Dayco 72838 Radiator Coolant Hose - Lower

Dayco 72838 Curved Radiator Hose

Dayco 72838 is a lower branched radiator coolant hose for Mercedes-Benz Sprinter applications. Built from EPDM and finished in black, it follows the curved routing needed for the cooling system on select Sprinter 1500, Sprinter 2500, Sprinter 3500, and Sprinter 3500XD models.

The Dayco Curved Radiator Hose line focuses on replacement hoses shaped for vehicle-specific cooling layouts. This hose uses SAE J20R4 Class D-1 and SAE J1684 Type EC construction standards, with branched hose geometry and matched end diameters for proper coolant flow routing.

Key Features

• Part number 72838
• Lower radiator coolant hose for select Mercedes-Benz Sprinter models
• EPDM construction for cooling system service
• Black finish
• Branched hose design with curved routing
• End 1 inside diameter: 1 9/32 in.
• End 2 inside diameter: 1 9/32 in.
• End 3 inside diameter: 21/32 in.
• SAE J20R4 Class D-1 and SAE J1684 Type EC specification

Detailed Description

Dayco 72838 is a curved lower radiator hose engineered for Mercedes-Benz Sprinter cooling system service. It fits 2019-2023 Mercedes-Benz Sprinter 1500, lower; 2010-2023 Mercedes-Benz Sprinter 2500, lower; 2010-2022 Mercedes-Benz Sprinter 3500, lower; and 2018-2022 Mercedes-Benz Sprinter 3500XD, lower. The branched hose layout supports the factory-style coolant path, while the EPDM material is suited for routine engine bay heat and coolant exposure.

Use this hose when replacing a worn or damaged lower coolant hose on a Mercedes-Benz Sprinter 2500 or Mercedes-Benz Sprinter 3500 application. Part number 72838 is also a direct search term for buyers looking for a Dayco 72838 lower radiator hose for Sprinter cooling system repair.

What It Helps Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or deterioration of the hose material
• Restricted coolant routing caused by hose collapse or deformation
• Cooling system service on a Mercedes-Benz Sprinter 1500, 2500, 3500, or 3500XD
• Replacement of a curved branched hose with the correct factory-style shape

Installation Notes and Tips

Verify hose routing, end diameters, and lower-position fitment before installation. Inspect adjoining clamps, radiator necks, and engine connections for wear or corrosion, and confirm the cooling system is properly filled and bled after service. This hose does not list a heat shield or protective sleeve.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for cooling system applications. The EPDM construction and vehicle-specific curved design support consistent fitment on confirmed Mercedes-Benz Sprinter applications.