HomeBelts and Cooling > Hoses and PipesGates 51703 Radiator Coolant Hose - Upper
Part #: 51703

Gates 51703 Radiator Coolant Hose - Upper

Molded Coolant Hose, Upper
⚙️ 4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Coolant Hose, Upper
🚗Fitment: Land Rover, Range Rover
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Gates Molded Coolant Hose 51703

The Gates Molded Coolant Hose 51703 is engineered for reliable cooling system performance in Land Rover Range Rover vehicles. Designed with durable EPDM, plastic, and steel materials, this radiator coolant hose ensures efficient coolant flow and system integrity.

  • Constructed from EPDM, plastic, and steel for durability and heat resistance
  • Molded design with three branches and two female quick connectors for precise fitment
  • Centerline length of 381 mm (15 inches) for accurate installation
  • Inside diameters of 38 mm (1.5 inches) and 15 mm (0.6 inches) at various ends
  • Compatible with Land Rover Range Rover cooling systems requiring part number 51703

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on pre-formed hoses designed to match specific vehicle cooling system layouts. This product line offers modular components with multiple branches and quick connect fittings, simplifying installation and ensuring a secure, leak-free connection. The 51703 hose exemplifies this approach with its three-branch modular design and integrated quick connectors, tailored for Land Rover Range Rover applications.

Detailed Product Description

The Gates Molded Coolant Hose 51703 features a molded construction combining EPDM rubber, plastic, and steel reinforcements to withstand high temperatures and pressure within the radiator cooling system. It includes three branches and two female quick connectors, facilitating a modular setup that fits precisely in the Land Rover Range Rover cooling circuit. The hose’s centerline length measures 381 mm (15 inches), with consistent inside diameters of 38 mm (1.5 inches) on multiple ends and smaller 15 mm (0.6 inches) diameters on additional outlets. This design supports efficient coolant flow and system reliability without the need for springs or additional fittings.

Common Applications and Problem Solving

  • Replacement of worn or cracked radiator coolant hoses in Land Rover Range Rover models
  • Resolving coolant leaks caused by hose degradation or improper fit
  • Addressing overheating issues related to compromised coolant flow
  • Upgrading to a molded hose for improved fit and reduced installation errors
  • Maintaining cooling system integrity with OEM-quality components

Installation Notes and Tips

Ensure the cooling system is fully depressurized and cooled before removing the old hose. The molded design and quick connect fittings of the Gates 51703 hose simplify alignment and attachment. Verify all connections are secure and free of debris to prevent leaks. Use appropriate clamps if required by the vehicle’s service manual. Inspect surrounding components for wear during installation.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 51703 to meet stringent quality standards, using materials selected for heat and pressure resistance. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Using this hose helps maintain the reliability of the Land Rover Range Rover cooling system.

BrandGates
Part Number51703
PositionMolded Coolant Hose, Upper
MaterialEpdm, plastic, steel
End 1 Inside Diameter1.5
End 1 Inside Diameter38
End 2 Inside Diameter1.5
End 2 Inside Diameter38
Contains SpringNo
Centerline Length15
Centerline Length38
Centerline Length381
End 3 Inside Diameter1.5
End 4 Inside Diameter1.5
End 4 Inside Diameter38
Branch Quantity3
9839Yes
98452
Inside Diameter 5 (in).6
Inside Diameter 5 (mm)15
Inside Diameter 6 (in).6
Inside Diameter 6 (mm)15
Modular Components3 branches, 2 female quick connectors, outlet
Modular HoseYes
MoldedYes
Number of Quick Connect Fittings2

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009Land RoverRange Rover4.2LV8GASUpperMolded Coolant Hose
2008Land RoverRange Rover4.2LV8GASUpperMolded Coolant Hose
2007Land RoverRange Rover4.2LV8GASUpperMolded Coolant Hose
2006Land RoverRange Rover4.2LV8GASUpperMolded 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:

27459X517036H428063CAPCH502390

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.