Dayco 72006 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 72006

Dayco 72006 is a curved radiator coolant hose built for upper cooling-system routing on select Mercedes-Benz applications. Made from EPDM and finished in black, it uses a dual I.D. hose design to match the varying connection sizes found in the listed vehicles.

This Dayco Curved Radiator Hose line is focused on direct-fit cooling-system service parts for passenger vehicles and light-duty applications. For buyers searching for a Mercedes-Benz ML320 upper radiator hose or a Mercedes-Benz CLK320 coolant hose replacement, 72006 provides the correct curved profile and SAE-rated construction.

Key Features

• EPDM rubber construction for coolant-system service
• Black finish for a clean OE-style appearance
• Dual I.D. hose design with 1 11/32 in. and 1 9/16 in. inside diameters
• Curved upper radiator hose profile
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 72006 for easy catalog lookup

Detailed Description

Dayco 72006 is a radiator coolant hose engineered for upper hose routing where a curved shape and dual inside diameters are required. The EPDM material is selected for cooling-system use, while the SAE J20R4 Class D-1 and SAE J1684 Type EC specifications identify the hose as a service-grade cooling component. This part is listed for 2003-2005 Mercedes-Benz ML350, 1998-2003 Mercedes-Benz ML320, 1998-2002 Mercedes-Benz CLK320, 1999-2001 Mercedes-Benz ML430, and 1998-2000 Mercedes-Benz C280 in the upper position. If you are replacing a Mercedes-Benz ML430 upper radiator hose or sourcing a Mercedes-Benz C280 coolant hose, Dayco 72006 is the catalog reference to verify.

This part cross-references ACDelco 24436L and Gates 22580 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened upper radiator hose material
• Coolant seepage at the hose connection points
• Soft spots or swelling from age and heat cycling
• Incorrect hose shape or fitment on the upper cooling circuit
• Loss of cooling-system integrity from a deteriorated hose

Installation Notes and Tips

Verify the hose routing, end diameters, and upper-position fitment before installation. Inspect the radiator neck, engine outlet, and clamps for wear or corrosion, and replace any damaged sealing surfaces before installing the new hose. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality Assurance

Dayco manufactures this hose to meet published SAE cooling-hose specifications, including SAE J20R4 Class D-1 and SAE J1684 Type EC. The EPDM construction and application-specific curved design support accurate replacement for the listed Mercedes-Benz models.