Dayco 71011 Radiator Coolant Hose - Lower, Upper or Upper - Pipe To Radiator

Dayco Curved Radiator Hose 71011

Dayco 71011 is a curved radiator coolant hose built from EPDM for dependable coolant routing in select Jeep, Dodge, and Buick applications. This dual I.D. hose uses a 1 1/2 in. inside diameter at one end and a 1 3/4 in. inside diameter at the other, making it a direct-fit solution for vehicles that require a stepped lower or upper radiator hose.

The Dayco Curved Radiator Hose line is focused on application-specific cooling system replacement parts. Part number 71011 follows the OE-style curved shape needed to route coolant cleanly around engine bay components while meeting SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.

Key Features

• EPDM construction for coolant system service
• Black finish for a factory-style appearance
• Dual I.D. hose design with 1 1/2 in. and 1 3/4 in. ends
• Curved radiator hose profile for routed fitment
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• No heat shield and no protective sleeve

Fitment Details

• Fits 1985-1986 Jeep CJ7, lower
• Fits 1981-1983 Jeep CJ7, lower
• Fits 1976-1979 Jeep CJ7, lower
• Fits 1985 Jeep Scrambler, lower
• Fits 1982-1983 Jeep Scrambler, lower
• Fits 1984 Jeep CJ7, lower; radiator coolant hose for H.D. vehicles
• Fits 1984 Jeep Scrambler, lower; radiator coolant hose for H.D. vehicles
• Fits 1981 Jeep Scrambler, lower; radiator coolant hose for H.D. vehicles
• Fits 1981-1983 Jeep CJ5, lower
• Fits 1975-1979 Jeep CJ5, lower
• Fits 1981 Jeep Scrambler, lower; w/o H.D. cool
• Fits 1980 Jeep CJ5, lower; vehicles without air conditioning
• Fits 1980 Jeep CJ7, lower; vehicles without air conditioning
• Fits 1969 Dodge Dart, upper; vehicles without air conditioning
• Fits 1951 Buick Roadmaster, upper

What It Helps Address

• Cracked or aged radiator hose material
• Coolant leaks at the upper or lower hose connection
• Incorrect hose routing in curved applications
• Replacement needs for stepped dual-diameter hose layouts
• Cooling system service on Jeep CJ5, CJ7, and Scrambler models

Installation Notes

Verify end diameters, hose routing, and position before installation. This hose is listed for lower and upper radiator applications depending on vehicle fitment, including Jeep CJ5, Jeep CJ7, Jeep Scrambler, Dodge Dart, and Buick Roadmaster applications. Confirm whether the vehicle is equipped with air conditioning or heavy-duty cooling where noted in the fitment data. This part cross-references Gates 20065 for the same application.

Quality Assurance

Dayco 71011 is manufactured to published SAE cooling hose specifications and uses EPDM construction for radiator coolant service. The part number 71011 is also referenced across multiple aftermarket and OE catalogs, including ACDelco, Chrysler, General Motors, Mopar, and NAPA listings for matching applications.