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Gates 51645 Radiator Coolant Hose - Upper
Reliable Radiator Coolant Hose for Volkswagen Vehicles
The Gates Molded Coolant Hose 51645 is engineered to provide dependable cooling system performance for Volkswagen Beetle, Jetta, and Passat models. Designed with durable materials and precise dimensions, this radiator coolant hose ensures proper fit and function in your vehicle's cooling system.
- Constructed from EPDM, plastic, and steel for durability and heat resistance
- Molded design with modular components including a branch and two female quick connectors
- Centerline length of 25.5 inches (648 mm) for accurate fitment
- End 1 inside diameter: 1.3 inches (33 mm); End 2 inside diameter: 1.38 inches (35 mm)
- Includes two quick connect fittings for secure attachment
- Compatible with Volkswagen Beetle, Jetta, and Passat models
About the Gates Molded Coolant Hose Product Line
The Molded Coolant Hose line by Gates focuses on precision-engineered hoses designed to meet specific vehicle cooling system requirements. This product line features molded hoses with integrated quick connectors and modular components, providing a reliable and efficient solution for coolant transfer. The 51645 part exemplifies this approach with its molded construction and built-in fittings, ensuring a secure and leak-resistant connection.
Product Details and Specifications
The Gates 51645 radiator coolant hose is made from a combination of EPDM rubber, plastic, and steel, materials chosen for their resistance to heat, pressure, and coolant chemicals. The hose features a molded design with a single branch and two female quick connectors, facilitating straightforward installation and maintenance. With a centerline length of 25.5 inches (648 mm), it fits precisely within the cooling system layout of compatible Volkswagen models. The hose ends have inside diameters of 1.3 inches (33 mm) and 1.38 inches (35 mm), ensuring proper connection to radiator and engine fittings.
Common Applications and Problem Solving
- Replacement of worn or cracked radiator coolant hoses in Volkswagen Beetle, Jetta, and Passat
- Resolving coolant leaks caused by deteriorated or damaged hoses
- Maintaining optimal engine temperature by ensuring proper coolant flow
- Preventing overheating issues related to faulty coolant hose connections
- Upgrading to a molded hose with quick connectors for easier serviceability
Installation Notes and Tips
When installing the Gates Molded Coolant Hose 51645, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose orientation and confirm the quick connectors engage securely with mating components. Inspect all connections for leaks after installation and refill the cooling system with the appropriate coolant mixture. Proper installation will help maintain system integrity and prevent premature hose failure.
Quality Assurance and Warranty
Gates manufactures the Molded Coolant Hose 51645 to meet stringent quality standards, using materials that withstand automotive cooling system demands. While specific warranty details are not provided, Gates products typically adhere to industry standards for durability and performance, offering reliable service life when installed and maintained correctly.
| Brand | Gates |
| Part Number | 51645 |
| Position | Molded Coolant Hose, Upper |
| Material | Epdm, plastic, steel |
| End 1 Inside Diameter | 1.3 |
| End 1 Inside Diameter | 33 |
| End 2 Inside Diameter | 1.38 |
| End 2 Inside Diameter | 35 |
| Contains Spring | No |
| Centerline Length | 25.5 |
| Centerline Length | 648 |
| Centerline Length | 8 |
| End 3 Inside Diameter | .3 |
| Branch Quantity | 1 |
| 9839 | Yes |
| 9845 | 2 |
| Modular Components | Branch, 2 female quick connectors |
| Modular Hose | Yes |
| Molded | Yes |
| Number of Quick Connect Fittings | 2 |
This part fits 23 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Volkswagen | Jetta | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2018 | Volkswagen | Jetta | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Volkswagen | Beetle | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Volkswagen | Jetta | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Volkswagen | Jetta | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2017 | Volkswagen | Jetta | 2.5L | L5 | GAS | Upper | Molded Coolant Hose |
| 2017 | Volkswagen | Passat | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Volkswagen | Beetle | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Volkswagen | Beetle | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Volkswagen | Jetta | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Volkswagen | Jetta | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2016 | Volkswagen | Passat | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2015 | Volkswagen | Beetle | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2015 | Volkswagen | Beetle | 2.0L | L4 | GAS | Upper | W/O Aux. Rad.; Molded Coolant Hose |
| 2015 | Volkswagen | Jetta | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2015 | Volkswagen | Jetta | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2015 | Volkswagen | Passat | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2014 | Volkswagen | Beetle | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2014 | Volkswagen | Beetle | 2.0L | L4 | GAS | Upper | W/O Aux. Rad.; Molded Coolant Hose |
| 2014 | Volkswagen | Jetta | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2014 | Volkswagen | Jetta | 2.0L | L4 | GAS | Upper | Molded Coolant Hose |
| 2014 | Volkswagen | Passat | 1.8L | L4 | GAS | Upper | Molded Coolant Hose |
| 2013 | Volkswagen | Beetle | 2.0L | L4 | GAS | Upper | W/O Aux. Rad.; 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.