Parts for your 2009 Subaru Forester-Oil pump

2009 Subaru Forester Oil Pump — Purpose, Service Tips and When to Replace

Yes, the 2009 Subaru Forester is fitted with an engine oil pump. Technical references including the Subaru Factory Service Manual for MY09 Forester (Lubrication section) and the Subaru Genuine Parts Catalogue list a crankshaft-driven trochoid (gerotor) oil pump mounted at the front of the EJ25 engine, behind the crank pulley. Independent workshop guides for EJ-series engines describe the same design and service procedure, confirming the pump’s presence and role in the vehicle.

The oil pump’s job is simple but critical: it pressurises and circulates engine oil to bearings, camshafts and variable valve timing components, keeping friction down and heat under control. On the 2009 Forester’s flat-four, the pump takes oil from the sump, pushes it through the filter, then feeds the galleries so the engine stays happy whether it’s idling in traffic or heading off on a long Kiwi or Aussie road trip.

There’s no routine “swap it out at X kilometres” rule for these pumps. Instead, owners should keep to the vehicle’s service schedule (oil and filter changes with the correct spec oil) and use oil pressure warning lights and noises as prompts to check things sooner. A flickering oil light at hot idle, rattly top-end on start-up, or fresh oil mist around the front of the engine can signal a pump, seal or relief valve concern that deserves attention under the bonnet.

Because the pump sits behind the crank pulley and timing belt covers, inspection or replacement is most convenient when the timing belt is off. Many workshops in Australia and New Zealand will:

• Inspect the pump body for scoring and the rotor for wear.
• Renew the pump-to-block sealant and the front crankshaft seal if there’s any weep.
• Check the pressure relief valve moves freely and the cover screws are secure.
• Prime the pump with clean oil or assembly lube before reassembly.

If a replacement is needed, a quality OEM-spec pump and fresh seals are the go. Proper torqueing, correct sealant application and careful timing belt re-fit are essential. Given the high crank bolt torque and the need for accurate belt timing, this is typically a professional job, though a confident home mechanic with the right tools and a service manual can handle it.

Does a 2009 Subaru Forester have an oil pump?

It does. Subaru’s workshop literature for the MY09 Forester (EJ25) specifies a crank-driven trochoid oil pump mounted behind the crank pulley, and the parts catalogue lists the complete pump assembly and related seals.

When should the oil pump be replaced on a 2009 Forester?

There’s no fixed interval. Replacement is considered if there’s low oil pressure, internal wear, a stuck relief valve, or persistent front-end oil leaks. Many technicians assess the pump during timing belt service because access is already open.

What are the signs of a failing oil pump on the EJ25?

Common signs include a flickering oil warning light at hot idle, noisy starts, bearing rumble, and fresh oil leaks near the crank pulley area. Proper diagnosis includes oil pressure testing and a careful inspection under the timing covers.