Parts for your 2021 Subaru Impreza-Steering rack

2021 Subaru Impreza steering rack — what it does and how to look after it

Yes, a steering rack is absolutely used on the 2021 Subaru Impreza. Technical sources confirm it’s a rack‑and‑pinion setup with Electric Power Steering (EPS). The 2021 Owner’s Manual notes the vehicle uses EPS and requires no power‑steering fluid top‑ups, which points directly to an electrically assisted rack-and-pinion system. Subaru’s service literature for 2017–2021 Impreza (Steering/Electric Power Steering sections) details the rack, inner/outer tie rods and EPS control gear. Subaru’s parts catalogues for the 2021 Impreza also list a complete rack-and-pinion steering gear assembly. Put together, those references make it clear the steering rack is fitted and central to how the Impreza steers.

What does it do? The steering rack converts the driver’s steering wheel input into left-right movement at the front wheels, keeping the Impreza precise and predictable. The EPS motor and controller add assist so turning effort stays light at parking speeds and nicely weighted on the open road, without the old-school hydraulic hoses, pumps or fluid.

As part of regular servicing, it’s worth giving the steering rack and linkages a once-over. Here’s what a good workshop will check:

• Rack boots (gaiters): Make sure they’re intact and clamped—no splits letting in water or grit.
• Inner and outer tie rods: Check for play, binding or torn ball-joint dust covers.
• Mounts and subframe fasteners: Confirm correct torque and no shifting after big pothole hits.
• Steering feel and EPS operation: No warning lights, pulling, notchiness or clunks on lock.
• Wheel alignment: Keep toe settings in spec to protect tyres and reduce rack stress.

Thinking about replacement? A worn rack can show up as steering knock over bumps, vague on‑centre feel, uneven tyre wear, or an EPS warning. Because the 2021 Impreza uses EPS, there’s no fluid to leak—issues are more about mechanical wear or electronic faults. Replacement is a safety‑critical job, so most owners leave it to a pro. Best practice is to:

• Disconnect the battery and lock/centre the wheel to protect the clockspring.
• Install a quality new or remanufactured rack, and renew tie‑rod end lock nuts and clamps.
• Torque all hardware to Subaru specs and refit the subframe correctly if lowered for access.
• Perform a four‑wheel alignment.
• Complete EPS calibrations (steering angle neutral position/torque sensor learn) with a suitable scan tool.

Look after the rack with periodic inspections and correct alignment, and it should go the distance for many hundreds of thousands of kilometres on Aussie and Kiwi roads.

Popular questions

Does the 2021 Subaru Impreza have power‑steering fluid?
No. It uses Electric Power Steering, so there’s no hydraulic fluid to check or replace. If the steering feels heavy or a warning light appears, have the EPS and steering gear inspected rather than looking for a fluid reservoir.

How long should a steering rack last?
With tidy roads and regular alignment checks, many racks last the life of the vehicle. Harsh potholes, off‑seal use, or torn rack boots can shorten that. Watch for play, clunks, or tyre wear and sort issues early.

Do I need an alignment and calibration after steering work?
Yes. Any tie‑rod or rack replacement needs a proper four‑wheel alignment. On the 2021 Impreza, the EPS also requires electronic calibrations so steering feel and driver‑assist systems behave as designed.