CAT 571-1111 Inner Diameter Bulk Hose (15.88 mm)

Product Overview

The CAT 571-1111 Bulk Hose is a genuine Caterpillar OEM air conditioning hose designed to transfer refrigerant or coolant between components within the machine HVAC system. Featuring a 15.88 mm inner diameter (0.625 in), this hose provides reliable fluid flow while withstanding the pressure, temperature changes, and operating conditions found in Caterpillar equipment.

Manufactured from durable hose materials with reinforcement layers for strength and pressure resistance, the 571-1111 is engineered to resist refrigerants, oils, and chemicals while maintaining dependable performance in demanding work environments. It includes a straight coupling and is used in Caterpillar air conditioning applications.

Key Features

• Genuine Caterpillar OEM bulk hose
• Inner diameter: 15.88 mm (0.625 in / 5⁄8 in)
• Supplied with straight coupling
• Designed for air conditioning refrigerant or coolant routing
• Resistant to refrigerants, oils, and chemicals
• Reinforced construction for improved strength and durability
• Designed to handle pressure and temperature variations
• Supports reliable HVAC system operation
• Precision-manufactured for Caterpillar equipment applications
• Factory-fit component meeting Cat specifications

Technical Specifications

Compatible Caterpillar Equipment

The CAT 571-1111 Bulk Hose is listed for use on:

Mini Hydraulic Excavators

• 303.5CR
• 304CR

The exact hose routing and application may vary depending on machine configuration and serial number. Always verify compatibility using the machine Product Identification Number (PIN) before ordering.

Application Information

The 571-1111 hose is part of the Caterpillar air conditioning system and serves as a flexible connection for refrigerant or coolant circulation between HVAC components. Proper hose performance helps maintain:

• Efficient refrigerant flow
• Correct air conditioning system pressure
• Reliable cab cooling performance
• Reduced risk of leaks and system downtime

Additional Compatibility Information

Because HVAC hose assemblies are designed for specific machine layouts, correct installation requires matching the hose diameter, coupling style, routing path, and equipment configuration. Using a genuine CAT hose helps ensure proper fit and long-term durability.

Benefits

Installing a genuine CAT 571-1111 Bulk Hose helps:

• Maintain efficient HVAC system operation
• Prevent refrigerant leakage
• Improve cab comfort and operator productivity
• Withstand harsh construction environments
• Reduce maintenance downtime
• Ensure OEM-quality fit and reliability