Parts for your 2019 Subaru Impreza-Brake wheel cylinders

2019 Subaru Impreza brake wheel cylinders — are they used?

Short answer: brake wheel cylinders aren’t fitted to the 2019 Subaru Impreza sold in Australia and New Zealand. Technical references including the Subaru Australia 2019 Impreza specification sheet (all grades), the Subaru Service Manual Brake section (BR) for the GK/GT platform, and Subaru’s FAST electronic parts catalogue all show four-wheel disc brakes (ventilated front, solid rear) with calipers and no rear drum assemblies—so there’s no place for a wheel cylinder on this model.

A wheel cylinder is a hydraulic component used only in drum brake systems to push the brake shoes outwards. Because the 2019 Impreza runs disc brakes front and rear, it relies on calipers with pistons instead. That setup offers better heat management, more consistent pedal feel and easier servicing—big reasons modern small cars like the Impreza moved away from drums in this market.

For owners hunting parts, if a catalogue suggests “brake wheel cylinders” for a 2019 Impreza, it’s either a miscategorised listing or meant for different overseas trims that used rear drums in certain markets. Locally delivered 2019 Imprezas don’t use them.

What should be serviced instead? Focus on the disc hardware:

• Calipers and slider pins: clean and lubricate the pins at brake services to prevent uneven pad wear.
• Pads and rotors: inspect thickness, glazing and runout, replace in axle pairs as needed.
• Brake fluid: replace every 2 years (or as per the service schedule) to keep moisture and corrosion at bay.
• Hoses and lines: check for cracking, seepage or corrosion.

Not sure what’s on the back of the car? A quick look through the rear wheel spokes gives it away—if there’s a visible rotor and caliper, it’s a disc setup with no wheel cylinder. If you’re working on the brakes, use quality parts and follow torque specs from the Subaru manual, and bed in new pads correctly for a quiet, consistent pedal.

Popular questions

Does a 2019 Subaru Impreza have brake wheel cylinders?
No. The Australian and New Zealand 2019 Impreza uses disc brakes front and rear, so it has brake calipers rather than drum brake wheel cylinders. This is confirmed by Subaru’s specifications, service manual (BR section) and the factory parts catalogue.

What part does the job of a wheel cylinder on the Impreza?
The brake caliper. Hydraulic pressure moves one or more pistons in the caliper to clamp the pads onto the rotor. Keep the slider pins clean and lubricated, check piston seals for leaks and replace pads and rotors in axle sets to maintain even braking.

Are there any Impreza variants with rear drum brakes?
In some overseas markets and trims, certain Impreza models have been offered with rear drums. However, the 2019 Australian and New Zealand models are four-wheel disc setups, so wheel cylinders don’t apply to local cars.