Four Seasons 69321 Blue 72-Inch Manifold Gauge Service Hose with Anti-Blow Back

The Four Seasons 69321 is a 72-inch blue manifold gauge service hose designed for use with R12 refrigerant systems. Featuring an integrated anti-blow back valve, this hose helps prevent refrigerant from escaping during disconnect, improving safety and reducing refrigerant loss during A/C system service.

As a universal-fit hose, it is compatible with standard manifold gauge sets used in automotive air conditioning service and repair. The color-coded blue designation indicates the low-pressure (suction) side of the A/C system, making it easy to identify during service procedures.

Key Features:

• 72-inch (6-foot) hose length for flexible reach during A/C service
• Blue color coding — low-pressure/suction side identification
• Anti-blow back valve to minimize refrigerant release on disconnect
• Designed for use with R12 refrigerant manifold gauge sets
• Universal fit for standard manifold gauge service equipment

Four Seasons is a division of Standard Motor Products and is the largest supplier of replacement mobile climate control products in North America. All Four Seasons hoses and A/C components are built to meet or exceed OEM specifications for reliable, professional-grade performance.