Keep coolant moving between the radiator and engine with the Dayco Radiator Coolant Hose 70399, a curved, molded coolant hose built for a wide span of classic and vintage applications. It's a direct-fit replacement for vehicles such as the 1970-1972 Chevrolet Camaro [V8-6.6L], the 1984-2000 Jeep Cherokee [L4-2.5L], and many American Motors, Dodge, and Ford models — see the "Vehicles it fits" section for the full list.
- EPDM construction: black EPDM hose material for the engine cooling circuit.
- Meets SAE standards: SAE J20R4 Class D-1 and SAE J1684 Type EC.
- Dual I.D. design: a dual-inside-diameter hose with a different inside diameter at each end.
- Curved molded shape: pre-formed curved hose with a centerline length of 12.5 inches.
As a radiator hose, it routes coolant so the water pump can circulate it through the radiator and back to the engine. If an old hose has cracked, hardened, bulged, or begun seeping, replacing it helps restore a properly sealed coolant path. Contains no heat shield and no protective sleeve. Country of origin: Pakistan.
Interchange: Manufacturer part number 70399.
This part cross-references / interchanges with the following part numbers:
22031M, 22036M, 22092M, MC216, C0559, C0931, MH284, 20539, 20559, 20931, 60817, 60977, 7312, 7424, 7656, CH229, 3229402, 8953 000 012, 1937429, 1937430, 52003790, D1AE-8B273-CA, D1AZ-8286-C, 3973193
Frequently Asked Questions
What does the Dayco 70399 do?
It's a radiator coolant hose that carries coolant between the engine and radiator so the water pump can circulate it through the cooling system.
What vehicles does this hose fit?
It fits applications including the 1970-1972 Chevrolet Camaro [V8-6.6L], 1984-2000 Jeep Cherokee [L4-2.5L], plus AMC, Dodge, and Ford models. See the "Vehicles it fits" section for the full list.
What is this hose made of?
It's made of black EPDM hose material and meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards.
What does "Dual I.D. Hose" mean here?
It's a dual-inside-diameter hose, meaning it has a different inside diameter at each end. It's a pre-formed curved hose with a 12.5-inch centerline length.
What are signs this hose may need replacing?
Cracking, hardening, bulging, soft spots, or coolant seepage are signs a hose may need replacing. If a failed hose is the cause of a coolant leak, this replaces it.
