Parts for your 2006 Subaru Impreza-Brake calipers

2006 Subaru Impreza Brake Calipers

Based on technical references including the Subaru Impreza 2006 Service Manual (Brake section), Subaru FAST parts catalog, and the 2006 Owner’s Manual, the 2006 Subaru Impreza uses brake calipers. All trims run front disc brakes with calipers, and most Australian and New Zealand models also have rear disc brakes with calipers (performance variants like WRX and STI definitely do). Some base trims in certain markets may have rear drums, but that doesn’t change the fact calipers are essential up front—so “brake calipers” is absolutely relevant for this model.

On a 2006 Impreza, the brake caliper’s job is to squeeze the pads onto the rotor when the driver presses the pedal, turning hydraulic pressure into stopping power. On most non‑performance trims they’re floating single‑piston units, while WRX and STI variants use performance multi‑piston calipers (STI models run fixed Brembos). Either way, they’re a critical safety component and a big part of pedal feel and even tyre wear if they start dragging.

As part of regular servicing, it’s smart to give the calipers some love. Inspect the dust boots and seals for cracks or leaks, make sure the slide pins move freely, and clean off any road grime. Use the correct high‑temp caliper grease on the slides and pad ears (never on the pad friction surface or rotor), and check pad wear is even side‑to‑side. If the pedal feels spongy or the car pulls under braking, it could be a sticking piston or seized slide pin.

Brake fluid should typically be replaced every 24 months, using the fluid grade shown on the reservoir cap (DOT 3 or DOT 4 is common). When changing calipers, always use new copper washers on banjo bolts, torque the mounting bolts to spec, and bleed the system in the proper sequence. After installation, bed in the pads per the pad manufacturer’s guidance to avoid squeal and glazing.

For owners in Australia and New Zealand, keeping calipers in good nick helps with WOF/rego inspections and avoids uneven pad wear, overheating, or warped rotors. If a caliper’s piston bore is pitted or a bleed screw is frozen, a quality remanufactured or new unit can be more reliable than a rebuild. Performance models (WRX/STI) may need specific pad shapes and hardware, so matching parts to the VIN or caliper casting number is the easiest way to get it right.

• Replace or rebuild calipers if there’s fluid leakage, seized slides or pistons, uneven pad wear, or persistent pulling.
• Inspect every service (about 10,000–15,000 km) and flush brake fluid every 24 months.
• Use proper high‑temp greases and always bleed air out after any hydraulic work.

FAQs

What type of brake calipers does a 2006 Subaru Impreza have?
The exact calipers vary by trim and market. Most non‑performance models use floating single‑piston front calipers, with either rear discs (calipers) or drums. WRX models run performance multi‑piston calipers, and STI models use fixed Brembo calipers. Checking the VIN or caliper casting numbers is the best way to confirm.

How often should the calipers be serviced?
Have them inspected every service (roughly every 10,000–15,000 km or 6–12 months). Clean and lubricate slide pins, check boots and seals, confirm even pad wear, and flush brake fluid about every 24 months to keep pedal feel crisp and prevent internal corrosion.

Can a seized caliper be rebuilt, or should it be replaced?
Light corrosion and sticky slides can often be fixed with cleaning, new seals, and fresh grease. If the piston bore is pitted, the dust/pressure seal lands are damaged, or the bleed screw is beyond saving, replacement with a quality new or remanufactured unit is usually the safer, longer‑term option.