This 4 oz. replacement reservoir is designed for use with combination remote and tandem remote master cylinders, making it an essential component for maintaining optimal brake fluid levels in heavy-duty automotive and industrial applications. Crafted from durable, high-strength plastic, this reservoir offers excellent resistance to impact and harsh operational environments. Its screw-type cap, part # 330-4355, ensures a secure seal to prevent leaks and contamination, supporting reliable brake system performance even under demanding conditions. The compact size allows for easy installation and maintenance, making it ideal for fleet vehicles, industrial machinery, and custom brake setups where space and durability are critical.