Parts for your 2016 Subaru Impreza-Brake wheel cylinders

2016 Subaru Impreza brake wheel cylinders — are they used?

Short answer: brake wheel cylinders aren’t used on the 2016 Subaru Impreza sold in Australia and New Zealand, so the part isn’t relevant for this vehicle in these markets. Subaru’s official technical information for the GP/GJ series shows a four-wheel disc braking system (ventilated front, solid rear) with floating calipers, not drum brakes. That’s confirmed by the Subaru Australia MY2016 Impreza specifications, the Subaru Impreza GJ/GP service manual (Brake section), and the Subaru parts catalogue for AU/NZ models. Some overseas base trims (not typically sold new here) were built with rear drum brakes and therefore used wheel cylinders, but local-spec cars are disc-brake all round.

What is a wheel cylinder anyway? It’s the small hydraulic cylinder inside a drum brake that pushes the brake shoes outwards. Because AU/NZ 2016 Imprezas run rear disc brakes, they use calipers with pistons instead of wheel cylinders. The parking brake on these cars is a mechanical “drum-in-hat” inside the rear rotors, actuated by a cable, so again—no hydraulic wheel cylinder involved.

Why Subaru went with discs here comes down to better heat management, more consistent pedal feel, and precise ABS/ESC modulation. It also simplifies servicing: fewer internal drum parts and no wheel cylinders to leak or seize.

Servicing advice for your 2016 Impreza’s brakes (instead of chasing non-existent wheel cylinders):

• Inspect front and rear calipers for free slide-pin movement, dust-boot condition, and piston seal weep.
• Replace brake fluid every 2 years regardless of kilometres to keep moisture at bay and maintain pedal feel.
• Check pad thickness, even wear, and rotor runout, machine or replace rotors if they’re under spec or pulsing.
• Adjust and inspect the rear parking-brake shoes inside the rotor hat, they’re mechanical and can glaze or go out of adjustment.
• Use the correct DOT-spec fluid, avoid contamination, and follow proper bleed sequences after any hydraulic work.

Technical sources referenced: Subaru Australia MY2016 Impreza specifications (GP/GJ), Subaru Impreza GJ/GP Workshop Manual — Brake section, and Subaru AU/NZ parts catalogue listings for 2016 Impreza disc-brake rear assemblies.

Popular questions about 2016 Subaru Impreza brake wheel cylinders

Do 2016 Subaru Imprezas in Australia or New Zealand have brake wheel cylinders?
No. Local-spec 2016 Imprezas have four-wheel disc brakes with calipers, so there are no hydraulic wheel cylinders. Only certain overseas base variants with rear drum brakes used wheel cylinders.

What should be serviced instead of wheel cylinders on my 2016 Impreza?
Focus on the calipers (slide pins, seals, piston operation), pad and rotor condition, and a biennial brake fluid change. Also check and adjust the mechanical parking-brake shoes inside the rear rotor hat.

How can I tell if an imported 2016 Impreza has rear drums and wheel cylinders?
Look through the rear wheel spokes: a shiny rotor means discs, while a closed drum housing indicates drums. If it’s a drum rear, it will have wheel cylinders, inspect for fluid leaks at the backing plate and a soft pedal after sitting—classic signs of a failing cylinder.