Dayco 73114 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose for Mercedes-Benz

Dayco Part Number 73114 is a branched lower radiator coolant hose built for specific Mercedes-Benz applications. It is made from EPDM rubber and includes a protective sleeve to help manage underhood wear in demanding cooling-system service.

Key Features

• EPDM construction for coolant-system durability
• Black finish for a clean OE-style appearance
• Branched hose design for the specified cooling layout
• Protective sleeve included for added abrasion resistance
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco 73114 radiator coolant hose for lower hose applications

Product Details

This Dayco curved radiator hose is engineered for lower cooling-system routing on 2006-2009 Mercedes-Benz C230, 2006-2007 Mercedes-Benz C280, and 2006-2007 Mercedes-Benz C350. The hose uses EPDM material for coolant exposure and temperature resistance, with multiple formed ends sized to match the application’s branched layout. Dayco 73114 is a direct-fit cooling hose solution for Mercedes-Benz C230 lower radiator hose replacement, Mercedes-Benz C280 lower radiator hose service, and Mercedes-Benz C350 lower coolant hose replacement.

The hose features end inside diameters of 1 21/32, 1 13/16, and 7/8 inches, with corresponding outside diameters listed for the formed connections. Its branched configuration and protective sleeve support proper routing in the engine bay while maintaining the intended coolant path. If you are replacing a worn or leaking lower radiator hose on a Mercedes-Benz C230, C280, or C350, Part Number 73114 provides the correct fitment and hose style for the listed vehicles.

What It Helps Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or collapse of the original hose
• Improper coolant flow caused by damaged hose routing
• Chafing or wear at the hose contact points
• Cooling-system service on the listed Mercedes-Benz models

Installation Notes and Tips

Verify the vehicle year, model, and lower hose routing before installation. Inspect hose clamps, mating necks, and nearby cooling components for wear or corrosion before transferring the new hose into place. Confirm that the protective sleeve is positioned correctly and that the hose follows the original routing without twisting or kinking.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent cooling-system service for the specified Mercedes-Benz applications. Part Number 73114 is built for the listed fitment and hose configuration.