Gates 28481 HVAC Heater Hose - Heater To Radiator, Heater To Water Pump or Valve To Engine

Overview of Gates 90 Degree Molded Heater Hose 28481

The Gates 90 Degree Molded Heater Hose 28481 is engineered for reliable HVAC system performance in select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles. Designed with durable EPDM material and precise dimensions, this molded heater hose ensures proper coolant flow and fitment for models like the Bonneville, Caprice, DeVille, and Impala.

• Constructed from high-quality EPDM for heat and chemical resistance
• 90 degree molded design for optimal routing and fit
• Inside diameter of 0.75 inches (19 mm) on both ends
• Centerline length of 64 inches (1626 mm) for extended reach
• Arm lengths of 4 inches (102 mm) and 60 inches (1524 mm) for precise installation
• Compatible with multiple GM makes and models including Buick LeSabre and Pontiac Grand Prix

About the 90 Degree Molded Heater Hose Product Line

The Gates 90 Degree Molded Heater Hose product line features hoses specifically designed with molded bends to match OEM specifications. This design reduces stress on the hose and improves coolant flow efficiency within the HVAC system. The molded construction of part number 28481 eliminates the need for additional fittings or clamps at the bend, providing a cleaner and more reliable installation.

Detailed Product Description

This HVAC heater hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and automotive fluids, making it suitable for long-term use in vehicle heating systems. Both ends of the hose have an inside diameter of 0.75 inches (19 mm), ensuring compatibility with standard heater core and engine connections. The 90 degree angle molded into the hose allows for precise routing in tight engine compartments, reducing the risk of kinks or leaks. With a centerline length of 64 inches (1626 mm) and arm lengths of 4 inches (102 mm) and 60 inches (1524 mm), this hose fits a range of GM vehicles including the Chevrolet Monte Carlo and Cadillac Fleetwood.

Common Applications and Issues Addressed

• Replacement of cracked or leaking heater hoses in Buick Regal and Oldsmobile Cutlass Supreme
• Resolving coolant leaks causing insufficient cabin heating in Pontiac Parisienne
• Restoring proper coolant flow in HVAC systems of Chevrolet Caprice and Cadillac DeVille
• Eliminating hose kinks and blockages due to improper hose routing
• Maintaining system pressure and preventing overheating in Buick LeSabre and Pontiac Grand Prix

Installation Notes and Tips

Ensure the vehicle’s cooling system is fully depressurized and cooled before removing the old heater hose. Verify the inside diameter and molded angle match the original hose to avoid fitment issues. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the EPDM material. Inspect surrounding components for wear or damage during installation to prevent future leaks.

Quality Assurance and Warranty

Gates manufactures the 90 Degree Molded Heater Hose 28481 to meet or exceed OEM specifications for durability and performance. The EPDM construction provides resistance to heat, ozone, and automotive fluids, contributing to a longer service life. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship.