Parts for your 2017 Subaru Impreza-Brake hose

2017 Subaru Impreza brake hose — what it does and when to replace it

Yes, the 2017 Subaru Impreza uses flexible brake hoses. Technical references including the Subaru Service Manual (MY17 Impreza, Brake section), the Subaru FAST electronic parts catalogue for GK/GT models, and common parts catalogues from major suppliers all show flexible brake hose assemblies at each wheel (front and rear) connecting the hard lines to the calipers. Subaru’s maintenance schedules also call for periodic inspection of brake lines and hoses, confirming they’re a standard, serviceable item on this model.

The brake hose is the flexible bit of the hydraulic brake system that lets pressurised brake fluid travel from the rigid lines to the moving suspension and steering. On the Impreza, each corner relies on a hose that can flex with bumps and full steering lock without kinking. When the driver presses the pedal, fluid pressure travels through these hoses to squeeze the calipers and stop the car. If a hose deteriorates—externally cracking or internally collapsing—it can cause a soft pedal, pulling to one side, dragging brakes, or a spongy feel.

For Aussie and Kiwi owners, it’s smart to have the hoses inspected at every service (about every 12 months/15,000 km). There’s no fixed replacement interval, but any of the following calls for new hoses, ideally in axle pairs:

• Visible cracking, bulging under pedal pressure, or chafe marks
• Corroded fittings, dampness, or fluid weeping at crimped ends
• Brake pull, slow release of a wheel, or inconsistent pedal feel

When fitting new hoses on a 2017 Impreza, a few workshop-friendly tips go a long way:

• Use a flare-nut spanner on hard-line fittings to avoid rounding.
• Always install new copper crush washers at banjo connections and torque to spec from the Subaru manual.
• Route the hose exactly through the strut brackets and clips—no twists—and check clearance at full lock and full droop.
• Bleed the system with fresh fluid to the grade shown on the reservoir cap (typically DOT 3 for this model) and keep the ABS modulator from running dry.

Quality replacement hoses—OE or reputable aftermarket—restore pedal feel and braking consistency. Keeping them in top nick is cheap insurance for safe, straight, and confidence-inspiring stops in city traffic or on a winding coastal run.

Popular questions about 2017 Subaru Impreza brake hoses

How often should the brake hoses be replaced?
There’s no strict time or kilometre limit. Subaru expects inspection at routine services and replacement on condition. In real-world Australia/NZ use, many last well over 10 years, but heat, road grime, and coastal environments can age them faster. If there’s any cracking, bulging, or fluid seepage, replace straight away—preferably both sides on the same axle.

What are the signs of a failing brake hose on this model?
Common clues include the car pulling to one side under braking, a spongy or inconsistent pedal, a wheel that stays slightly “on” after releasing the pedal, or visible hose damage. Any dampness around crimped ends is a red flag. If in doubt, don’t drive—get it inspected.

Can a handy DIYer change Impreza brake hoses at home?
Yes, if they’re confident with hydraulic brakes. They’ll need proper flare-nut spanners, new crush washers, a catch bottle, and a bleeding setup. Follow the Subaru hose routing and torque specs, avoid twisting the hose, and bleed thoroughly. If pedal feel isn’t perfect afterwards, or ABS bleeding is uncertain, a professional finish is wise.