Continental 63987 HVAC Heater Hose - Heater To Outlet, Heater To Pipe-2 or Left

Continental Molded HVAC Heater Hose 63987

Continental 63987 is a molded HVAC heater hose built to move glycol-based coolant between the heater core, radiator bypass circuit, and related engine cooling components. With a 0.690 in. inside diameter at both ends and a 12.520 in. molded length, it is sized for direct replacement on listed applications, including Hyundai Azera and select Buick, Chevrolet, Pontiac, and Oldsmobile models.

Key Features

• 0.690 in. inside diameter at hose end 1
• 0.690 in. inside diameter at hose end 2
• 12.520 in. molded hose length
• Built to SAE 20R3EC Class D1 and Class D2 specifications
• Resistant to electrochemical degradation (ECR)
• Continental Molded product line for formed heater hose routing

Product Details

This Continental heater hose, part number 63987, is engineered for coolant transfer in HVAC and engine cooling circuits where a molded hose shape is required. The molded design helps match factory routing on vehicles such as 2006-2011 Hyundai Azera, 1995-1999 Chevrolet Lumina, and 1996-1999 Pontiac Grand Prix. It also cross-references Dayco 86106 for the same application.

The Continental Molded line focuses on formed hose geometry for vehicles that need a specific bend profile rather than a straight universal hose. That makes Continental 63987 a practical OE-style replacement when servicing heater core supply or return lines, bypass routing, or other coolant passages on the listed platforms.

What It Helps Address

• Coolant leaks at a worn heater hose
• Restricted heater flow from hose deterioration
• Incorrect routing caused by a collapsed or misshaped hose
• Loss of cabin heat from compromised coolant circulation
• Service replacement for molded heater hose routing on listed vehicles

Installation Notes and Tips

• Verify hose routing, end diameters, and molded shape against the removed part before installation.
• Inspect adjoining heater core tubes, bypass pipes, and clamps for corrosion or wear.
• Drain coolant safely and refill with the correct glycol-based coolant after installation.
• Check for leaks and confirm proper heater operation once the engine reaches operating temperature.
• Use the fitment listing to confirm the exact application: Fits 2006-2011 Hyundai Azera, Left; Fits 2008-2010 Hyundai Azera, Heater To Outlet; Fits 1997-1999 Buick Century, Heater To Pipe-2; Fits 1995-1999 Chevrolet Lumina, Heater To Pipe-2; Fits 1995-1999 Chevrolet Monte Carlo, Heater To Pipe-2; Fits 1996-1999 Pontiac Grand Prix, Heater To Pipe-2; Fits 1994 Pontiac Grand Prix, Heater To Pipe-2; Fits 1996-1997 Oldsmobile Cutlass Supreme, Heater To Pipe-2; Fits 1994 Oldsmobile Cutlass Supreme, Heater To Pipe-2; Fits 1994-1996 Buick Regal, Heater To Pipe-2.

Quality Assurance

Continental manufactures this hose to SAE 20R3EC Class D1 and D2 requirements and includes resistance to electrochemical degradation for added durability in coolant service. Part number 63987 is built for the listed molded heater hose applications and direct-fit replacement use.