Parts for your 2020 Subaru Impreza-Brake wheel cylinders

Understanding Brake Wheel Cylinders on the 2020 Subaru Impreza

When it comes to the braking system of the 2020 Subaru Impreza, it's important to understand the role of various components. One part that might come to mind is the brake wheel cylinder. However, for this specific model, brake wheel cylinders are actually not used. Instead, the 2020 Subaru Impreza employs a modern disc brake system on all four wheels, which relies on brake calipers rather than wheel cylinders.

Brake wheel cylinders are typically found on vehicles equipped with drum brakes. These cylinders are small hydraulic components that sit inside the drum brake assembly. Their main job is to convert hydraulic pressure from the brake fluid into mechanical force. When the brake pedal is pushed, brake fluid is forced into the wheel cylinders, which then push the brake shoes outward against the drum. This friction slows the wheel down, ultimately bringing the vehicle to a halt.

So why isn't the 2020 Subaru Impreza fitted with brake wheel cylinders? The reason lies in the type of braking system it uses. The Impreza comes standard with discs on the front and rear wheels, which use calipers and brake pads. Disc brakes are generally more efficient and offer better stopping power and heat dissipation compared to drum brakes. Modern vehicles, especially compact sedans like the Impreza, favour disc brakes all around as they provide a more effective, responsive, and consistent braking experience.

Disc brakes operate differently from drum brakes and don't require wheel cylinders. Instead, they use brake calipers with pistons to squeeze brake pads against a spinning disc or rotor attached to the wheel. This direct clamping action creates the friction needed to slow down the vehicle.

In terms of maintenance and servicing of the braking system on the 2020 Subaru Impreza, attention should be focused on the brake calipers, pads, rotors, and brake fluid rather than wheel cylinders. Brake pads will wear down over time and will need inspection and replacement to maintain optimal braking performance. Rotors should also be checked for excessive wear or warping. Brake calipers can occasionally stick or leak, so ensuring they are functioning properly is key to safe braking.

Brake fluid should be regularly checked and replaced according to Subaru's recommended service intervals, as it can absorb moisture over time, leading to reduced braking efficiency and potential corrosion inside the braking system. Regular bleeding of the brake lines to remove air bubbles is also essential to maintain a firm brake pedal feel.

For Subaru Impreza owners, it's good practice to have the brakes inspected every 12 months or 12,000 kilometres, whichever comes first. This includes checking the discs and pads for wear, ensuring the calipers are clean and moving freely, and confirming that the brake lines and fluid are in good condition.

While brake wheel cylinders are an important component on drum brake systems, the 2020 Subaru Impreza's all-disc brake setup does not include them. This contributes to the vehicle's reliable and consistent braking performance, making it a practical and safe choice for drivers.