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Dayco 70770 Radiator Coolant Hose - Upper
| Brand | Dayco 70770 |
|---|---|
| Position | Upper |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 2 |
| End 2 Inside Diameter | 2 |
| Contains Heat Shield | N |
| Contains Protective Sleeve | N |
| Hose Type | Single i.d. hose |
| SAE Specification | Sae j20r4 class d-1, sae j1684 type ec |
| Trunk Height | 25 1/2 |
| Fits | — |
EPDM construction. Resists heat and coolant exposure for dependable hose performance.
Single I.D. hose. A straightforward coolant hose design for clean, efficient routing.
SAE J20R4 Class D-1. Built to meet recognized coolant hose performance standards.
Cross-references ACDelco 26034X, ACDelco 26233X and CARQUEST 20933 for the same application. See all 21.
Dayco 70770 Curved Radiator Hose Overview
The Dayco 70770 curved radiator hose is a black EPDM coolant hose built for 2-inch inside diameter connections at both ends. It is a single I.D. hose that follows the routing needed in the cooling system, making it a direct replacement choice for radiator coolant hose service on select vehicles.
For drivers searching for a radiator hose for Chevrolet, GMC, or other GM applications, this Dayco hose provides the dimensions and SAE-rated construction needed for coolant transfer in the engine bay. The Dayco 70770 is also cross-referenced to several OE and aftermarket numbers for the same application.
Key Features
- Brand: Dayco Curved Radiator Hose
- Part number: 70770
- EPDM construction for coolant-system use
- Black finish for a clean OE-style appearance
- 2-inch inside diameter at both ends
- Single I.D. hose design
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- No heat shield and no protective sleeve
Product Details
Dayco Curved Radiator Hose 70770 is built as a molded-style coolant hose for vehicles that require a 2-inch inlet and outlet connection. EPDM rubber is commonly used in radiator hose construction because it handles engine-cooling temperatures and coolant exposure well. The curved profile helps the hose follow the factory routing path in the cooling system, which is important for proper fit and consistent coolant flow.
This hose is a practical replacement for cooling system service on applications such as Chevrolet and GMC trucks and SUVs, as well as other GM-related fitments where the same hose dimensions are specified. If you are replacing a worn radiator hose on a Chevrolet or GMC cooling system, the Dayco 70770 offers a specification-driven match rather than a universal cut-to-fit solution.
This part cross-references ACDelco 26034X and Gates 20757 for the same application.
What It Helps Address
- Coolant leaks from a cracked or aged radiator hose
- Softening, swelling, or collapse of an original hose
- Improper hose routing caused by a misshaped replacement
- Cooling system service on vehicles needing a 2-inch curved hose
- Replacement of a hose that no longer seals correctly at the radiator or engine connection
Installation Notes and Tips
Verify the hose routing, end diameters, and overall shape against the original part before installation. Clean the hose necks and inspect clamps, radiator outlets, and engine fittings for corrosion or damage before fitting the new hose. After installation, refill the cooling system with the correct coolant and check for leaks once the engine reaches operating temperature.
For fitment-based searches, this hose is the type of part used when looking for a Dayco radiator coolant hose for Chevrolet and GMC cooling system repair, or a replacement curved radiator hose for GM applications with 2-inch ends.
Quality Assurance
Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and performance requirements for radiator hose service.
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