OE Quality
60-Day Returns

Gates 21011 Radiator Coolant Hose - Lower
Overview of Gates Molded Coolant Hose 21011
The Gates Molded Coolant Hose 21011 is engineered for reliable radiator coolant transfer in various vehicle applications. Constructed from durable EPDM material, this molded radiator coolant hose offers precise fitment and long-lasting performance for compatible makes and models.
- Material: High-quality EPDM for heat and chemical resistance
- End 1 Inside Diameter: 2.25 inches (57 mm)
- End 2 Inside Diameter: 2.7 inches (69 mm)
- Centerline Length: 19 inches (483 mm)
- Contains internal spring for shape retention and pressure stability
- Molded design ensures exact fit and reduces leak points
- No quick connect fittings or branches, designed for straightforward coolant routing
Detailed Product Description
The Gates Molded Coolant Hose 21011 is part of the Molded Coolant Hose product line, which focuses on precision-engineered hoses designed to meet or exceed OEM specifications. This hose is molded from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, making it suitable for radiator applications where durability is critical. The molded construction provides a consistent shape and fit, minimizing the risk of leaks and improving coolant flow efficiency.
With an internal spring embedded within the hose, the 21011 maintains its shape under pressure and prevents collapse during engine operation. The hose features two different inside diameters—2.25 inches (57 mm) on one end and 2.7 inches (69 mm) on the other—allowing it to connect components with varying sizes. Its 19-inch (483 mm) centerline length is designed to fit specific radiator coolant pathways, ensuring compatibility with certain vehicle makes and models.
Common Applications and Problem Solving
- Replacement of worn or cracked radiator coolant hoses
- Resolving coolant leaks caused by hose degradation or swelling
- Preventing hose collapse under vacuum or pressure conditions
- Maintaining proper coolant flow to avoid engine overheating
- Ensuring secure connections between radiator and engine coolant ports
Installation Notes and Tips
When installing the Gates Molded Coolant Hose 21011, ensure the hose is routed without sharp bends or kinks to maintain coolant flow. Verify that the inside diameters match the radiator and engine fittings to prevent leaks. The molded design simplifies installation by providing a precise fit, but it is important to inspect clamps and connections for tightness after installation. Always replace hoses when the engine is cool to avoid burns or injury.
Quality Assurance and Warranty
Gates is a recognized manufacturer of automotive hoses and belts, adhering to strict quality control standards. The Molded Coolant Hose 21011 is manufactured to meet OEM specifications for durability and performance. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.
| Brand | Gates |
| Part Number | 21011 |
| Material | Epdm |
| End 1 Inside Diameter | 2.25 |
| End 1 Inside Diameter | 57 |
| End 2 Inside Diameter | 2.7 |
| End 2 Inside Diameter | 69 |
| Contains Spring | Yes |
| Centerline Length | 19 |
| Centerline Length | 483 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Modular Hose | No |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* 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.