Dorman 800-422 HVAC Heater Hose Connector - Auxiliary Heater

Overview of Dorman HVAC Heater Hose Connector 800-422

The Dorman HVAC Heater Hose Connector 800-422 is designed to provide a reliable connection within the heating and cooling system of select GM vehicles. Engineered with durable plastic and featuring a 45-degree fitting angle, this heater hose connector ensures proper fluid flow and fitment for specific Cadillac, Chevrolet, and GMC models.

• Constructed from durable plastic material for corrosion resistance
• 45-degree fitting angle for optimal hose routing
• Dual hose barb attachment ends sized 5/8 inch and 3/4 inch
• Includes one heater hose tee connector
• Compatible with select Cadillac, Chevrolet, and GMC SUVs and trucks

Detailed Product Description

The Dorman 800-422 HVAC Heater Hose Connector is a plastic tee designed to connect heater hoses within the HVAC system. Its 45-degree fitting angle allows for efficient hose routing in tight engine compartments, reducing stress on hoses and preventing kinks. Both ends feature hose barb fittings, with one end sized at 5/8 inch and the other at 3/4 inch, accommodating different hose diameters commonly found in heating systems of vehicles like the Chevrolet Tahoe and GMC Yukon. This connector is specifically compatible with models including the Cadillac Escalade, Chevrolet C1500 and C2500 Suburban, GMC K1500 and K2500 Suburban, Tahoe, and Yukon, ensuring a precise fit and reliable performance.

Applications and Common Issues Addressed

• Replacement of cracked or leaking heater hose connectors in HVAC systems
• Resolving coolant leaks caused by damaged or worn hose fittings
• Restoring proper coolant flow in heating systems of Cadillac Escalade and Chevrolet Suburban models
• Preventing hose disconnections due to improper fit or angle
• Maintaining system integrity in GMC Yukon and Tahoe HVAC heater hoses

Installation Notes and Tips

• Ensure hoses are clean and free of debris before installation
• Use appropriate clamps to secure hose barb fittings tightly
• Verify correct hose sizes (5/8 inch and 3/4 inch) for proper fit
• Inspect surrounding hoses and components for wear during replacement
• Follow vehicle manufacturer guidelines for HVAC system maintenance

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing dependable performance for HVAC system repairs. The 800-422 heater hose connector undergoes quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship to support customer confidence in replacement parts.