The GRACO 557880 is a high capacity fill port designed for use with oil and grease in lubrication systems. It features a threaded, quick-disconnect connection and is intended for efficient and secure filling of reservoirs in on-road and off-road vehicle lubrication equipment.

Key Features:

• Fill Stud
• Size A: 1/4 in (6.35 mm), Size B: 3/8 in (9.525 mm)
• Oil, Grease
• Quick-disconnect for fast and secure attachment/detachment
• Threaded (NPTF) connection for leak resistance
• High capacity for efficient filling operations
• Robust design for use in demanding environments

Applications:
On-road vehicles, off-road equipment, pneumatic grease jockey systems.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of lubrication systems.
• Ensure the fill port is securely threaded to prevent leaks
• Use appropriate tools to avoid cross-threading
• Regularly inspect for wear or damage and replace as needed
• Follow manufacturer guidelines for system pressure and material compatibility