OE Quality
60-Day Returns

Dayco 72998 Radiator Coolant Hose - Upper
Overview of Dayco Curved Radiator Hose 72998
The Dayco Curved Radiator Hose 72998 is designed specifically for Ram 1500 and 1500 Classic models. Constructed from durable EPDM material, this black radiator coolant hose ensures reliable performance in your vehicle's cooling system.
- Material: EPDM for heat and chemical resistance
- Color: Black
- End 1 and End 2 Inside Diameter: 1 1/2 inches
- End 1 and End 2 Outside Diameter: 1 7/8 inches
- Contains protective sleeve for added durability
- Hose Type: Single inside diameter hose
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Trunk Height: 24 1/2 inches
About the Curved Radiator Hose Product Line
The Dayco Curved Radiator Hose line focuses on providing hoses with precise bends and dimensions to fit specific vehicle cooling systems. This product line is engineered to maintain optimal coolant flow and resist degradation from heat and chemicals, making it suitable for demanding applications such as those found in Ram 1500 and 1500 Classic trucks.
Detailed Product Description
The Dayco 72998 radiator coolant hose is manufactured 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 and an outside diameter of 1 7/8 inches, ensuring a secure fit on compatible radiator and engine connections. The hose includes a protective sleeve to guard against abrasion and premature wear, although it does not contain a heat shield. This single inside diameter hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive cooling system requirements.
Applications and Problem Solving
- Replacement for worn or cracked radiator coolant hoses on Ram 1500 and 1500 Classic
- Prevents coolant leaks caused by hose degradation
- Maintains proper coolant flow to avoid engine overheating
- Resists swelling and softening from prolonged coolant exposure
- Protects against abrasion damage with integrated protective sleeve
Installation Notes and Tips
Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify that the hose diameters match the radiator and engine fittings on your Ram 1500 or 1500 Classic. Use appropriate clamps to secure the hose ends firmly, and inspect the protective sleeve for any damage during installation. Proper hose routing is essential to prevent kinks or contact with moving parts.
Quality Assurance
Dayco manufactures the 72998 radiator hose to meet SAE specifications, ensuring consistent quality and performance. The EPDM material and protective sleeve contribute to the hose's durability and longevity. While specific warranty details are not provided, Dayco products typically adhere to industry standards for reliability in automotive cooling applications.
| Brand | Dayco |
| Part Number | 72998 |
| Position | Curved Radiator Hose, Upper |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 1 1/2 |
| End 2 Inside Diameter | 1 1/2 |
| Contains Heat Shield | N |
| Contains Protective Sleeve | Y |
| End 1 Outside Diameter | 1 7/8 |
| End 2 Outside Diameter | 1 7/8 |
| Hose Type | Single i.d. hose |
| SAE Specification | Sae j20r4 class d-1, sae j1684 type ec |
| Trunk Height | 24 1/2 |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2021 | Ram | 1500 Classic | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2020 | Ram | 1500 Classic | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2019 | Ram | 1500 Classic | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2018 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2017 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2016 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2015 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2014 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2013 | Ram | 1500 | 3.6L | V6 | Upper | Curved Radiator Hose |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.