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Dayco 70684 Radiator Coolant Hose - Upper
Overview of Dayco Curved Radiator Hose 70684
The Dayco Curved Radiator Hose 70684 is designed for reliable coolant flow in select BMW 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
- Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards
- Trunk height of 16 1/2 inches for precise fitment
- Compatible with BMW 528i and Ford F-100, F-150, F-250, F-350 models
Detailed Product Description
This Dayco Curved Radiator Hose 70684 is a single inside diameter hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. Both ends of the hose have an inside diameter of 1 1/2 inches, making it suitable for specific radiator connections. The hose does not include a heat shield or protective sleeve, focusing on straightforward, reliable coolant transfer. Its trunk height measures 16 1/2 inches, ensuring proper routing and fit within the engine bay.
The Curved Radiator Hose product line by Dayco is designed to provide precise fit and durability for radiator coolant systems. This line emphasizes hoses that meet SAE specifications, ensuring compatibility and performance in various vehicle applications, including the BMW 528i and multiple Ford truck models.
Applications and Common Issues Addressed
- Replacement of worn or cracked radiator coolant hoses in BMW 528i and Ford F-series trucks
- Prevention of coolant leaks caused by hose degradation
- Maintaining proper coolant flow to avoid engine overheating
- Addressing hose swelling or softening due to heat exposure
- Ensuring secure hose connections with correct diameter and length
Installation Notes and Tips
- Verify hose dimensions and fitment with your vehicle model before installation
- Ensure clamps are properly tightened to prevent leaks without damaging the hose
- Inspect surrounding components for wear or damage during replacement
- Flush the cooling system if contamination or debris is present
- Replace hoses in pairs when possible to maintain system integrity
Quality Assurance and Warranty
Dayco manufactures the Curved Radiator Hose 70684 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The use of EPDM material provides resistance to heat and coolant chemicals, contributing to the hose's durability. Warranty details should be confirmed with the original equipment manufacturer or supplier.
| Brand | Dayco |
|---|---|
| Part Number | 70684 |
| Position | Curved Radiator Hose, Upper |
| 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 | 16 1/2 |
This part fits 45 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1981 | BMW | 528i | Upper | Curved Radiator Hose | ||
| 1980 | BMW | 528i | Upper | Curved Radiator Hose | ||
| 1979 | Ford | F-100 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1979 | Ford | F-150 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1978 | Ford | F-100 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1978 | Ford | F-150 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1978 | Ford | F-250 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1978 | Ford | F-350 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1977 | Ford | F-100 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1977 | Ford | F-150 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1977 | Ford | F-250 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1977 | Ford | F-350 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1976 | Ford | F-100 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1976 | Ford | F-150 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1976 | Ford | F-350 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1975 | Ford | F-100 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1975 | Ford | F-150 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1975 | Ford | F-350 | 5.0L | V8 | Upper | w/o A.C., Std. Rad.; Curved Radiator Hose |
| 1974 | Ford | F-100 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1974 | Ford | F-100 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1974 | Ford | F-250 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1974 | Ford | F-250 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1974 | Ford | F-350 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1974 | Ford | F-350 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1973 | Ford | F-100 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1973 | Ford | F-100 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1973 | Ford | F-250 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1973 | Ford | F-250 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1973 | Ford | F-350 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1973 | Ford | F-350 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1972 | Ford | F-100 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1972 | Ford | F-100 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1972 | Ford | F-250 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1972 | Ford | F-250 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1972 | Ford | F-350 | 5.0L | V8 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose |
| 1972 | Ford | F-350 | Upper | Std. Rad., w/o A.C.; Curved Radiator Hose | ||
| 1971 | Ford | F-100 | 5.0L | V8 | Upper | Curved Radiator Hose |
| 1971 | Ford | F-100 | Upper | Curved Radiator Hose | ||
| 1971 | Ford | F-250 | 5.0L | V8 | Upper | Curved Radiator Hose |
| 1970 | Ford | F-100 | 5.0L | V8 | Upper | Curved Radiator Hose |
| 1970 | Ford | F-100 | Upper | Curved Radiator Hose | ||
| 1970 | Ford | F-250 | 5.0L | V8 | Upper | Curved Radiator Hose |
| 1969 | Ford | F-100 | 5.0L | V8 | Upper | Curved Radiator Hose |
| 1969 | Ford | F-100 | Upper | Curved Radiator Hose | ||
| 1969 | Ford | F-250 | 5.0L | V8 | Upper | 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.