Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This mixed-size square-ring pack supplies four piston seals with listed 1.880- and 1.620-inch inside diameters. Wilwood assigns the combination to the specified Prolite, Integra or BSL service configurations. Family names alone do not determine compatibility; the exact caliper reference and replacement kit must agree. 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: 130-5100
- Service component: Caliper Square Ring Kit
- Seal profile: Square-Ring
- Manufacturer-listed seal inside diameters: 1.880 / 1.620 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
Compare the caliper’s piston arrangement and assigned seal kit before removing the old rings. Keep larger and smaller positions identified and check the 0.099-inch section at the groove. Establish any additional repair parts from inspection, including dust protection and hydraulic joints that are separate from this piston-seal pack.
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.
