Continental 63735 Engine Coolant Bypass Hose

Continental 63735 Engine Coolant Bypass Hose

Continental 63735 is a molded engine coolant bypass hose built for vehicles that use a 1.000-inch inside diameter at both ends and a 6.500-inch hose length. It is engineered for glycol-based coolant routing between the heater core, radiator bypass circuits, and related engine cooling components.

For Dodge D150, D250, D350, W150, W250, and Ramcharger applications, this molded hose provides the correct shape and coolant passage support for service replacement. The Continental 63735 part number is also listed across multiple interchange references for the same application.

Key Features

• Molded engine coolant bypass hose for cooling-system service
• 1.000-inch inside diameter at both ends
• 6.500-inch hose length
• Built for glycol-based coolant transfer
• Meets SAE 20R3EC Class D1 and D2 specifications
• Resistant to electrochemical degradation (ECR)
• Continental molded hose line construction for application-specific routing

Product Details

Continental 63735 is intended for coolant flow between the heater core, radiator bypass path, and other engine cooling components where a molded hose profile is required. The molded design helps match the routing used on classic Chrysler, Dodge, and Plymouth vehicles, including Dodge Charger, Dart, Challenger, Monaco, Aspen, Dakota, and B-series truck applications. This hose is a direct-fit style replacement for many 1970s through early 1990s vehicles, including Dodge D150 and Dodge Ramcharger models.

The Continental Molded line focuses on application-specific hose geometry for cooling-system service. This part cross-references Dayco 70637 and Four Seasons 20693 for the same application.

Common Problems This Hose Can Address

• Coolant leakage from a cracked or aged bypass hose
• Improper coolant routing through the heater core or bypass circuit
• Softening, swelling, or collapse of an original rubber hose
• Service replacement for a hose damaged by heat and age
• Cooling-system maintenance on Dodge D250, D350, and Ramcharger platforms

Installation Notes and Tips

• Verify the hose routing and molded shape against the removed part before installation.
• Confirm both connection points match the 1.000-inch inside diameter specification.
• Inspect adjoining heater and coolant fittings for corrosion, scale, or pitting before assembly.
• Use fresh coolant and bleed the system according to the vehicle service procedure after replacement.
• Check for leaks after the engine reaches operating temperature.

Quality Assurance

Continental 63735 is manufactured to SAE 20R3EC Class D1 and D2 specifications and includes resistance to electrochemical degradation for cooling-system durability. It is a molded replacement hose from Continental’s Molded product line for vehicles requiring this specific coolant bypass configuration.