Dayco 71359 Engine Coolant Bypass Hose - Pipe To Thermostat

Dayco Curved Radiator Hose 71359

Dayco 71359 is an engine coolant bypass hose built for select Chrysler, Dodge, Plymouth, and Mitsubishi applications. This curved radiator hose uses EPDM construction and a single I.D. hose design to support coolant routing in compact engine bays.

Compatible With Chrysler Voyager and Grand Voyager, Dodge Caravan and Grand Caravan, and Plymouth Voyager cooling system applications, this hose is sized with 7/16-inch inside diameters at both ends for a direct-fit style replacement.

Key Features

• EPDM rubber construction for coolant system service
• Black finish for a factory-style appearance
• Single I.D. hose design
• 7/16-inch inside diameter at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line for formed hose routing

Product Details

The Dayco Curved Radiator Hose line is made for formed coolant routing where a straight hose will not follow the original path cleanly. Part number 71359 is an engine coolant bypass hose that helps maintain proper coolant flow between connected engine components while matching the bend profile needed in the vehicle’s cooling system. This makes it a practical replacement for aging hoses on Chrysler LeBaron, Dodge Spirit, Plymouth Acclaim, Mitsubishi Montero, and related fitments.

This part cross-references Gates 21784 and NAPA 8474 for the same application. Dayco 71359 is also referenced by ACDelco 14233S and Duralast A71359.

What It Helps Address

• Cracked or hardened coolant bypass hose material
• Coolant seepage at hose connections
• Improper hose routing from a misshaped replacement hose
• Cooling system service on older Chrysler, Dodge, Plymouth, and Mitsubishi vehicles
• Fitment issues caused by incorrect hose diameter or bend profile

Installation Notes and Tips

Verify the hose path, end diameters, and routing before installation. Inspect adjoining fittings, clamps, and coolant passages for wear or corrosion, and replace any damaged components before refilling the system. Confirm the application against the vehicle’s cooling layout, especially on 1987-2000 Dodge Caravan, 1992-2000 Dodge Grand Caravan, 1987-2000 Plymouth Voyager, and 1990-1995 Chrysler LeBaron models.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and performance standards for coolant system service.