Gates 18738 HVAC Heater Hose

Reliable HVAC Heater Hose for Chevrolet, Toyota, and More

The Gates Molded Heater Hose 18738 is engineered to provide dependable heating system performance for select Chevrolet, Toyota, Pontiac, Oldsmobile, and Isuzu vehicles. Designed with precision molding and durable EPDM material, this heater hose ensures a secure fit and long-lasting operation in your vehicle's HVAC system.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and easy installation
• Centerline length of 246 mm (9.7 inches) for accurate replacement
• Consistent inside diameter of 0.62 inches (16 mm) on both ends
• Compatible with multiple makes and models including Toyota Camry, Corolla, RAV4, and Chevrolet Lumina, Monte Carlo

About the Gates Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on delivering hoses that are pre-formed to match specific vehicle applications. This eliminates the need for bending or shaping during installation, reducing the risk of kinks or leaks. The molded construction of part number 18738 ensures a precise fit for the HVAC systems of various Chevrolet, Toyota, Pontiac, Oldsmobile, and Isuzu models, supporting reliable heater core performance.

Product Details and Specifications

This HVAC heater hose features a uniform inside diameter of 0.62 inches (16 mm) on both ends, providing consistent flow and compatibility with OEM connections. The centerline length measures 246 mm (9.7 inches), matching factory specifications for a direct replacement. Made from EPDM, the hose resists heat, ozone, and coolant chemicals, which helps maintain system integrity under demanding operating conditions. The molded design enhances durability and fitment accuracy, reducing installation time and potential failure points.

Common Applications and Problem Resolution

• Replacement of cracked or leaking heater hoses in Chevrolet Lumina and Monte Carlo HVAC systems
• Restoring proper coolant flow in Toyota Camry and Corolla heating circuits
• Addressing heater core overheating issues in Pontiac Grand Prix and Oldsmobile Cutlass Supreme
• Eliminating coolant leaks caused by deteriorated hoses in Isuzu Trooper and Toyota RAV4
• Ensuring reliable heater performance in Toyota Solara and Celica models

Installation Notes and Tips

Before installation, verify the hose length and diameter match your vehicle’s specifications. The molded design of the Gates 18738 heater hose allows for straightforward replacement without modification. Use appropriate clamps to secure the hose ends and check for leaks after installation. It is recommended to drain the cooling system partially to avoid spills and ensure a clean connection.

Quality Assurance and Warranty

Gates Molded Heater Hose 18738 is manufactured to meet or exceed OEM standards for HVAC heater hoses. The EPDM material and molded construction provide resistance to heat and chemical degradation, contributing to long service life. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship.