Dayco 71244 Radiator Coolant Hose - Lower or Upper

Dayco Curved Radiator Hose 71244

Dayco 71244 is a curved radiator coolant hose built for lower cooling-system routing on select Chevrolet and GMC vans and vans-based chassis applications. It uses EPDM construction and a dual I.D. hose profile to match the different end diameters required by the application.

Compatible With 1985-1995 Chevrolet G10, lower; 1985-1995 Chevrolet G20, lower; 1985-1995 Chevrolet G30, lower; 1985-1985 Chevrolet P20, lower; 1985-1992 Chevrolet P30, lower; 1985-1995 GMC G1500, lower; 1985-1995 GMC G2500, lower; 1985-1996 GMC G3500, lower; and 1991-1995 GMC P3500, lower. This part cross-references Gates 21618 and NAPA 8336 for the same application.

Key Features

• EPDM rubber construction for coolant-system service
• Black finish
• Dual I.D. hose design with 1 1/2 in. end 1 inside diameter and 1 13/16 in. end 2 inside diameter
• Curved radiator hose profile for lower hose routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line for application-specific cooling-system replacement

Detailed Description

Dayco 71244 is a radiator coolant hose for lower-position cooling circuits on select Chevrolet G10, G20, G30, P20, and P30 models, plus GMC G1500, G2500, G3500, and P3500 applications. The curved shape supports the routing used in these vehicles, while the dual I.D. design addresses the different connection sizes at each end. If you are replacing a lower radiator hose on a Chevrolet G30 or GMC G3500, this hose provides the dimensional match needed for the cooling system connection points.

The Dayco Curved Radiator Hose product line focuses on direct-fit hose geometry and material selection for coolant transfer service. Part number 71244 is made from EPDM and specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards, making it a practical replacement choice for vehicles that require a formed lower radiator hose with unequal end diameters.

What It Helps Address

• Cracked or hardened lower radiator hose material
• Coolant leaks at the hose connection points
• Improper hose fit due to mismatched end diameters
• Routing issues on curved lower hose applications
• Cooling-system service on aging Chevrolet and GMC vans

Installation Notes and Tips

Verify the lower hose routing and end diameters before installation. Confirm that the vehicle uses the listed application and that the hose path matches the curved profile of the original part. Inspect adjoining necks, clamps, and coolant passages for wear or corrosion before installing Dayco 71244. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Dayco manufactures this hose to published SAE material and performance specifications for coolant-system service. The EPDM construction and application-specific dimensions support consistent replacement on the listed Chevrolet and GMC models.