Parts for your 2013 Subaru Forester-Oil pump

2013 Subaru Forester oil pump — purpose, care and replacement tips

Technical sources confirm the 2013 Subaru Forester is fitted with an engine-driven oil pump. The Subaru Factory Service Manual for the 2013 Forester (Lubrication section: Oil Pump), Subaru’s Technical Information System workshop procedures, and Subaru parts catalogues for both FB25 (2.5-litre NA) and EJ255 (2.5-litre turbo, market-dependent) all show a gerotor/trochoid-style oil pump driven by the crankshaft. So yes—an oil pump is absolutely relevant on this model.

The oil pump on a 2013 Forester pushes pressurised engine oil through galleries to bearings, camshafts and AVCS hardware, keeping friction in check and temperatures under control. Without steady pressure, the big-end and main bearings can cop a hiding in seconds. On FB25 engines, the pump is integrated into the front cover and driven directly off the crank. On EJ255 turbo variants, it’s a bolt-on unit behind the timing belt cover. Different layouts, same job: feed the engine a constant flow of clean oil.

As part of regular servicing, the smartest move is to protect the pump by looking after the oil system as a whole:

• Stick to the service schedule and the viscosity specified in the owner’s manual. Fresh, correct-grade oil and a quality filter help the pump hold pressure and reduce wear.
• Keep the oil level right—check it between services, especially before long trips. Low oil can cause pressure drop and aeration.
• If the sump’s ever off, inspect and replace the pickup O-ring and check the pickup screen for sludge or silicone debris.

When there are signs of trouble—oil pressure warning lamp flicker, top-end clatter on hot idle, or confirmed low pressure on a mechanical gauge—further checks are warranted. On EJ255 engines, replacement usually involves timing belt removal and swapping the pump body, renewing the pump-to-block O-ring, and priming the pump with clean oil before start-up. On FB25 engines, the front cover has to come off