Description
Brake system reliability depends on maintaining proper piston seals, and worn or degraded O-rings compromise both stopping power and safety. This Wilwood Square O-Ring Kit restores the critical seal on 1.38-inch pistons, preventing fluid leakage and ensuring consistent brake pressure across all four corners of your vehicle. Whether you’re rebuilding calipers for track duty or maintaining a street machine, fresh O-rings are essential preventative maintenance that extends caliper life and keeps your braking system performing at peak efficiency.
- Material: 210M elastomer
- Pack quantity: 4 O-rings
- Piston diameter: 1.38 inches
- Secondary seal ID: 1.000 inch
- Cross-section thickness: 0.099 inch
- Compatible fluids: DOT 3, 4, 5
- Fitment: Wilwood calipers only
- Installation: Bolt-on replacement






Reviews
There are no reviews yet.