Dayco 72775 Radiator Coolant Hose - Upper

Curved Upper Radiator Hose for GM Trucks and SUVs

Dayco 72775 is a curved upper radiator coolant hose built for select Chevrolet, GMC, and Cadillac applications. Made from EPDM with a black finish and a protective sleeve, it is shaped for upper cooling-system routing on covered vehicles.

Key Features

• EPDM construction for coolant-system service
• Black curved radiator hose design for upper hose routing
• Single I.D. hose with 1 5/16 in. inside diameter at both ends
• Protective sleeve included; heat shield not included
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line, Part Number 72775

Product Details

Dayco Curved Radiator Hose 72775 is engineered as an upper radiator coolant hose for vehicles that use a curved hose path between the engine and radiator. The EPDM rubber construction is suited for cooling-system temperatures and coolant exposure, while the protective sleeve adds an extra layer of abrasion resistance in routed areas. This hose measures 1 5/16 inches inside diameter at both ends and follows a single I.D. hose design for direct replacement use on the listed applications. Compatible With 2014-2020 Chevrolet Silverado 1500, upper; 2015-2020 Chevrolet Tahoe, upper; and 2015-2020 GMC Yukon, upper. It also serves 2015-2020 Cadillac Escalade and Escalade ESV upper radiator hose applications. Dayco 72775 is a practical replacement for GM cooling-system service where the original upper hose has aged, softened, or cracked.

What It Is Used For

• Replacing a leaking or cracked upper radiator hose
• Restoring coolant flow between the engine and radiator
• Addressing hose swelling, hardening, or soft spots
• Correcting fitment issues on a curved upper hose route
• Servicing cooling systems on Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade models

Installation Notes and Tips

Verify the hose routing, end diameters, and upper-position fitment before installation. Inspect hose clamps, radiator necks, and adjoining coolant pipes for wear or corrosion before reassembly. After installation, refill the cooling system with the correct coolant and check for leaks at operating temperature. Fits 2014-2018 GMC Sierra 1500, upper; Fits 2019 GMC Sierra 1500 Limited, upper; Fits 2019 Chevrolet Silverado 1500 LD, upper.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for cooling-system hose applications. Part Number 72775 is built for the specified GM fitments and cooling-system service conditions.