4120012 MERITOR D3 Washer, Brake Caliper Shaft

The 4120012 is a precision-engineered washer designed specifically for the Brake Caliper Shaft within air disc brake systems. This component plays a critical role in maintaining the structural integrity and proper positioning of the caliper shaft, ensuring consistent braking performance under heavy-duty operating conditions. Its robust construction provides essential stability to the braking assembly.

4120012 is the OE-equivalent of the MERITOR 68320133 washer used in the MERITOR D3 braking system. This part is specifically engineered to meet the strict requirements of heavy commercial vehicle maintenance, ensuring seamless integration with compatible braking hardware. It serves as a direct replacement for the original component to maintain system safety.

For workshop technicians performing brake service or overhaul, this part offers ease of assembly and precise fitment. It is essential to check the condition of the caliper shaft and surrounding components during routine maintenance to ensure that this washer and related parts are in optimal condition. Proper installation ensures the longevity of the air disc brake system and prevents unnecessary mechanical wear.