OE Quality
60-Day Returns

Dayco 72005 Radiator Coolant Hose - Lower
Overview of Dayco Curved Radiator Hose 72005
The Dayco Curved Radiator Hose 72005 is designed for reliable coolant flow in select Lexus, Nissan, and Toyota vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.
Key Features of Dayco Radiator Coolant Hose 72005
- Constructed from EPDM for heat and chemical resistance
- Black color with a curved design for precise fitment
- Inside diameter of 1 5/16 inches on both ends for uniform coolant flow
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Single inside diameter hose type without heat shield or protective sleeve
- Trunk height measures 16 3/4 inches for proper routing
About the Curved Radiator Hose Product Line
The Dayco Curved Radiator Hose line focuses on delivering hoses shaped to fit specific engine layouts, reducing installation complexity and improving coolant system efficiency. This product line includes hoses engineered to meet strict SAE standards, ensuring compatibility and durability for vehicles like the Lexus RX300, Nissan 350Z, and Toyota Highlander.
Detailed Product Description
The Dayco 72005 radiator coolant hose is manufactured from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. Both ends of the hose have an inside diameter of 1 5/16 inches, providing a consistent seal and flow rate. The hose’s curved design allows it to fit precisely within the engine bay of compatible Lexus, Nissan, and Toyota models, including the RX300, 350Z, and Highlander. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for coolant system applications without additional heat shielding or protective sleeves.
Common Applications and Issues Addressed
- Replacement of worn or cracked radiator coolant hoses in Lexus RX300, Nissan 350Z, and Toyota Highlander
- Resolving coolant leaks caused by hose degradation or swelling
- Preventing overheating due to compromised coolant flow
- Maintaining proper coolant system pressure and temperature regulation
- Ensuring secure hose connections with consistent inside diameter ends
Installation Notes and Tips
- Verify hose dimensions and fitment with vehicle specifications 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
- Allow the engine to cool before removing the old hose to avoid burns
Quality Assurance and Warranty
Dayco manufactures the 72005 radiator coolant hose to meet SAE specifications, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry standards for durability and reliability in automotive cooling systems.
| Brand | Dayco |
|---|---|
| Part Number | 72005 |
| Position | Curved Radiator Hose, Lower |
| Color | Black |
| End 1 Inside Diameter | 1 5/16 |
| End 2 Inside Diameter | 1 5/16 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 16 3/4 |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Nissan | 350Z | Lower | Curved Radiator Hose | |||
| 2008 | Nissan | 350Z | Lower | Curved Radiator Hose | |||
| 2007 | Nissan | 350Z | Lower | Curved Radiator Hose | |||
| 2007 | Toyota | Highlander | 3.3L | V6 | GAS | Lower | Curved Radiator Hose |
| 2006 | Toyota | Highlander | 3.3L | V6 | GAS | Lower | Curved Radiator Hose |
| 2005 | Toyota | Highlander | 3.3L | V6 | Lower | Curved Radiator Hose | |
| 2004 | Toyota | Highlander | 3.3L | V6 | Lower | Curved Radiator Hose | |
| 2003 | Lexus | RX300 | Lower | Curved Radiator Hose | |||
| 2003 | Toyota | Highlander | 3.0L | V6 | Lower | Curved Radiator Hose | |
| 2002 | Lexus | RX300 | Lower | Curved Radiator Hose | |||
| 2002 | Toyota | Highlander | 3.0L | V6 | Lower | Curved Radiator Hose | |
| 2001 | Lexus | RX300 | Lower | Curved Radiator Hose | |||
| 2001 | Toyota | Highlander | 3.0L | V6 | Lower | Curved Radiator Hose | |
| 2000 | Lexus | RX300 | Lower | Curved Radiator Hose | |||
| 1999 | Lexus | RX300 | 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.