Description
Product Overview
The Carlson rear brake caliper piston is engineered for dependable stopping power. Constructed from painted aluminum, it balances lightweight construction with robust durability. Measuring 3.8 x 2.5 x 3.8 inches and weighing just 0.32 ounces, the piston fits the standard 7821 model specifications. Its painted finish resists corrosion, ensuring a long service life in various climates.
![[Product front view showing all components]](https://www.globalspark.store/wp-content/uploads/2026/06/3746dfa37ae54df9853f6ecabfa3bade.jpg)
Usage
Designed for passenger cars and light trucks, this piston is ideal for both daily commuters and performance enthusiasts. Install it during routine brake service or when replacing a worn piston to restore optimal brake feel. Compatible with most rear brake caliper assemblies, it supports safe driving in city traffic, highway cruising, and occasional spirited driving.
Why Choose Us
Carlson’s reputation for automotive parts ensures you receive a component that meets strict quality standards. Each piston undergoes rigorous testing for dimensional accuracy and material integrity. Our commitment to after‑sales support includes a responsive customer service team ready to assist with fitment questions and warranty claims.
Key Features
- Lightweight painted aluminum reduces unsprung weight for smoother handling
- Precise 7821 dimensions guarantee a perfect fit in standard rear calipers
- Corrosion‑resistant coating extends service life in harsh environments
- Easy installation saves time for DIYers and professional shops
- Dedicated customer support and warranty for peace of mind
FAQ
Is this piston compatible with all rear brake calipers?
It matches the standard 7821 size used by many manufacturers, but we recommend verifying your vehicle’s service manual for exact compatibility.
Do I need special tools to install the piston?
Standard brake tools such as a piston expander and torque wrench are sufficient for installation.
How does the painted finish affect performance?
The paint provides corrosion protection without adding significant weight, maintaining the piston’s performance characteristics.
What warranty does Carlson offer on this part?
Carlson provides a limited one‑year warranty covering manufacturing defects.
Can I reuse the brake fluid after installing this piston?
It is best practice to flush and replace brake fluid when servicing pistons to ensure optimal brake system performance.





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