Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This TC square-ring kit supplies six piston seals in the listed 1.880/1.620/1.620-inch inside-diameter arrangement. It is a mixed-size hydraulic service pack with the 0.099-inch square section. The correct application is established by the caliper’s exact replacement-kit reference rather than the TC family label alone. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company makes disc brake systems and components for motorsport, street-performance and specialized uses, including calipers, brake rotors, master cylinders, valves, fittings and brake lines; each component must match the requirements of the complete brake system.
Technical Details
- Manufacturer part number: 130-9173
- Service component: Caliper Square Ring Kit
- Seal profile: Square-Ring
- Manufacturer-listed seal inside diameters: 1.880 / 1.620 / 1.620 inches
- Listed seal thickness: 0.099 inch
- Manufacturer material code: 210M
- Pack quantity: 6 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
Check the installed caliper and keep the larger and smaller seal locations identified during disassembly. Compare groove profile and ring dimensions before installation. Inspect piston surfaces, bores, dust protection and other hardware separately to establish the complete service requirement beyond the six supplied pressure rings.
For help identifying the correct brake component, provide the caliper markings and installation dimensions. PMB Performance has over 20 years of experience with parts and brake-system details.
