Description
Product Overview
The Sawyer Auto front brake adjusting screw spring is engineered from high‑grade aluminum to deliver consistent brake response and durability. Measuring 2 x 4 x 4 inches and weighing just 1 ounce, this lightweight component replaces the OEM part (PCK-634415) without compromising strength. Its direct‑fit design ensures a seamless installation, matching the original specifications for a perfect fit.
Usage

Designed for a wide range of passenger cars, this spring is ideal for daily commuters, fleet vehicles, and performance enthusiasts seeking reliable brake adjustment. It performs well in various climates and road conditions, providing steady braking during city traffic, highway cruising, and occasional heavy loads.
Why Choose Us
Our brake spring undergoes rigorous road testing and quality inspections to guarantee OEM‑level reliability. Manufactured with modern tooling, it surpasses original material standards, offering enhanced corrosion resistance and longer service life. Each unit is backed by Sawyer Auto’s commitment to precision engineering.
Key Features
- Precision‑machined aluminum for lightweight strength
- Direct‑fit replacement matches OEM dimensions
- Enhanced corrosion resistance for extended durability
- Easy installation with no additional modifications
- Rigorous road testing ensures consistent brake performance
FAQ
Is this spring compatible with my vehicle?
Yes, the spring is designed as a direct replacement for the original Sawyer Auto part number PCK-634415 and fits most front brake assemblies that use the standard dimensions.
Do I need special tools to install it?
No special tools are required. The spring installs using standard brake adjustment tools and follows the same procedure as the factory part.
What warranty does Sawyer Auto provide?
Sawyer Auto offers a one‑year limited warranty covering manufacturing defects and material failures.
Can I use this spring for performance upgrades?
While the spring meets OEM specifications, it also offers improved corrosion resistance and consistent tension, making it suitable for both daily driving and moderate performance applications.
How does the aluminum material compare to the original?
The aluminum construction provides a lighter weight while maintaining the strength needed for reliable brake adjustment, often outperforming older steel‑based designs in durability and heat dissipation.





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