Parts for your 2017 Subaru Impreza-Radiator

2017 Subaru Impreza Radiator

Yes, the 2017 Subaru Impreza uses a radiator. This is confirmed by Subaru’s technical literature: the Impreza 2017MY Service Manual (Cooling section) details the radiator, fans, thermostat and coolant flow, the 2017 Owner’s Manual covers coolant checks and warnings, and the Subaru genuine parts catalogue for GK/GT models lists a complete radiator assembly. It’s a standard liquid-cooled setup for the FB20 engine, so the radiator is absolutely relevant to this model.

The radiator’s job is simple but critical: it dumps engine heat into the air so the flat-four can run at the sweet spot for performance and longevity. Coolant absorbs heat in the block and heads, heads to the aluminium core up front, and the airflow (plus electric fans) pulls heat out through the fins. The system is pressurised with a specific cap rating and uses long-life coolant to resist corrosion and cavitation.

For ongoing care, stick with Subaru-approved long-life coolant (the blue premix is common locally) and don’t mix colours or brands. Service intervals vary by market, but many AU/NZ schedules allow an extended initial interval with Subaru Super Coolant before periodic changes, still, it’s smart to inspect levels and condition at every service. Under the bonnet, only open the cap when the engine is stone cold. When refilling, bleed air properly so the heater’s hot and fans cycle as they should.

• Check coolant level and hose condition at each service.
• Look for dried pink/white residue around tanks, seams and hose necks.
• Wash bugs and debris from the fins, avoid bending them.
• Replace the radiator cap if the rubber is cracked or the spring’s weak.
• Use demineralised water only if mixing concentrate, otherwise use the correct premix.
• If removing the radiator, note some variants pair it with a CVT heat exchanger—cap lines and avoid contamination.

Replace the radiator if there are leaks, swollen plastic tanks, crushed fins causing overheating at idle, or persistent contamination in the coolant. Quality aftermarket or genuine units both work if they meet OE spec, pair a new radiator with fresh hoses, clamps, thermostat and cap for a drama-free result.

Popular questions about the 2017 Subaru Impreza radiator

What coolant should be used?
Subaru-approved long-life coolant (often the blue premix locally) is recommended. It’s formulated to protect the FB20’s aluminium passages and water pump. Avoid mixing coolants—flush completely if switching types.

How often should coolant be changed?
Follow the Subaru schedule for your market. Many AU/NZ vehicles on Subaru Super Coolant have an extended initial interval, then periodic changes thereafter. Even so, check level and condition at every service and top up only with the correct coolant.

What are signs the radiator needs replacing?
Watch for overheating at idle, visible leaks or crusty deposits at the end tanks, soft or ballooned plastic tanks, or repeated coolant loss. Discoloured, sludgy coolant can point to internal breakdown or contamination and warrants a closer look.