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A Detailed Manual About Brake Piston

Brake Piston

Table of Contents

Firstly, do you know what a brake piston is? It is an essential part of brake calipers responsible for the brake pads that make contact with the brake discs and slow the car. If you find an issue with your brake piston on the caliper, you can contact us to get it fixed or if a replacement is required. 

How Does Brake Piston Work

How Does Brake Piston Work

However, when you press the brake, the master cylinder pumps the brake fluid, and the brake piston pushes the brake pads into the brake rotors. As a result, friction is created between the brake pads and rotors, turning mechanical energy from heat into heat energy. Therefore, it helps slow down the wheel’s rotation and the vehicle. 

The Composition of Brake Piston

The piston in a brake caliper is made of steel, aluminum, or plastic. Aluminum is lightweight, and steel is strong. Thus, aluminum transfers more heat to the brake fluid, which can cause the brake to fade. However, the brake fades when the brake components get too hot, which decreases brake performance. 

Reasons for Failing of Brake Caliper Piston 

  • The brake caliper piston is durable and can handle pressure from the master cylinder and heat from braking.
  • Although it is often exposed to dirt, water, and debris, the brake piston has a long lifespan. 
  • Meanwhile, the caliper piston can get caught in a withdrawal position and cannot engage the brake pad onto the rotor. 
  • While if the piston is stuck, you will have to replace it; no repairments will work. 
  • Some pistons are made of phenolic resin, which can crack with time or if they are depressed back forcefully. 

Symptoms of Brake Piston Failure

Symptoms of Brake Piston Failure 

Vehicle Going One Side

The brake caliper piston moves in and out through the hydraulic pressure from the master cylinder. If the piston seizes due to dirt or rust, the brake pads will fail to release from the rotor.  

Rubbing Noises

A strange noise from the damaged caliper shows a frozen brake caliper. However, a faulty piston caliper can make a noise, even if the brake is not pressed. 

Uneven Brake Pad Wear

When the brake pads are thinner on one side than the other, the braking caliper will create a problem. It can also happen if the caliper piston does not apply enough pressure to the brake pads. 

Leakage of Brake Fluids 

Modern braking systems operate on hydraulic pressure; if a leak begins, you might only see oily fluid gathering under the vehicle. This fluid is from brake components, like the master cylinder or fluid lines. 

Factors to Replace Brakes Caliper Piston 

Better Braking Performance 

However, the brake caliper provides better-stopping power and lesser stopping distances and enhances the pedal feel compared to stock components. 

Improves Durability

The advanced brake caliper is designed with high-quality materials, offering improved heat resistance and wear for excessive longevity.  

Personalization Options 

The aftermarket brake caliper will provide additional features, including drilled or placed designs to improve heat depletion and pad cleaning. 

How Much is the Cost of a Brake Caliper Piston?

We offer all types and models of brake calipers based on factors like design, size, and technology. You can buy a new or used brake caliper. 

  • The price of a new brake piston varies depending on the model and type, ranging from $100 to $500.
  • Otherwise, you can also purchase a used brake piston, which costs between $50 and $200.

Checklist Before Buying a Used Brake Caliper Piston 

Compatibility 

Before purchasing, you must check if your vehicle is compatible with the brake caliper you choose.

Performance

Meet the performance goals, including improved braking performance and excessive heat, and choose components that suit these goals.

Installation  

Please choose whether you will install the brake caliper piston on your own. Otherwise, if you need professional help, you can call our agents.

Budget 

However, you must choose wisely and under your budget. Check out our website to get outstanding deals. 

Frequently Asked Questions

What do four-piston brakes in a caliper mean?

However, 4-caliper piston brakes are bigger physically to fit the extra piston, like more fluid can go inside the space. While getting more space and fluid, your car will not heat up quickly. 

What do you do if the brake piston turns terrible?

If the piston is rusted, the caliper will not extend or retract smoothly; however, if you see some symptoms like pulling the vehicle to one side, rubbing noises, or uneven brake pad wear. 

Is it OK to drive with a faulty piston?

When you drive with a faulty brake piston ring for more than 5000 miles without fixing the problem, it is better to stop your car immediately and contact a professional because it can ruin the entire braking system. 

What is the lifespan of a brake piston?

Thus, the shelf life of brake pistons depends on factors, but on average, they last for years if you do not meet with an accident or any cracks. 

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