Keep coolant moving between the radiator and engine with the Dayco coolant hose 70770, a curved upper radiator hose built to replace a cracked, swollen, or leaking original on a range of Chevrolet and GMC medium-duty trucks. It fits many vehicles and installs in the upper radiator position on applications such as the 1997-1998 Chevrolet C6500 Kodiak 6.0L / 7.0L, 1997-1998 Chevrolet C7500 Kodiak 6.0L / 7.0L and 1997-1998 GMC C6500 Topkick 6.0L / 7.0L. See the "Vehicles it fits" section for the full list of covered vehicles and engines.
As a Dayco curved radiator hose, it comes in a curved shape rather than a straight length.
- Material: EPDM in black.
- Dimensions: single-I.D. hose with a 2-inch inside diameter at each end and a centerline length of about 25.5 inches.
- Specifications: meets SAE J20R4 Class D-1 and SAE J1684 Type EC.
- Configuration: supplied without a heat shield and without a protective sleeve.
Country of origin: Thailand. A hardened, bulging, or seeping hose is a common sign it may need replacing.
Interchange: 26034X · 26233X · MH441 · 20933 · 22031 · 60753 · 20757 · KM542 · 7658 · 8715 · MR894
This part cross-references / interchanges with the following part numbers:
26034X, 26233X, MH441, 20933, 22031, 60753, 20757, KM542, 7658, 8715, MR894, 15654518, 15684449, 15684450, 15684452, 3898543, 3918376, 3926089, 688130, BH1538
Frequently Asked Questions
What is the Dayco 70770 radiator hose made of?
It is made from EPDM in black and meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.
Is this the upper or lower radiator hose?
The catalog lists this as the upper radiator hose position for the covered applications.
What size is the Dayco curved radiator hose 70770?
It is a single-I.D. hose with a 2-inch inside diameter at each end and a centerline length of about 25.5 inches.
Does the 70770 include a heat shield or protective sleeve?
No. This hose is supplied without a heat shield and without a protective sleeve.
Which vehicles does the Dayco 70770 fit?
It fits many vehicles, among them the 1997-1998 Chevrolet C6500 Kodiak 6.0L / 7.0L, 1997-1998 Chevrolet C7500 Kodiak 6.0L / 7.0L and 1997-1998 GMC C6500 Topkick 6.0L / 7.0L. See the "Vehicles it fits" section for the full list.
