ABS 721231 Brake Caliper

ABS 721231 Brake Caliper

Overview of the ABS 721231 Brake Caliper

The ABS 721231 Brake Caliper is a high-performance braking component designed for use in a wide range of automotive applications, particularly within the Toyota and Lexus lineups. It features a robust construction that delivers reliable stopping power while maintaining durability under demanding driving conditions.

Key Design Features

• Material Composition: Made from high-grade steel alloy with a grey cast finish for optimal heat dissipation.
• Piston Configuration: Single-piston design with an 18 mm bore, ensuring precise hydraulic pressure distribution across the brake pad.
• Compatibility: Engineered to fit rear calipers on models such as Toyota Land Cruiser Prado (90 and 70), Land Cruiser 100, and various Lexus SUVs. The caliper dimensions are tailored for a disc thickness of 18 mm and a diameter of 48 mm.
• Mounting System: Features a standardized mounting interface that aligns with the OEM bracket geometry, allowing for straightforward installation without extensive modification.

Performance Characteristics

The ABS 721231 is engineered to provide consistent braking performance across a range of temperatures. Its single-piston layout delivers uniform pad wear and reduces the risk of uneven brake fade. The grey cast finish enhances thermal conductivity, helping maintain optimal operating temperatures during prolonged use.

Heat Management

The caliper’s material selection and surface treatment are specifically chosen to dissipate heat efficiently. This capability is critical for maintaining braking efficiency in high-speed or heavy-load scenarios, such as towing or off-road driving.

Durability and Longevity

Constructed from a hardened steel alloy, the ABS 721231 resists corrosion and wear. The design incorporates reinforced piston seals that maintain hydraulic integrity over extended service intervals, reducing maintenance frequency.

Installation Guidelines

1. Preparation: Ensure the vehicle’s brake system is depressurized before removal of the existing caliper.
2. Removal: Detach the caliper from its mounting bracket, carefully disconnecting any hydraulic lines and retaining clips.
3. Installation: Position the new ABS 721231 onto the bracket, aligning the mounting holes precisely. Reconnect hydraulic lines and secure all fasteners to the specified torque settings.
4. Bleeding: After installation, bleed the brake system to eliminate air pockets and restore full braking pressure.

Maintenance Tips

• Inspect piston seals for wear or damage during routine maintenance checks.
• Check for any signs of corrosion on mounting surfaces; clean with a non-abrasive brush if necessary.
• Replace brake pads in accordance with the manufacturer’s recommended interval to preserve optimal contact pressure.

Technical Specifications

Applications Across Vehicle Models

The ABS 721231 is specifically engineered for rear braking systems on a variety of Toyota and Lexus models. Its design accommodates the unique geometry and performance requirements of each vehicle, ensuring seamless integration.

• Toyota Land Cruiser Prado (90 & 70): Designed to match the rear caliper architecture and disc specifications.
• Toyota Land Cruiser 100: Compatible with the larger rear brake assembly, providing enhanced stopping power.
• Lexus SUVs: Tailored for rear braking systems that demand high reliability and consistent performance.

Cross-Reference Identifiers

The ABS 721231 shares compatibility with several cross-referenced part numbers used in various markets. These identifiers facilitate sourcing and inventory management across international automotive supply chains:

• 477506011084, 4775060070, 4775060040, 4775060110
• 47750-60070, 47750-60040
• Xlhoabs, Xlhrabs, Xlhpabs, Xlhnabs

Quality Assurance and Compliance

The ABS 721231 undergoes rigorous testing to meet stringent automotive safety standards. Each unit is inspected for dimensional accuracy, material integrity, and functional performance before shipment.

• Dimensional Tolerance: ±0.1 mm on critical mounting surfaces.
• Material Certification: Compliance with ISO 9001 quality management systems.
• Functional Testing: Hydraulic pressure tests and thermal cycling to validate performance under extreme conditions.

Conclusion

The ABS 721231 Brake Caliper stands out as a reliable, high-performance component for rear braking systems in Toyota and Lexus vehicles. Its thoughtful design—combining durable materials, precise piston mechanics, and heat management—ensures consistent stopping power while extending the lifespan of the brake assembly.