Continental 64151 HVAC Heater Hose

Continental 64151 Heater Hose Overview

Continental 64151 is a molded HVAC heater hose for transferring glycol-based coolant between the heater core, radiator bypass circuits, and related engine cooling components. Built to SAE 20R3EC Class D1 and D2 specifications, this hose is engineered for consistent coolant flow and resistance to electrochemical degradation.

With a 0.690-inch inside diameter at both ends and a 15.710-inch length, this molded hose is sized for direct routing in select applications. It is a practical replacement choice for vehicles such as the Pontiac Grand Am and Chevrolet Malibu when the original hose needs a formed coolant path.

Key Features

• Brand: Continental Molded
• Part number: 64151
• HVAC heater hose for coolant transfer to and from the heater core
• Also used in radiator bypass and other cooling system routing
• SAE 20R3EC Class D1 and D2 specification compliance
• Resistant to electrochemical degradation (ECR)
• 0.690 in. inside diameter on both ends
• 15.710 in. molded hose length

Product Details

Continental 64151 is a molded heater hose designed for coolant circulation in the vehicle heating and cooling system. The molded shape helps maintain the intended hose path in tight engine compartments, while the ECR-resistant construction addresses a common failure mode in modern cooling systems. This part number is used across multiple GM applications, including Pontiac Grand Am, Chevrolet Malibu, and Oldsmobile Alero models, making it a relevant search match for drivers looking for a molded heater hose replacement for those vehicles.

This part cross-references Gates 19760 for the same application.

Common Problems This Hose Can Address

• Coolant leakage from a cracked or deteriorated heater hose
• Restricted coolant flow through a damaged molded hose
• Improper hose routing after the original formed hose fails
• Cooling system service needs on vehicles with heater core or bypass hose routing
• Replacement of an aged hose showing electrochemical degradation

Installation Notes and Fitment

Compatible With 1999-2005 Pontiac Grand Am, radiator to tank; 1999-2005 Pontiac Grand Am, radiator to reservoir (lower); 2003-2004 Cadillac CTS, radiator to valve; 1999-2004 Oldsmobile Alero, radiator to reservoir (lower); 2000-2003 Chevrolet Impala, pipe-1 to water pump; 1997-2003 Chevrolet Malibu, radiator to tank; 1997-2003 Chevrolet Malibu, radiator to reservoir (lower); 1998-2003 Chevrolet Monte Carlo, pipe-1 to water pump; 1999-2002 Oldsmobile Alero, radiator to tank; 1999-2001 Oldsmobile Alero, radiator to reservoir; 1998-1999 Oldsmobile Intrigue, pipe-1 to water pump; 1991-1996 Buick Regal, pipe-1 to water pump; 1994-1996 Cadillac Fleetwood, tee to tank.

Verify hose routing, inside diameter, and molded shape against the original part before installation. Because some listed applications are cut-to-fit and others are molded, confirm the exact position and routing on the vehicle before service. For Pontiac Grand Am and Chevrolet Malibu applications, match the radiator-to-tank or lower reservoir routing shown in the fitment data.

Quality Assurance

Continental is a recognized aftermarket brand with molded hose construction built to published SAE 20R3EC Class D1 and D2 requirements. The ECR-resistant design supports long-term cooling system service in applications where electrochemical degradation is a concern.