Continental 63304 HVAC Heater Hose - Heater To Pipe-2 or Reservoir To Engine

Continental HVAC Heater Hose 63304

Continental 63304 is a molded HVAC heater hose built for coolant transfer in the vehicle cooling system. With a 0.750 in. inside diameter and 17.640 in. length, it matches the routing and connection points used on select Chevrolet Aveo, Aveo5, Pontiac Wave, Pontiac Wave5, Suzuki Swift+, Buick Park Avenue, Oldsmobile 88, Oldsmobile 98, and Pontiac Bonneville applications.

Continental’s molded hose line focuses on accurate shape and fit for coolant routing where a straight hose will not follow the factory path. Part number 63304 is specified for reservoir-to-engine and heater-to-pipe connections, depending on vehicle application.

Key Features

• 0.750 in. inside diameter at both ends for matched coolant hose connections
• 17.640 in. molded hose length for factory-style routing
• Transfers glycol-based coolant through the radiator and related cooling system components
• Meets or exceeds SAE 20R4EC Class D1 radiator hose specifications
• Fits select Chevrolet Aveo and Aveo5, Pontiac Wave and Wave5, Suzuki Swift+, Buick Park Avenue, Oldsmobile 88, Oldsmobile 98, and Pontiac Bonneville applications

Product Details

Continental 63304 is a molded radiator and heater hose designed for coolant circulation in the HVAC and engine cooling system. The hose dimensions are important for proper sealing and routing: 0.750 in. inside diameter on hose end 1, 0.750 in. inside diameter on end 2, and a 17.640 in. overall length. This makes it a direct-fit style option for vehicles that require a molded hose rather than a universal straight hose. This part cross-references Davico Mfg 19674 for the same application.

Common Problems This Hose Can Address

• Coolant leakage at a cracked or aged heater hose
• Improper routing caused by a collapsed or misshaped hose
• Restricted coolant flow through the heater or reservoir-to-engine circuit
• Softening, swelling, or deterioration from heat and coolant exposure
• Service replacement for a hose that no longer holds a secure seal

Installation Notes and Tips

• Verify the hose path and connection points before installation, especially on molded applications.
• Match the 0.750 in. hose diameter to the existing fittings for proper sealing.
• Inspect adjoining clamps, pipes, and coolant necks for wear before reassembly.
• Confirm vehicle-specific routing for Fits 2004-2008 Chevrolet Aveo, Reservoir To Engine; Fits 2006-2008 Chevrolet Aveo5, Reservoir To Engine; Fits 2005-2008 Pontiac Wave, Reservoir To Engine; Fits 2006-2008 Suzuki Swift+, Reservoir To Engine; Fits 2005-2007 Pontiac Wave5, Reservoir To Engine; Fits 2004-2005 Suzuki Swift+, Reservoir To Engine; Fits 1993-1995 Buick Park Avenue, Heater To Pipe-2; Fits 1994-1995 Oldsmobile 88, Heater To Pipe-2; Fits 1992-1995 Oldsmobile 98, Heater To Pipe-2; Fits 1991 Pontiac Bonneville, Heater To Pipe-2.

Quality Assurance

Continental manufactures this hose to meet or exceed SAE 20R4EC Class D1 radiator hose specifications, supporting consistent coolant-system performance across the listed Chevrolet Aveo, Pontiac Wave, and Suzuki Swift+ fitments, as well as the Buick, Oldsmobile, and Pontiac heater hose applications.