Gates 19759 HVAC Heater Hose - Heater To Engine

Gates Molded Heater Hose for Tight Engine Bays

The Gates 19759 molded heater hose is an OEM-style coolant hose built for smaller, tighter engine compartments. It is formed to match the factory routing used on select Buick, Pontiac, and other GM applications, with a 0.75 in. inside diameter at both ends and a 24.3 in. centerline length.

Made from EPDM, this molded heater hose is suitable for coolant, water, and air service, and it is also approved for marine applications. If you need a replacement for a molded heater hose on a 2000-2005 Buick LeSabre, Buick Park Avenue, or Pontiac Bonneville, Gates 19759 provides the correct shape and hose sizing for the heater-to-engine route.

Key Features

• OEM-style molded heater hose for factory routing
• EPDM construction for coolant, water, and air applications
• 0.75 in. inside diameter at both ends
• 24.3 in. centerline length for molded fitment
• Designed for heater-to-engine routing in compact engine bays
• Approved for marine applications

Detailed Description

Gates Molded Heater Hose 19759 is a formed replacement hose designed to follow the original hose path in vehicles with limited underhood space. The molded shape helps maintain proper routing around nearby components, while the EPDM material is selected for use in cooling-system service. This part cross-references ACI 88416 and Continental 64173 for the same application. It is a direct-fit option for 2000-2005 Buick LeSabre, 2000-2005 Buick Park Avenue, and 2000-2005 Pontiac Bonneville heater-to-engine applications.

Common Problems This Hose Can Address

• Cracked or hardened heater hose material
• Coolant leaks at a molded hose section
• Incorrect hose routing after a previous repair
• Restricted fitment in tight engine compartments
• Replacement needs for heater-to-engine coolant transfer

Installation Notes and Tips

Verify the hose routing, end diameters, and centerline length before installation. Compare the original molded shape to Gates 19759 to confirm the heater-to-engine path matches your vehicle. Inspect adjoining clamps, fittings, and nearby coolant components for wear before reassembly, and refill and bleed the cooling system according to the vehicle service procedure.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement built to match factory fit and routing requirements. The EPDM construction and molded design support dependable service in coolant-system applications, including approved marine use.