Keep coolant moving between the engine and radiator with the Dayco Radiator Coolant Hose 70548, a direct-fit UPPER radiator hose for a wide range of classic GM cars. It fits applications such as the 1969 Buick Electra, 1969-1970 Buick LeSabre, 1968-1970 Buick Skylark, 1968-1970 Oldsmobile Cutlass, 1973-1977 Oldsmobile Cutlass Supreme, 1974-1976 Oldsmobile Delta 88, and 1976 Pontiac LeMans — see the "Vehicles it fits" section for the full list.
- Upper radiator hose: routes hot coolant from the engine to the top of the radiator as part of the cooling circuit.
- Direct-fit replacement: a direct-fit replacement for the listed Buick, Oldsmobile, and Pontiac applications.
- Renews an aging hose: a good choice when the original hose shows cracking, swelling, softening, or coolant seepage.
A radiator hose lives in a hot, pressurized, chemically demanding environment, so hardening, bulging, or leaks are common signs it may be time to replace it. If a failing upper hose is the cause of your coolant loss, this Dayco hose replaces it.
Interchange: 26005X · RH78 · MC24 · C0577 · MH220 · 20577 · CH35 · 60674 · 003 · 60963 · 5028 · KM12 · 7349 · BP822 · H307 · H309 · H397 · H399 · MR163 · MR815 · CH344 · MC126 · MC19
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
26005X, RH78, MC24, C0577, MH220, 20577, CH35, 60674, 003, 60963, 5028, KM12, 7349, BP822, H307, H309, H397, H399, MR163, MR815, CH344, MC126, MC19, 1239644, 1382155, 1382423, 1385523, 1386849, 1387768, 394884, 396560, 398671, 410668, U1382155, U1385523, U1387768, BH1077, BH1673, 77-8402-8, 77-8442-4
Frequently Asked Questions
What does this hose do?
As an upper radiator hose, it carries hot coolant from the engine to the top of the radiator, forming part of the cooling system's circulation path.
Is this an upper or lower hose?
The catalog lists it as the UPPER radiator coolant hose for the applications shown in the "Vehicles it fits" section.
Which vehicles does the Dayco 70548 fit?
It fits many 1967-1977 Buick, Oldsmobile, and Pontiac models, including the Skylark, LeSabre, Cutlass, Delta 88, and LeMans. Check the "Vehicles it fits" section for the complete list.
How do I know my hose needs replacing?
Cracking, swelling, hardening, soft or spongy spots, or coolant seepage are common signs a radiator hose may need replacing. Diagnose the source of any coolant loss before replacing.
What numbers does this hose interchange with?
It cross-references numbers including 26005X, RH78, MC24, C0577, MH220, 20577, CH35, 60674, and more. Its own manufacturer part number is 70548.
