Dorman 626-619 HVAC Heater Hose Assembly - Inlet

Overview of Dorman HVAC Heater Hose Assembly 626-619

The Dorman HVAC Heater Hose Assembly 626-619 is designed to provide reliable coolant flow for heating systems in select GM vehicles. Engineered with molded rubber construction, this heater hose assembly ensures consistent performance for Cadillac, Chevrolet, GMC, and Hummer models.

• Constructed from durable rubber material with natural/no finish
• Molded assembly with a centerline length of 32 inches
• Consistent 0.58 inch inside diameter on both ends for uniform coolant flow
• Quick disconnect attachment on one end and hose attachment on the other
• Compatible with multiple GM trucks and SUVs including Silverado, Sierra, Escalade, Yukon, and Hummer H2

Detailed Product Features and Specifications

This HVAC heater hose assembly by Dorman features a molded design that eliminates the need for additional clamps or protective sleeves. Both ends have an inside diameter of 0.58 inches, ensuring a precise fit and efficient coolant transfer. The hose ends measure 1.32 inches and 0.92 inches in outside diameter respectively, accommodating the specific connection types required for proper installation. Rated for a maximum working pressure of 100 psi, this regular grade hose assembly is built to withstand typical operating conditions without the need for a heat shield or spring reinforcement.

Compatible Vehicles and Applications

The Dorman 626-619 heater hose assembly is compatible with a range of GM vehicles, including:

• Cadillac Escalade, Escalade ESV, and Escalade EXT
• Chevrolet Avalanche, Silverado 1500, 2500, 2500 HD, 3500, and 3500 HD
• GMC Sierra 1500, 2500 HD, 3500 HD, and Sierra 3500
• Hummer H2
• Suburban 1500 and 2500
• Tahoe
• Yukon, Yukon XL 1500, and Yukon XL 2500

Common Issues Addressed by This Heater Hose Assembly

• Leaking or cracked heater hoses causing coolant loss
• Reduced heater performance due to restricted coolant flow
• Hose deterioration from heat and pressure over time
• Improper fit or connection failures with original hoses
• Replacement of worn or damaged molded hose assemblies

Installation Notes and Tips

Installation of the Dorman 626-619 heater hose assembly requires no clamps as it is designed for quick disconnect and hose attachment fittings. Ensure the vehicle is cool and coolant system pressure is relieved before removal. Verify hose routing matches original configuration to avoid kinks or interference. Inspect connection points for corrosion or damage and replace any worn components to maintain a secure seal.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The 626-619 heater hose assembly undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.