Dayco 72880 Radiator Coolant Hose - Lower

Curved Lower Radiator Hose for Mazda Cooling Systems

Dayco Curved Radiator Hose 72880 is a lower radiator coolant hose built for specific Mazda applications. It uses EPDM construction and a curved profile to match the routing required in the cooling system.

Key Features

• EPDM rubber construction for coolant-system service
• Black finish
• Single I.D. hose design
• 1 1/4 in. inside diameter at both ends
• 1 5/8 in. outside diameter at both ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Curved radiator hose profile for lower hose routing

Product Details

Dayco 72880 is a curved radiator hose in the Curved Radiator Hose line, made for lower coolant hose applications where the hose must follow a formed path between connection points. The EPDM material is suited for coolant exposure and the hose dimensions are matched to a 1 1/4 inch inside diameter on both ends. This part number is listed for 2014-2018 Mazda 3, 2014-2018 Mazda 3 Sport, 2014-2018 Mazda 6, and 2013-2018 Mazda CX-5 in the lower position. Dayco 72880 is a direct-fit style replacement for these Mazda cooling system applications.

What This Hose Helps Address

• Cracked or split lower radiator hose
• Coolant leaks at the hose body
• Softening or deterioration from heat and age
• Incorrect hose routing on a curved lower connection
• Restricted coolant flow caused by a damaged hose

Installation Notes and Tips

Verify the hose routing, end diameters, and lower-position fitment before installation. Inspect the mating necks, clamps, and surrounding cooling components for wear or corrosion, and replace any damaged parts as needed. Confirm the hose is seated fully and routed without kinks or twist before refilling and bleeding the cooling system.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator coolant hose service. The Curved Radiator Hose line is built for formed cooling-system routing in Mazda applications, including Mazda 3, Mazda 6, and CX-5 models listed above.