HomeBelts and Cooling > Hoses and PipesGates 51409 Radiator Coolant Hose - Upper
Part #: 51409

Gates 51409 Radiator Coolant Hose - Upper

Molded Coolant Hose, Upper
⚙️ 27 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Coolant Hose, Upper
🚗Fitment: Mercedes-Benz, C300, C350, E300, E350, and GLK350
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Gates Molded Coolant Hose 51409

The Gates Molded Coolant Hose 51409 is engineered for reliable cooling system performance in select Mercedes-Benz vehicles. Designed with durable EPDM, plastic, and steel materials, this radiator coolant hose ensures consistent coolant flow and system integrity for models like the C300, C350, E300, E350, and GLK350.

  • Constructed from EPDM, plastic, and steel for durability and heat resistance
  • Molded design with a centerline length of 18.5 inches (470 mm)
  • Features two quick connect fittings: 2 Henn and 2 male connectors
  • Inside diameter of 1.4 inches (36 mm) at one end for precise fitment
  • Modular hose design compatible with specific Mercedes-Benz cooling systems

Detailed Product Description

The Gates Molded Coolant Hose 51409 belongs to the Molded Coolant Hose product line, which focuses on precision-engineered hoses tailored for specific vehicle applications. This hose is molded to exact specifications, providing a secure and leak-resistant connection within the cooling system. Its construction from EPDM rubber, plastic, and steel components offers resistance to heat, pressure, and coolant chemicals, ensuring long-term durability. The hose includes two quick connect fittings—two Henn quick connectors and two male quick connectors—facilitating straightforward installation and reliable sealing without the need for additional clamps or springs.

Compatible Vehicles and Applications

  • Designed for Mercedes-Benz C300 and C350 models
  • Compatible with Mercedes-Benz E300 and E350 vehicles
  • Fits Mercedes-Benz GLK350 cooling systems requiring this specific radiator coolant hose
  • Ideal for replacing worn or damaged radiator coolant hoses in these models

Common Issues Addressed by This Radiator Coolant Hose

  • Prevents coolant leaks caused by cracked or deteriorated hoses
  • Maintains proper coolant flow to avoid engine overheating
  • Eliminates hose collapse or deformation under pressure
  • Ensures secure connections with quick connect fittings to reduce maintenance time
  • Resists chemical degradation from coolant fluids and engine heat

Installation Notes and Tips

  • Verify compatibility with your Mercedes-Benz model before installation
  • Ensure all old hose material and debris are removed from connection points
  • Use the quick connect fittings to secure the hose without additional clamps
  • Inspect surrounding components for wear during replacement
  • Check for leaks after installation by running the engine to operating temperature

Quality Assurance and Warranty

Gates Molded Coolant Hose 51409 is manufactured to meet OEM standards for fit, form, and function. The use of high-quality EPDM, plastic, and steel materials ensures resistance to heat and chemical exposure typical in automotive cooling systems. While specific warranty details are not provided, Gates products generally adhere to strict quality control processes to support reliable vehicle operation.

BrandGates
Part Number51409
PositionMolded Coolant Hose, Upper
MaterialEpdm, plastic, steel
End 1 Inside Diameter1.4
End 1 Inside Diameter36
Contains SpringNo
Centerline Length18.5
Centerline Length470
Branch Quantity0
9839Yes
98452
Modular Components2 henn quick connectors
Modular Components2 male quick connectors
Modular HoseYes
MoldedYes
Number of Quick Connect Fittings2

This part fits 27 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2016Mercedes-BenzE3003.5LV6GASUpperMolded Coolant Hose
2016Mercedes-BenzE3503.5LV6FLEXUpperMolded Coolant Hose
2016Mercedes-BenzE3503.5LV6GASUpperMolded Coolant Hose
2015Mercedes-BenzC3503.5LV6GASUpperMolded Coolant Hose
2015Mercedes-BenzE3503.5LV6FLEXUpperMolded Coolant Hose
2015Mercedes-BenzE3503.5LV6GASUpperMolded Coolant Hose
2015Mercedes-BenzGLK3503.5LV6GASUpperMolded Coolant Hose
2014Mercedes-BenzC3003.5LV6FLEXUpperMolded Coolant Hose
2014Mercedes-BenzC3003.5LV6GASUpperMolded Coolant Hose
2014Mercedes-BenzC3503.5LV6FLEXUpperMolded Coolant Hose
2014Mercedes-BenzC3503.5LV6GASUpperMolded Coolant Hose
2014Mercedes-BenzE3003.5LV6GASUpperMolded Coolant Hose
2014Mercedes-BenzE3503.5LV6FLEXUpperMolded Coolant Hose
2014Mercedes-BenzE3503.5LV6GASUpperMolded Coolant Hose
2014Mercedes-BenzGLK3503.5LV6GASUpperMolded Coolant Hose
2013Mercedes-BenzC3003.5LV6FLEXUpperMolded Coolant Hose
2013Mercedes-BenzC3003.5LV6GASUpperMolded Coolant Hose
2013Mercedes-BenzC3503.5LV6FLEXUpperMolded Coolant Hose
2013Mercedes-BenzC3503.5LV6GASUpperMolded Coolant Hose
2013Mercedes-BenzE3003.5LV6GASUpperMolded Coolant Hose
2013Mercedes-BenzE3503.5LV6FLEXUpperMolded Coolant Hose
2013Mercedes-BenzE3503.5LV6GASUpperMolded Coolant Hose
2013Mercedes-BenzGLK3503.5LV6GASUpperMolded Coolant Hose
2012Mercedes-BenzC3503.5LV6FLEXUpperMolded Coolant Hose
2012Mercedes-BenzC3503.5LV6GASUpperMolded Coolant Hose
2012Mercedes-BenzE3503.5LV6FLEXUpperMolded Coolant Hose
2012Mercedes-BenzE3503.5LV6GASUpperMolded 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:

204501398224811L51409R28616

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