Dayco 71190 Radiator Coolant Hose - Lower - Radiator To Thermostat, Upper or Upper - Pipe To Radiator

Dayco Curved Radiator Hose 71190

Dayco 71190 is a curved radiator coolant hose built for cooling-system service where a formed EPDM hose is required. This black single I.D. hose uses 1 1/4-inch inside diameters at both ends and follows SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator hose applications.

Compatible With select Chevrolet Impala, Hyundai Sonata, Hyundai Scoupe, Toyota Celica, and Pontiac Fiero applications, this Dayco Curved Radiator Hose line is shaped for direct routing in upper and lower cooling-system positions. The Dayco 71190 part number is also referenced by OE and aftermarket cross numbers for the same application.

Key Features

• Brand: Dayco Curved Radiator Hose
• Part number: 71190
• Material: EPDM rubber
• Color: Black
• Single I.D. hose construction
• 1 1/4-inch inside diameter at both ends
• SAE J20R4 Class D-1 and SAE J1684 Type EC specification
• No heat shield and no protective sleeve

Product Details

This radiator coolant hose is formed for curved routing in cooling systems where a straight hose will not follow the factory path. The EPDM construction is suited to coolant exposure and underhood temperature cycling, while the molded shape helps maintain proper hose routing between the radiator, engine, or thermostat housing depending on the vehicle application. Dayco 71190 is a direct-fit style replacement for vehicles that use a 1 1/4-inch curved hose in the listed positions.

This part cross-references Duralast C71190 and Toyota 16572-74110 for the same application.

Vehicle Fitment

• Fits 2006-2011 Chevrolet Impala, Upper, w/Police Pkg.; Curved Radiator Hose
• Fits 1994-1998 Hyundai Sonata, Upper, Curved Radiator Hose
• Fits 1993-1995 Hyundai Scoupe, Upper, Curved Radiator Hose
• Fits 1990-1993 Toyota Celica, Lower - Radiator To Thermostat, Curved Radiator Hose
• Fits 1984-1987 Pontiac Fiero, Upper - Pipe To Radiator, Curved Radiator Hose

Common Cooling System Issues

• Cracked or split radiator hose
• Coolant leakage at a curved hose section
• Soft, swollen, or heat-aged hose material
• Incorrect hose routing after service
• Loss of proper coolant flow through the radiator circuit

Installation Notes

Verify the hose end diameters, routing shape, and position before installation. Match the hose to the vehicle’s upper or lower cooling-system location as listed, and confirm clearance around nearby components so the curved profile follows the factory path without twisting. Inspect hose clamps, mating necks, and coolant condition during replacement.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for radiator coolant hose applications. The EPDM construction and molded form support consistent fitment in the specified Chevrolet Impala, Hyundai Sonata, Hyundai Scoupe, Toyota Celica, and Pontiac Fiero applications.