Parts for your 2009 Subaru Outback-Power steering pump

2009 Subaru Outback Power Steering Pump

Based on the Subaru Factory Service Manual for the BP/BL Legacy/Outback platform (MY2009 Steering section), Subaru’s Global Service Information (STIS), and OEM parts catalogues for the BP/BL series, the 2009 Subaru Outback is fitted with a belt‑driven hydraulic power steering pump. It’s a conventional vane‑type pump mounted on the engine and driven by the accessory belt, supplying pressurised fluid to the steering rack. So, yes—this part is absolutely relevant to a 2009 Outback.

The pump’s job is simple but crucial: make steering light and predictable at parking speeds and steady on the open road. By circulating ATF‑type fluid under pressure, it assists the steering rack so the driver doesn’t have to muscle the wheel, especially with larger tyres or a loaded wagon.

As for maintenance, it’s low‑effort but important. The factory specifies ATF for the power steering system (Dexron III equivalent per the FSM). In Aus/NZ, use Subaru-branded ATF or a high‑quality Dexron III compatible fluid and avoid mixing different types. Check the reservoir every service—look for correct level, clean red colour, and no burnt smell or foam. If the fluid is dark or contaminated, plan a fluid exchange.

• Inspect the accessory/drive belt for cracks or glazing and correct tension.
• Keep an eye out for dampness at hose crimps, the pump shaft seal, and the reservoir union.
• Listen for whining or groaning that changes with steering input.
• Address aeration (foamy fluid) quickly—often an ageing inlet O‑ring draws air.
• Consider a flush every 60,000–100,000 km if the fluid looks tired.

When replacing the pump, quality matters. Genuine or OE‑equivalent reman pumps tend to be quieter and last longer. Always renew the inlet O‑ring and any brittle hoses, fit a new belt if it’s worn, and clean out the reservoir screen. Bleeding is key: with the front wheels off the ground and engine off, turn the wheel lock‑to‑lock 10–15 times, top up, then start the engine and repeat until bubbles disappear and assist is smooth. Re‑check level after a short drive. Use the FSM for torque specs and routing details. A tidy, leak‑free system keeps steering light, protects the rack, and avoids annoying pump whine.

Popular questions

What fluid should be used in the 2009 Subaru Outback power steering system?
Subaru specifies ATF for the 2009 Outback’s power steering, typically a Dexron III equivalent per the factory manual. In Australia and New Zealand, Subaru ATF or a high‑quality Dexron III compatible ATF works well. Avoid universal “power steering fluid” unless it explicitly states ATF compatibility, and don’t mix different fluid types.

How do you bleed the power steering after replacing the pump?
Raise the front wheels, engine off, fill the reservoir to the mark, then turn the steering wheel slowly from lock to lock 10–15 times to purge air. Top up as needed. Start the engine and repeat until there are no bubbles and the assist is smooth and quiet. Recheck the level after a short drive and top up if required.

How long do these pumps last and what does replacement usually cost in Aus/NZ?
Many last 150,000–250,000 km, depending on fluid condition and belt health. In Australia or New Zealand, expect roughly AUD/NZD $350–$800 for a quality pump (OE/reman), plus 1–2 hours labour, fresh ATF, and possibly a new belt and hoses. Pricing varies with brand and workshop rates.