Gates 22581 Radiator Coolant Hose - Lower

Gates 22581 Molded Coolant Hose

Gates 22581 is a molded radiator coolant hose built to OEM-quality specifications for lower cooling-system service. It is formed from EPDM and shaped for the correct routing on select Mercedes-Benz ML-Class applications, including lower hose replacement on ML320, ML430, ML500, ML55 AMG, and ML350 models.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant applications. This hose follows the molded profile needed for proper fitment and cooling-system routing on the vehicle, helping simplify radiator hose replacement on the specified Mercedes-Benz applications.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 22581
• Part type: radiator coolant hose
• Material: EPDM
• Molded construction for application-specific routing
• End inside diameters: 1.38 in. (35 mm) and 1.62 in. (41 mm)
• Centerline length: 16.3 in. (414 mm)
• Contains spring: No
• Quick connect fittings: 0

Detailed Description

Gates 22581 is a molded lower coolant hose for select Mercedes-Benz ML-Class vehicles. It is engineered to match OEM-style dimensions and routing, with EPDM construction for use in cooling-system service. This hose is listed for 2003-2005 Mercedes-Benz ML350, 2002-2005 Mercedes-Benz ML500, 2003 Mercedes-Benz ML320, 2002-2003 Mercedes-Benz ML55 AMG, and additional 1998-2002 and 1999-2001 ML320, ML430, and ML55 AMG applications with notes for preheater-equipped vehicles.

This part cross-references Dayco 72007 and Continental 66700 for the same application. If you are replacing a lower radiator hose on a Mercedes-Benz ML320, ML430, ML500, or ML55 AMG, Gates 22581 provides the molded shape and dimensions needed for the specified fitment.

Common Problems This Hose Can Address

• Cracked or hardened lower radiator hose material
• Coolant leaks at the hose body from age or heat cycling
• Incorrect hose routing after a previous replacement
• Fitment issues on molded lower hose applications
• Cooling-system service on Mercedes-Benz ML-Class vehicles

Installation Notes and Tips

Verify the vehicle year, model, and engine configuration before ordering, especially on 1998-2002 ML320, 1999-2001 ML430, and 2000-2001 ML55 AMG applications that note engine preheater variations. Compare the original hose shape, end diameters, and centerline length before installation. Inspect clamps, mating surfaces, and nearby cooling-system components during replacement to confirm a proper seal.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for the listed applications. The molded design and EPDM construction support accurate replacement of the original lower radiator hose on compatible Mercedes-Benz ML-Class vehicles.