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Gates 51821 Radiator Coolant Hose - Upper
Reliable Radiator Coolant Hose for Subaru Vehicles
The Gates Molded Coolant Hose 51821 is designed specifically for Subaru Crosstrek, Impreza, and XV models. Constructed from durable EPDM material, this radiator coolant hose ensures consistent performance and longevity in your vehicle's cooling system.
- Made from high-quality EPDM rubber for heat and chemical resistance
- Exact fit for Subaru Crosstrek, Impreza, and XV models
- Centerline length of 12.2 inches (310 mm) for precise installation
- Uniform inside diameter of 1.46 inches (37 mm) on both ends
- Does not contain a spring, ensuring flexibility and durability
About the Gates Molded Coolant Hose Product Line
The Molded Coolant Hose line by Gates offers pre-formed hoses engineered to match the original equipment specifications. These hoses provide a reliable seal and fit, reducing the risk of leaks and cooling system failures. The 51821 part number is part of this line, designed to meet the exact requirements of Subaru vehicles for optimal coolant flow and system integrity.
Product Details and Specifications
This radiator coolant hose features a consistent inside diameter of 1.46 inches (37 mm) on both ends, ensuring compatibility with the corresponding radiator and engine fittings. The 12.2-inch (310 mm) centerline length allows for a precise fit within the cooling system layout of Subaru Crosstrek, Impreza, and XV models. Made from EPDM, the hose resists heat, ozone, and coolant chemicals, contributing to a longer service life. The absence of an internal spring enhances flexibility without compromising structural integrity.
Common Applications and Problem Solving
- Replacement of worn or cracked radiator coolant hoses in Subaru Crosstrek, Impreza, and XV
- Prevention of coolant leaks that can lead to engine overheating
- Restoration of proper coolant flow within the vehicle's cooling system
- Addressing hose swelling or softening caused by heat and chemical exposure
- Ensuring a secure connection between radiator and engine components
Installation Notes and Tips
Before installation, ensure the engine is cool to avoid injury from hot coolant. Inspect hose connections and clamps for wear and replace if necessary. The Gates Molded Coolant Hose 51821 is designed for direct replacement, so no modifications are required. Properly secure clamps to prevent leaks and verify hose routing matches the original configuration to avoid kinks or interference.
Quality Assurance and Warranty
Gates manufactures the Molded Coolant Hose 51821 to meet stringent quality standards, ensuring durability and reliable performance. The EPDM material is selected for its resistance to heat and coolant chemicals. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality guarantees. Refer to official Gates documentation for warranty terms.
| Brand | Gates |
| Part Number | 51821 |
| Position | Molded Coolant Hose, Upper |
| Material | Epdm |
| End 1 Inside Diameter | 1.46 |
| End 1 Inside Diameter | 37 |
| End 2 Inside Diameter | 1.46 |
| End 2 Inside Diameter | 37 |
| Contains Spring | No |
| Centerline Length | 12.2 |
| Centerline Length | 310 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| 9940 | No |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2025 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Molded Coolant Hose |
| 2025 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Molded Coolant Hose |
| 2024 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Molded Coolant Hose |
| 2024 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2023 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2023 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2022 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2022 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2021 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2021 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2020 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2020 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2020 | Subaru | XV | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2019 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2019 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2019 | Subaru | XV | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2018 | Subaru | Crosstrek | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2018 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2018 | Subaru | XV | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant Hose |
| 2017 | Subaru | Impreza | 2.0L | H4 | GAS | Upper | Available Until Stock Depleted; Molded Coolant 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.