Dorman 626-663 HVAC Heater Hose Assembly - Inlet

Overview of Dorman HVAC Heater Hose Assembly 626-663

The Dorman HVAC Heater Hose Assembly 626-663 is designed for reliable heating and cooling system performance in select GM vehicles. Engineered to meet OEM specifications, this molded assembly ensures proper coolant flow and system integrity for Buick Montana, Chevrolet Uplander, Pontiac Relay, and Saturn Terraza models.

• Constructed with durable aluminum, plastic, and rubber materials
• Includes clamps for secure attachment at all hose ends
• Molded branched hose assembly with three branches for efficient coolant routing
• Protective sleeve attached to resist abrasion and wear
• Compatible with heater systems requiring 1.126 to 1.161 inch inside diameter hose ends
• Maximum working pressure rated at 100 PSI
• Centerline length of 9.54 inches for precise fitment

Detailed Product Description

The Dorman 626-663 HVAC Heater Hose Assembly is a branched coolant hose designed to replace worn or damaged heater hoses in specific GM minivans and crossovers. This assembly features a combination of aluminum, plastic, and rubber components to provide flexibility, durability, and resistance to heat and pressure. The molded hose shape ensures a precise fit within the engine bay, reducing the risk of leaks or kinks. Each hose end is secured with included clamps, facilitating a tight seal and easy installation. The attached protective sleeve adds an extra layer of protection against abrasion from engine components or vibration.

Compatible Vehicles and Applications

This heater hose assembly is compatible with the following vehicles:

• Buick Montana
• Chevrolet Uplander
• Pontiac Relay
• Saturn Terraza

It is specifically designed for HVAC systems requiring a branched heater hose assembly with three branches and hose end diameters ranging from 1.126 to 1.161 inches inside diameter.

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 exposure
• Loose or damaged hose clamps leading to coolant leaks
• Wear from abrasion or contact with engine components

Installation Notes and Tips

• Ensure engine is cool before beginning installation to avoid burns
• Use the included clamps to secure all hose ends tightly
• Inspect surrounding components for wear or damage during replacement
• Verify hose routing matches original configuration to prevent kinks
• Check coolant levels and system pressure after installation

Quality Assurance and Warranty

Dorman manufactures this heater hose assembly to meet or exceed OEM standards for fit, form, and function. The assembly is constructed from high-quality materials including aluminum, plastic, and rubber to withstand typical operating conditions. While specific warranty details are not provided, Dorman products generally come with a limited warranty against defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.