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Dayco 70725 Radiator Coolant Hose - Lower or Upper
Overview of Dayco Curved Radiator Hose 70725
The Dayco Curved Radiator Hose 70725 is designed to provide reliable coolant flow for select Buick and Ford vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.
- Constructed from high-quality EPDM for heat and chemical resistance
- Black single inside diameter hose with 1 1/2 inch ends
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Trunk height of 18 1/2 inches for precise fitment
- Compatible with Buick Century, LeSabre, Regal, Skylark and Ford E-250 Econoline, E-250 Econoline Club Wagon, E-350 Econoline
Detailed Product Description
The Dayco Curved Radiator Hose line is engineered to meet stringent automotive cooling system requirements. This particular hose, part number 70725, is made from EPDM (ethylene propylene diene monomer) rubber, which offers excellent resistance to heat, ozone, and coolant chemicals. The hose features a single inside diameter of 1 1/2 inches on both ends, ensuring a secure and leak-free connection within the cooling system. With a trunk height of 18 1/2 inches, it is designed to fit specific radiator hose routing paths in compatible Buick and Ford models. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications without heat shields or protective sleeves.
Compatible Vehicles and Applications
- Buick Century, LeSabre, Regal, Skylark models requiring a 1 1/2 inch curved radiator hose
- Ford E-250 Econoline, E-250 Econoline Club Wagon, and E-350 Econoline models with matching hose specifications
- Replacement for worn or damaged radiator coolant hoses in listed vehicles
- Helps maintain proper engine temperature by ensuring coolant flow
- Prevents coolant leaks and potential engine overheating issues
Installation Notes and Tips
- Verify hose dimensions and fitment with your vehicle’s specifications before installation
- Ensure all clamps and connections are secure to prevent leaks
- Inspect surrounding components for wear or damage during replacement
- Drain coolant system safely before removing the old hose
- Use appropriate tools to avoid damaging hose ends or radiator fittings
Quality Assurance and Warranty
Dayco’s Curved Radiator Hose 70725 is manufactured to meet SAE standards, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are designed for reliable service life in automotive cooling systems.
| Brand | Dayco |
| Part Number | 70725 |
| Position | Curved Radiator Hose, Lower |
| Color | Black |
| End 1 Inside Diameter | 1 1/2 |
| End 2 Inside Diameter | 1 1/2 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 18 1/2 |
This part fits 27 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1977 | Buick | Century | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1977 | Buick | Regal | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1976 | Buick | Century | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1976 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1976 | Buick | Regal | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1975 | Buick | Century | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1975 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1975 | Buick | Regal | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1975 | Ford | E-250 Econoline | 7.5L | V8 | Upper | Curved Radiator Hose |
| 1975 | Ford | E-250 Econoline Club Wagon | 7.5L | V8 | Upper | Curved Radiator Hose |
| 1975 | Ford | E-350 Econoline | 7.5L | V8 | Upper | Curved Radiator Hose |
| 1974 | Buick | Century | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1974 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1974 | Buick | Regal | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1973 | Buick | Century | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1973 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1973 | Buick | Regal | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1972 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1972 | Buick | Skylark | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1971 | Buick | LeSabre | 5.7L | V8 | Lower | Early; Curved Radiator Hose |
| 1971 | Buick | LeSabre | 5.7L | V8 | Lower | Late; Curved Radiator Hose |
| 1971 | Buick | Skylark | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1970 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1970 | Buick | Skylark | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1969 | Buick | LeSabre | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1969 | Buick | Skylark | 5.7L | V8 | Lower | Curved Radiator Hose |
| 1968 | Buick | Skylark | 5.7L | 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.