Gates 51415 Radiator Coolant Hose - Lower

Gates 51415 Molded Coolant Hose Overview

The Gates 51415 molded coolant hose is a radiator coolant hose built for specific Mercedes-Benz applications with OE-style routing and integrated modular components. It is shaped to follow the factory cooling system layout and uses EPDM, plastic, and steel construction for the correct fit and connection points.

Compatible with 2006-2009 Mercedes-Benz E350 lower coolant hose applications and 2007 Mercedes-Benz E550 lower coolant hose applications, this Gates molded coolant hose supports direct replacement needs where the original hose assembly uses quick-connect fittings and branch routing. The Gates 51415 part number is also referenced for OE-style service replacement searches.

Key Features

• Gates Molded Coolant Hose line for application-specific cooling system replacement
• Part number 51415
• EPDM, plastic, and steel construction
• Molded hose design with one branch
• Includes 2 quick-connect fittings
• Modular hose assembly with branch and quick connectors
• End sizes listed at 33 mm and 36 mm, with a 0.7 in branch connection
• Centerline length listed at 24.25 in / 616 mm

Product Details

Gates Molded Coolant Hose products are built for vehicle-specific cooling system layouts and are similar to OEM specifications, including integrated components such as branches and quick-connectors. The 51415 hose follows that modular approach for Mercedes-Benz E350 and E550 lower hose service, helping maintain the original hose path and connection style in the engine cooling circuit. If you are searching for a Mercedes-Benz E350 lower radiator coolant hose or a Mercedes-Benz E550 molded coolant hose, this part number is a direct reference point.

This part cross-references Genuine 2115014682 for the same application.

Common Problems This Hose Can Address

• Cracked or leaking lower radiator hose assembly
• Damaged quick-connect fitting at the coolant line connection
• Improper hose routing after cooling system service
• Coolant seepage from aged molded hose material
• Loss of factory-style fit at branch or connector points

Installation Notes and Tips

Confirm the vehicle application before installation by matching the lower hose routing, connector style, and end dimensions to the original assembly. Inspect the mating coolant ports, quick-connect interfaces, and nearby clamps or retainers for wear before transferring the new hose into place. After installation, refill and bleed the cooling system according to Mercedes-Benz service procedures and check for leaks at all connection points.

Quality Assurance

Gates is a recognized automotive aftermarket supplier in modular coolant hose assemblies, and this hose is manufactured to align with specific applications and OE-style component integration. The molded design and connector layout are intended to match the factory cooling system configuration for the listed Mercedes-Benz models.