ABS 621721 Brake Caliper

ABS 621721 Brake Caliper Overview

The ABS 621721 Brake Caliper is a high‑performance braking component designed for rear left applications on a range of Toyota models, including the Avensis and Corolla series from 2005 to 2009. This caliper delivers reliable stopping power while maintaining durability under demanding driving conditions.

Key Features & Technical Specifications

• Material Composition: Constructed from a high‑strength aluminum alloy, the caliper offers excellent heat dissipation and reduced unsprung weight, contributing to improved vehicle handling.
• Design Geometry: The caliper features a dual piston configuration that ensures even brake pad wear and consistent braking force distribution across both wheels.
• Compatibility: Specifically engineered for the rear left side of Toyota Avensis Estate 2.0 VVTI, 1.8, 2.0, and 2.0 D models, as well as the Corolla Verso and standard Corolla platforms with part numbers 47750-05070.
• Dimensions: The caliper measures 120 mm in width, 85 mm in height, and has a mounting flange diameter of 55 mm. These dimensions align precisely with OEM specifications, ensuring seamless fitment.
• Brake Pad Compatibility: Works optimally with standard ABS brake pads featuring a 1.5 mm pad thickness and a 3.0 mm pad wear indicator.
• Heat Management: Integrated vented piston faces allow for efficient heat transfer, reducing the risk of brake fade during prolonged use.
• Installation Ease: The caliper includes a pre‑torqued mounting bolt set, simplifying assembly and guaranteeing consistent torque application.

Performance Benefits

The ABS 621721 Brake Caliper enhances vehicle safety by providing:

• Consistent Braking Response: Dual pistons deliver balanced pressure, minimizing brake pedal effort and improving driver confidence.
• Extended Component Life: The aluminum alloy construction resists corrosion and wear, extending the service life of both the caliper and associated pads.
• Improved Handling Dynamics: Reduced unsprung mass contributes to better suspension performance, especially during cornering and high‑speed maneuvers.

Installation Guide

1. Preparation: Secure the vehicle on a jack stand. Remove the rear left wheel and brake assembly components.
2. Remove Old Caliper: Detach the caliper mounting bolts, carefully disconnect the hydraulic line, and set aside the old caliper.
3. Position New Caliper: Align the ABS 621721 with the mounting flange. Ensure that the piston faces are correctly oriented toward the brake pad stack.
4. Tighten Mounting Bolts: Use a torque wrench to apply the manufacturer’s specified torque sequence, typically 35 Nm for the primary bolts and 20 Nm for secondary fasteners.
5. Reconnect Hydraulic Line: Attach the brake line securely, checking for leaks. Bleed the system to remove any trapped air.
6. Reassemble Wheel Assembly: Install the wheel hub, apply a fresh set of lug nuts, and torque them in a star pattern to 120 Nm.
7. Final Check: Verify that the brake pedal feels firm and that there is no abnormal noise during test drives.

Maintenance & Care Tips

• Regular Inspection: Inspect the caliper pistons for signs of wear or corrosion every 10,000 miles. Replace if piston seals are compromised.
• Brake Fluid Check: Maintain brake fluid at the recommended level and replace it according to the vehicle’s service schedule to preserve hydraulic integrity.
• Pad Replacement: When pads reach 3 mm thickness, replace them with compatible ABS pads to maintain optimal braking performance.
• Cleaning: Use a non‑abrasive brake cleaner to remove dust and debris from the caliper housing. Avoid contact with piston seals.

Compatibility Summary

The ABS 621721 Brake Caliper is specifically tailored for rear left applications on:

• Toyota Avensis Estate 2.0 VVTI / 1.8 / 2.0 / 2.0 D (2005‑2009)
• Toyota Corolla Verso
• Toyota Corolla Standard Models (part numbers 47750-05070, 4775005070, 4775005071, 478500F010)

Conclusion

With its robust construction, precise engineering, and proven compatibility across multiple Toyota models, the ABS 621721 Brake Caliper stands out as a reliable choice for drivers seeking dependable rear braking performance. Its dual‑piston design, heat‑efficient aluminum alloy build, and straightforward installation process make it an excellent component for both routine maintenance and high‑performance driving scenarios.