Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The BSL6 square-ring kit groups six piston seals in the listed 1.620/1.120/1.120-inch arrangement. It is a caliper service component with mixed ring sizes, manufacturer material code 210M and a 0.099-inch square section. Its dimensions must agree with the caliper’s assigned replacement kit. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. The manufacturer produces disc brake systems and components for motorsport, street-performance and specialized applications, with a range covering calipers, brake rotors, master cylinders, valves, fittings and brake lines. Individual components are chosen to suit the complete brake system.
Technical Details
- Manufacturer part number: 130-5972
- Service component: Caliper Square Ring Kit
- Seal profile: Square-Ring
- Manufacturer-listed seal inside diameters: 1.620 / 1.120 / 1.120 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
Identify the complete BSL6 caliper reference before choosing this pack. Keep the larger and smaller ring positions distinct and compare each groove during service. Inspect dust protection, crossover joints, pistons and hardware separately, since the supplied hydraulic rings do not define a complete caliper overhaul.
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.
