specifically the in-tank low-pressure pump, not the separate engine-mounted high-pressure pump used on direct-injection variants.

It's also genuinely worth knowing that a class-action settlement in relation to this issue has provided an extended warranty specifically covering the fuel pump, reportedly up to 15 years or 150,000 miles on affected vehicles — worth asking a dealer directly whether this extended coverage applies to your specific car.

Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Fuel Pump Guide for symptoms to watch for (including the low-pressure vs high-pressure distinction on direct-injection engines), confirming fitment against your VIN, and OE suppliers worth knowing.

More Subaru Fuel Pump

The same part, covered across other Subaru models.

Subaru Impreza Fuel Pump: Specs, Fitment & Common Faults

OEM Part Numbers

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Confirmed: A Genuine, Widespread Safety Recall Worth Checking Your Car Against — Subaru Impreza Fuel Pump