OE Quality
60-Day Returns

Dayco 71902 Radiator Coolant Hose - Lower
Overview of Dayco Curved Radiator Hose 71902
The Dayco Curved Radiator Hose 71902 is designed specifically for Ford F-150, F-150 Heritage, and F-250 models. Constructed from durable EPDM material, this branched radiator coolant hose ensures reliable performance in your vehicle's cooling system.
- Made from high-quality EPDM material for heat and chemical resistance
- Branched hose design with three different inside diameters for precise fit
- Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Black color with 15 1/2 inch trunk height for proper routing
- Compatible with Ford F-150, F-150 Heritage, and F-250 models
Detailed Product Description
The Dayco Curved Radiator Hose 71902 is engineered to meet the demanding requirements of Ford trucks, including the F-150, F-150 Heritage, and F-250. This branched radiator coolant hose features three connection points with inside diameters of 1 3/4 inches on both ends and 31/32 inch on the branch, allowing for precise integration into the vehicle's cooling system. The hose's outside diameters are 2 1/8 inches on both main ends, ensuring a secure fit with radiator and engine components.
Manufactured from EPDM (ethylene propylene diene monomer) rubber, this hose offers excellent resistance to heat, ozone, and coolant chemicals, which helps maintain durability and prevents premature failure. The hose does not include a heat shield or protective sleeve, so proper installation and routing are essential to avoid exposure to excessive heat sources.
About the Curved Radiator Hose Product Line
The Dayco Curved Radiator Hose line focuses on providing branched and curved hose solutions tailored for specific vehicle applications. This product line emphasizes precise fitment and material quality to support efficient coolant flow and system reliability. The 71902 part is a branched hose variant designed to accommodate multiple coolant pathways within Ford truck cooling systems.
Common Applications and Problem Solving
- Replacement of worn or cracked radiator coolant hoses in Ford F-150, F-150 Heritage, and F-250
- Resolving coolant leaks caused by hose degradation or improper fit
- Preventing overheating issues due to compromised coolant flow
- Addressing hose swelling or softening from chemical exposure
- Maintaining proper coolant circulation in branched hose configurations
Installation Notes and Tips
- Ensure compatibility with Ford F-150, F-150 Heritage, or F-250 before installation
- Inspect hose routing to avoid contact with sharp edges or high-heat components
- Use appropriate clamps to secure all hose ends firmly
- Check for leaks after installation and during initial engine operation
- Replace any damaged clamps or fittings to maintain system integrity
Quality Assurance and Warranty
Dayco manufactures the Curved Radiator Hose 71902 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry cooling hose specifications. The EPDM material and construction provide durability under typical operating conditions. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier.
| Brand | Dayco |
|---|---|
| Part Number | 71902 |
| Position | Curved Radiator Hose, Lower |
| Color | Black |
| End 1 Inside Diameter | 1 3/4 |
| End 1 Outside Diameter | 2 1/8 |
| End 2 Inside Diameter | 1 3/4 |
| End 2 Outside Diameter | 2 1/8 |
| End 3 Inside Diameter | 31/32 |
| Hose Type | Branched Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 15 1/2 |
This part fits 30 vehicles. Search below:
| Year | Make | Model | Drive Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2004 | Ford | F-150 Heritage | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 2004 | Ford | F-150 Heritage | 4WD | 5.4L | V8 | CNG | Lower | Curved Radiator Hose |
| 2004 | Ford | F-150 Heritage | 4WD | 5.4L | V8 | BI-FUEL | Lower | Curved Radiator Hose |
| 2003 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 2003 | Ford | F-150 | 5.4L | V8 | CNG | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2003 | Ford | F-150 | 5.4L | V8 | BI-FUEL | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2003 | Ford | F-150 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2002 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 2002 | Ford | F-150 | 5.4L | V8 | CNG | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2002 | Ford | F-150 | 5.4L | V8 | BI-FUEL | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2002 | Ford | F-150 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2001 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 2001 | Ford | F-150 | 5.4L | V8 | CNG | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2001 | Ford | F-150 | 5.4L | V8 | BI-FUEL | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2001 | Ford | F-150 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2000 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 2000 | Ford | F-150 | 5.4L | V8 | CNG | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2000 | Ford | F-150 | 5.4L | V8 | BI-FUEL | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 2000 | Ford | F-150 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 1999 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 1999 | Ford | F-150 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 1999 | Ford | F-150 | 4WD | 5.4L | V8 | BI-FUEL | Lower | Curved Radiator Hose |
| 1999 | Ford | F-250 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 1999 | Ford | F-250 | 5.4L | V8 | CNG | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 1999 | Ford | F-250 | 5.4L | V8 | GAS | Lower | w/o Oil Cooler; Curved Radiator Hose | |
| 1999 | Ford | F-250 | 4WD | 5.4L | V8 | BI-FUEL | Lower | Curved Radiator Hose |
| 1998 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 1998 | Ford | F-250 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 1997 | Ford | F-150 | 4.6L | V8 | Lower | Curved Radiator Hose | ||
| 1997 | Ford | F-250 | 4.6L | V8 | Lower | Curved Radiator Hose |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.