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Dayco 71004 Radiator Coolant Hose - Lower or Lower - Radiator To Pipe
| Brand | Dayco 71004 |
|---|---|
| Position | Lower and Lower - Radiator To Pipe |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 3 |
| End 2 Inside Diameter | 3 |
| 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 | 11 1/2 |
| Fits | — |
EPDM construction. Resists heat and coolant exposure for dependable hose performance.
Single I.D. hose. Provides a straightforward coolant hose design for clean routing.
SAE J20R4 Class D-1. Built to meet recognized coolant hose performance standards.
Cross-references ACDelco 20160S, ACDelco 20170S and CARQUEST 21420 for the same application. See all 21.
Dayco Curved Radiator Hose 71004
Dayco 71004 is a curved radiator coolant hose built for cooling-system service where a formed EPDM hose is required. With 3-inch inside diameters at both ends and a black finish, it is shaped for direct coolant routing in applications that call for a single I.D. hose.
This Dayco curved radiator hose is part of the Dayco Curved Radiator Hose line, a product range focused on formed coolant hoses for specific routing needs. If you are replacing a worn radiator hose on a Chevrolet, GMC, or General Motors application, 71004 provides the dimensions and construction needed for a proper coolant connection.
Key Features
- EPDM construction for coolant-system use
- Curved radiator hose design for formed routing
- 3-inch inside diameter at both ends
- Single I.D. hose configuration
- Black finish for a clean OE-style appearance
- Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Dayco part number 71004 for easy identification
Detailed Description
Dayco 71004 is a radiator coolant hose engineered with EPDM material to handle coolant flow in the engine cooling system. The curved shape helps match the routing used in specific vehicle applications, while the 3-inch end diameters support a consistent connection size on both ends. This hose is a practical choice for service work where the original hose has aged, softened, cracked, or lost its sealing ability. Cross-reference part numbers for the same application include Gates 21122 and NAPA 8117.
For buyers searching for a Dayco 71004 radiator hose, curved coolant hose, or 3-inch EPDM radiator hose for Chevrolet, GMC, or General Motors vehicles, this part offers a straightforward replacement option built around the listed dimensions and SAE standards.
Common Problems This Hose Can Address
- Coolant leaks from a cracked or deteriorated radiator hose
- Softening, swelling, or collapse of an aging coolant hose
- Poor sealing at the hose connection points
- Incorrect hose shape after a previous replacement
- Cooling-system service on vehicles requiring a 3-inch curved hose
Installation Notes and Tips
Confirm hose routing, end diameters, and overall shape before installation. Inspect the mating necks, clamps, and nearby cooling-system components for wear or corrosion, and replace any damaged parts before filling the system. After installation, refill and bleed the cooling system according to the vehicle service procedure and check carefully for leaks at operating temperature.
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 coolant service. Verify application details against the vehicle’s original hose dimensions and routing before ordering. Compatible with select Chevrolet, GMC, and General Motors applications where the listed 3-inch curved hose configuration is specified.
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