/live/media/DY/DY_71604_Fro.jpg)
Dayco 71604 Radiator Coolant Hose - Lower
| Brand | Dayco 71604 |
|---|---|
| Position | Lower |
| Color | Black |
| End 1 Inside Diameter | 1 |
| End 2 Inside Diameter | 1 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 22 |
| Product line | Curved Radiator Hose |
| Fits | Acura and Honda · 30 vehicles |
Curved hose design. Helps route coolant smoothly with a cleaner, more flexible fit.
EPDM construction. Built from durable rubber for dependable coolant service.
SAE-rated hose. Meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards.
Cross-references ACDelco 20308S, ACDelco 26137X and CARQUEST 21605 for the same application. See all 15.
Dayco Curved Radiator Hose 71604
Dayco 71604 is a curved radiator coolant hose built for lower cooling-system routing on select Honda and Acura applications. Made from EPDM rubber with a black finish, it uses a single I.D. hose design with 1-inch inside diameter ends for a direct replacement-style fit.
Key Features
- EPDM construction for coolant-system service
- Curved radiator hose profile for lower hose routing
- 1-inch inside diameter at both ends
- Black finish for OE-style appearance
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Dayco part number 71604 for easy identification
Product Details
This Dayco curved radiator hose is part of the Curved Radiator Hose line, a cooling-hose range focused on replacement fit and material compatibility for passenger vehicles. The EPDM rubber construction is selected for coolant exposure, while the single I.D. hose layout supports lower radiator hose applications where a formed bend is required. Dayco 71604 is a direct-fit style option for 1992-2000 Honda Civic lower radiator hose service, 1993-1997 Honda Civic del Sol lower radiator hose service, and 1997-2000 Acura EL lower radiator hose service. This part cross-references Honda 19502-P08-000 and 19502-P2A-000 for the same application.
Common Problems This Hose Addresses
- Cracked or hardened lower radiator hose material
- Coolant leaks at a worn curved hose section
- Softening or swelling from age and heat cycling
- Restricted coolant flow caused by hose deterioration
- Replacement needs for Honda Civic, Honda Civic del Sol, and Acura EL cooling systems
Installation Notes and Tips
- Verify the hose routing and end diameters before installation.
- Inspect hose clamps, necks, and adjoining cooling components for wear or corrosion.
- Drain coolant as needed before removing the existing lower hose.
- Confirm the hose is seated fully on both connections before refilling the system.
- After installation, check for leaks and recheck coolant level after the engine reaches operating temperature.
Quality Assurance
Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service. The part number 71604 is identified for straightforward ordering and fitment verification.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2000 | Acura | EL | — | — | — | — | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | — | 1.6L | L4 | CNG | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | LX | 1.6L | L4 | GAS | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | EX | 1.6L | L4 | GAS | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | CX | 1.6L | L4 | GAS | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | DX | 1.6L | L4 | GAS | Lower | Curved Radiator Hose |
| 2000 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1999 | Acura | EL | — | — | — | — | Lower | Curved Radiator Hose |
| 1999 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1998 | Acura | EL | — | — | — | — | Lower | Curved Radiator Hose |
| 1998 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1997 | Acura | EL | — | — | — | — | Lower | Curved Radiator Hose |
| 1997 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1997 | Honda | Civic del Sol | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1996 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1996 | Honda | Civic del Sol | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1995 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1995 | Honda | Civic | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1995 | Honda | Civic del Sol | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1995 | Honda | Civic del Sol | VTEC | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1994 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1994 | Honda | Civic | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1994 | Honda | Civic del Sol | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1994 | Honda | Civic del Sol | VTEC | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1993 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1993 | Honda | Civic | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1993 | Honda | Civic del Sol | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1993 | Honda | Civic del Sol | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| 1992 | Honda | Civic | — | 1.6L | L4 | — | Lower | Curved Radiator Hose |
| 1992 | Honda | Civic | — | 1.5L | L4 | — | Lower | Curved Radiator Hose |
| No rows match your filter. | ||||||||