Gates 51374 Radiator Coolant Hose - Reservoir (Lower)

Gates Molded Coolant Hose for BMW X3

The Gates 51374 molded coolant hose is built for specific cooling-system applications and follows OE-style routing and connection points. It is a direct-fit radiator coolant hose for the lower reservoir position on select 2006-2011 BMW X3 models.

Gates Molded Coolant Hose products are engineered around application-specific layouts, including integrated components commonly found in original equipment designs. This part number 51374 uses molded construction with EPDM, plastic, and steel materials, plus two female quick connectors for a precise connection at the reservoir (lower) location.

Key Features

• Part number: 51374
• Brand line: Gates Molded Coolant Hose
• Fits 2006-2011 BMW X3, reservoir (lower)
• Molded radiator coolant hose with OE-style fitment
• Material construction: EPDM, plastic, and steel
• Includes 2 female quick connectors
• Modular coolant hose design for application-specific routing
• Centerline length: 34.5 in. (876 mm)
• End 1 inside diameter: 0.8 in. (20 mm)
• End 2 inside diameter: 0.8 in. (20 mm)

Detailed Description

The Gates 51374 radiator coolant hose is made for the lower reservoir connection on BMW X3 cooling systems from 2006 through 2011. It is molded to match the required path and connection style, helping maintain proper coolant flow in the vehicle’s cooling circuit. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

As part of the Gates Molded Coolant Hose line, this modular hose is built to mirror the original equipment layout more closely than a universal hose. The integrated quick-connect design and molded shape make it a fitment-specific replacement for BMW X3 coolant hose service, especially when replacing a lower reservoir hose that uses OE-style connectors.

What It Helps Address

• Cracked or deteriorated lower reservoir coolant hose
• Coolant seepage at quick-connect hose ends
• Improper hose routing from a previous repair
• Loss of coolant flow caused by damaged hose construction
• Fitment issues when replacing an OE-style molded hose on a BMW X3

Installation Notes and Tips

Verify the vehicle year, model, and reservoir (lower) hose location before ordering. Compare the original hose routing, connector style, and centerline length to the replacement part number 51374. Inspect mating connectors and sealing surfaces for wear or damage before installation, and confirm the hose seats fully at both quick-connect ends.

Quality Assurance

Gates is a recognized aftermarket supplier in modular coolant hose assemblies, and this hose is manufactured to application-specific OE-style requirements for the BMW X3 cooling system.