Dayco Radiator Coolant Hose P/N:70539
Carry coolant between the engine and the radiator with the Dayco curved radiator hose, part number 72775. It is an upper radiator coolant hose made of EPDM and fitted with a protective sleeve. It fits many vehicles, among them the 2014-2020 Chevrolet Silverado 1500 4.3L / 5.3L / 6.2L, 2014-2018 GMC Sierra 1500 4.3L / 5.3L / 6.2L and 2015-2020 Chevrolet Tahoe 5.3L / 6.2L. It is a direct-fit replacement for the listed applications with V6-4.3L, V8-5.3L or V8-6.2L engines, and engine coverage varies by model and year. See the Buyer's Guide tab for the full list.
Signs this upper hose may need replacing include:
Diagnose the cause first. If a worn hose is at fault, this hose replaces it. The listed applications use one hose, and it is sold individually. Follow the vehicle service information for clamp condition and for refilling and bleeding the cooling system. Country of origin: Mexico.
Interchange: 22805L · 24342 · 17008
This part cross-references / interchanges with the following part numbers:
Which vehicles does the Dayco 72775 radiator hose fit?
It fits many vehicles, among them the 2014-2020 Chevrolet Silverado 1500 4.3L / 5.3L / 6.2L, 2014-2018 GMC Sierra 1500 4.3L / 5.3L / 6.2L and 2015-2020 Chevrolet Tahoe 5.3L / 6.2L. Check the Buyer's Guide tab for your year and engine.
What does an upper radiator coolant hose do?
It carries engine coolant between the engine and the radiator on the upper side of the cooling system, so coolant can circulate through the radiator.
What size is this Dayco coolant hose?
Both ends have a 1 5/16-inch (1.31-inch) inside diameter and a 1 21/32-inch outside diameter. The centerline length is 19 inches.
What is the hose made of, and what specifications does it carry?
It is made of EPDM and comes with a protective sleeve. It carries the SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.
What are signs the upper radiator hose may need replacing?
Coolant leaks at the ends, a soft, swollen or cracked hose, or a dropping coolant level can point to a worn hose. Diagnose the cause first; if the hose is at fault, this one replaces it.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.