Dayco Radiator Coolant Hose P/N:70539
Keep coolant flowing between the engine and radiator with this Dayco coolant hose, part number 81281. It is a standard flex radiator hose with a matching 1.75-inch inside diameter at each end. It fits many vehicles, among them the 1932 Cadillac 370 B (V12-6.0L), 1946-1949 Chrysler Royal Series (L6-4.1L) and 1946-1951 Ford Deluxe (V8-3.9L).
A radiator hose carries hot coolant under pressure, so it can wear over time. It may need replacing if you see coolant seeping at the hose, a hose that feels soft, swollen or cracked, or steady coolant loss. Overheating can have other causes, so diagnose the cooling system first. If a worn hose is the problem, this part replaces it.
Quantity varies by application. Most listed vehicles use one hose, while some use two. The listed applications cover a wide range of Cadillac, Chrysler, DeSoto, Ford, Lincoln, Mercury and Plymouth models. See the Buyer's Guide tab for the full list.
Country of origin: Pakistan.
Interchange: 31738 · 507 · 706 · 820 · 1306 · 26601 · C6426 · FH6 · 52806 · VF1 · 7006 · 7M6 · KC060 · FM09 · 101 · FC507
This part cross-references / interchanges with the following part numbers:
What does the Dayco 81281 radiator hose do?
It is a flex radiator coolant hose that carries engine coolant between the engine and radiator. It is cataloged for upper, lower, or upper pipe-to-radiator positions, depending on the vehicle.
What size is the Dayco 81281?
Both ends have a 1.75-inch inside diameter, and the hose has a 6.13-inch centerline length.
Which vehicles does this hose fit?
Listed applications include the 1946-1951 Ford Deluxe (V8-3.9L) and 1946-1949 Chrysler Royal Series (L6-4.1L). See the Buyer's Guide tab for the full list.
How many hoses does my vehicle need?
It depends on the application. Most listed vehicles use one, while some use two. Check the quantity in the Buyer's Guide tab.
What are signs a radiator hose may need replacing?
Coolant leaks at the hose, a soft, swollen or cracked hose, or ongoing coolant loss are signs a radiator hose may need replacing. Diagnose first, since overheating has other causes.
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.