Continental 63013 Engine Coolant Bypass Hose

Continental Molded Engine Coolant Bypass Hose

Continental 63013 is a molded engine coolant bypass hose built for coolant routing between the heater core, radiator bypass circuit, and related engine cooling components. It is formed to match the application shape and uses SAE 20R3EC Class D1 and D2 construction requirements for coolant service.

With a 0.940-inch inside diameter at both ends and an 11.820-inch hose length, this Continental Molded hose is sized for direct replacement in the listed Volkswagen and Audi applications. It also resists electrochemical degradation, helping maintain hose integrity in demanding cooling-system environments.

Key Features

• Part number: 63013
• Molded coolant bypass hose for engine cooling system routing
• 0.940-inch inside diameter at hose end 1
• 0.940-inch inside diameter at hose end 2
• 11.820-inch hose length
• Built to SAE 20R3EC Class D1 and D2 specifications
• Resistant to electrochemical degradation (ECR)

Application Details

Compatible with 1990-1992 Volkswagen Golf, 1990-1992 Volkswagen Jetta, 1981-1984 Volkswagen Jetta, 1982-1984 Volkswagen Vanagon, 1982-1983 Audi 4000, and 1981-1983 Volkswagen Rabbit Pickup. Continental 63013 is a molded replacement hose for vehicles that need the correct bypass routing and formed fitment in the cooling circuit.

This part cross-references Gates 21227 and Dayco 70990 for the same application.

What This Hose Helps Address

• Coolant leaks from a cracked or aged bypass hose
• Restricted coolant flow through the heater core or bypass circuit
• Softening, swelling, or deterioration from heat and coolant exposure
• Electrochemical damage that can shorten hose service life
• Fitment issues caused by using a straight hose where a molded hose is required

Installation Notes and Tips

Verify the hose routing against the original part before installation. Check the mating tubes, clamps, and nearby cooling-system components for corrosion, scale, or damage before installing Continental 63013. After installation, refill and bleed the cooling system according to the vehicle service procedure and inspect for leaks at operating temperature.

Quality Assurance

Continental Molded hoses are engineered to meet SAE 20R3EC Class D1 and D2 requirements and are built with resistance to electrochemical degradation for cooling-system durability.