Parts for your 2013 Subaru Exiga-Oil pump

2013 Subaru Exiga oil pump – what it does, when to service it, and how to spot trouble

Technical sources confirm that an engine-driven oil pump is fitted to the 2013 Subaru Exiga. The Subaru Factory Service Manual (YA Exiga, 2013) under Engine Lubrication, and the Subaru FAST/Global Parts Catalogue both list the oil pump assembly for the EJ-series and FB-series petrol engines used in this model year. The pump is a crankshaft-driven gerotor unit located at the front of the engine (EJ: bolted to the block behind the crank pulley, FB: integrated behind the timing cover).

The oil pump is the heart of the Exiga’s lubrication system, pushing pressurised oil through galleries to crank and rod bearings, cam journals, AVCS/VVT components, and—on turbo variants—the turbocharger. It keeps a protective film between moving parts, carries heat away, and flushes out wear particles to the filter. A built-in pressure relief valve prevents overpressure at high rpm and cold starts.

It’s not a routine replacement item, but it absolutely depends on good servicing. Regular oil and filter changes with the correct spec oil keep the pump fed and happy. Monitoring the oil-pressure warning lamp and using a mechanical gauge if pressure is suspect are smart moves, especially on higher-kilometre cars. During front-end engine work, check for leaks at the front crank seal and the pump-to-block interface, and inspect the pickup and O-ring.

For EJ-equipped Exiga variants (timing-belt engines), the pump is readily accessible during timing belt service (typically somewhere in the 100,000–150,000 km window depending on market guidance). That’s the ideal time to:

• Inspect rotor and housing clearances against FSM limits and check the relief valve.
• Verify the backing-plate screws are tight, clean, apply thread locker, and torque correctly.
• Replace the front crank seal and pump O-ring, and use the specified anaerobic sealant on the mating face.
• Prime the pump with clean oil or assembly lube before refitting.

On FB-chain engines, access requires removing the front cover, so inspection or replacement is usually done only if oil-pressure issues or noise point that way.

If a replacement is needed, stick with a genuine or high-quality pump matched to the engine. EJ pumps come in different rotor widths, using a bigger turbo-spec pump on a naturally aspirated engine can increase aeration and isn’t a cure-all. After refit, crank with ignition/fuel disabled to build pressure, then verify hot idle and 2,000–5,000 rpm pressures against the FSM.

Warning signs that warrant attention include:

• Oil-pressure light flickering at hot idle or staying on longer at start-up
• Tappet/lifter tick, AVCS faults, or bearing rattle under load
• Metallic glitter in drained oil or filter, and rising engine temps

FAQs

Does the 2013 Subaru Exiga have an oil pump and where is it?
Yes. All 2013 Exiga petrol engines use a crank-driven gerotor oil pump. On EJ engines it’s bolted to the front of the block behind the crank pulley, on FB engines it sits behind the timing cover. Both are fed by a pickup in the sump and incorporate a pressure relief valve.

When should the oil pump be replaced on a 2013 Exiga?
It isn’t a scheduled replacement item. Replace or rebuild only if inspection shows out-of-spec clearances, scoring, a faulty relief valve, or if verified low oil pressure persists after ruling out oil grade, filter, pickup O-ring, and bearing wear. For EJ engines, inspection during timing belt service is sensible because access is easy then.

What oil pressure should be expected?
Expect roughly 100 kPa (around 14 psi) at hot idle and about 300–400 kPa (43–58 psi) by 5,000 rpm, depending on engine variant, temperature, and oil grade. Always confirm the exact specification for the engine code in the Subaru Factory Service Manual and measure with a mechanical gauge for accuracy.