Fitment questions?
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Product details
The 1.120-inch-ID square-ring kit contains four caliper piston seals. Its section is specified at 0.099 inch, and the manufacturer lists material code 210M. This seal pack is used only where the caliper’s service instructions call for the matching ring and groove combination. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications; selection depends on the complete brake system.
Technical Details
- Manufacturer part number: 130-2579
- Service component: Caliper Square Ring Kit
- Seal profile: Square-Ring
- Manufacturer-listed seal inside diameters: 1.120 inches
- Listed seal thickness: 0.099 inch
- Manufacturer material code: 210M
- Pack quantity: 4 Pack
- Seal fluid compatibility: DOT 3, DOT 4 and DOT 5 as specified for these seals. Follow the complete caliper and vehicle fluid requirements; do not mix silicone DOT 5 with DOT 3, DOT 4 or DOT 5.1.
Fitment & Compatibility
FL40 identifies this kit in the service parts for the 1.12-inch PS-1 versions. Check the complete caliper reference and inspect the groove and piston before fitting replacement rings. Pack quantity does not establish how many calipers or an entire axle can be overhauled, and other components may require separate attention.
PMB Performance has over 20 years of experience helping customers with brake and parts fitment. Share the installed component identification and relevant measurements when requesting assistance.
