Parts for your 2006 Subaru Impreza-Power steering hose

2006 Subaru Impreza Power-Steering Hose: What It Does and When to Replace It

Yes, a power-steering hose is absolutely used on the 2006 Subaru Impreza. Technical sources including the Subaru Factory Service Manual for MY2006 Impreza (Steering section), Subaru’s genuine parts diagrams for “Hose & Pipe – Power Steering” on the GD/GG chassis, and major aftermarket catalogues (e.g., Gates and Dayco listings for 2006 Impreza pressure and return hoses) all confirm the hydraulic power-steering setup and its pressure and return hoses on both WRX and non-turbo models.

On this model, the power-steering hose set carries and returns hydraulic fluid between the pump, reservoir and steering rack. The high-pressure hose handles pump output to the rack under serious pressure, while the return hose brings fluid back to the reservoir at low pressure. Together, they let the hydraulic system deliver that easy, one-finger steer feel around town and keep feedback consistent on the open road.

Over time, heat, vibration and age can harden rubber, fatigue crimps and weep at fittings. Common signs the hose is due are a steering whine when cold, groaning at parking speeds, red or brown ATF marks under the car, a low fluid level, or heavier-than-usual steering. Because the 2006 Impreza uses ATF as power-steering fluid, any leak not only makes a mess but can starve the pump or drip onto the drive belt, causing squeal and extra wear.

• Use the correct fluid: Dexron III–spec ATF (or as printed on the reservoir cap/owner’s manual).
• Inspect every service: look for damp crimps, cracked rubber, and perished clamps—especially near the pump banjo and rack connections.
• Replace sealing washers: the high-pressure banjo connection needs new copper/aluminium washers every time. Tighten to factory torque per the FSM.
• Bleed properly: front wheels off the ground, engine off, turn lock-to-lock slowly to purge air, top up, then start and re-check for bubbles and leaks.

If a hose shows any weeping at the crimp, swollen sections, or soft spots, replace it sooner rather than later. Go for a quality assembly rated for the Impreza’s working pressures, right-hand-drive cars in Australia and New Zealand may have routing and part-number differences versus LHD, so match by VIN. After fitting, clean any spilled ATF, recheck the belt for contamination, and confirm the fluid sits on the correct mark once warmed. A preventative fluid refresh every few years helps the new hose live longer and keeps the pump and rack happy.

Popular questions about 2006 Subaru Impreza power-steering hose

Which fluid should be used in the 2006 Impreza’s power steering?
Subaru specifies ATF for the 2006 hydraulic system—typically Dexron III–spec. Check the reservoir cap and owner’s handbook for the exact call-out. Avoid generic “power steering fluid” that isn’t ATF-compatible, as it can aerate or attack seals.

How do you bleed the system after replacing a hose?
With the front wheels off the ground and engine off, fill to the cold mark and turn the wheel slowly from lock to lock several times. Top up as bubbles purge. Then start the engine briefly, recheck the level, and repeat until the fluid is clear and quiet with no foam. Don’t hold full lock for more than a couple of seconds.

Can driving with a leaking hose damage the pump or rack?
It can. Low fluid causes the pump to cavitate, which scores internals and sends debris through the rack. If the leak is at a crimp or banjo, it often worsens quickly. If there’s visible leakage or a growing whine, park it, top up if safe to do so, and sort the hose promptly.