Dayco 72931 Radiator Coolant Hose - Lower

Curved Lower Radiator Hose for Buick Verano

Dayco 72931 is a curved radiator coolant hose built for lower cooling-system routing on select Buick Verano models. Made from EPDM rubber and finished in black, it follows the OE-style path needed for a clean, direct replacement on 2012-2017 Buick Verano, lower applications.

The Dayco Curved Radiator Hose line focuses on formed hose geometry and application-specific sizing for cooling system service. Part number 72931 uses a single I.D. hose design with 1 5/16-inch inside diameters at both ends, helping maintain a proper fit where the hose must bend and route around engine components.

Key Features

• Dayco 72931 curved radiator coolant hose
• Fits 2012-2017 Buick Verano, lower
• EPDM construction for cooling-system use
• Black finish for OE-style appearance
• Single I.D. hose design
• End 1 inside diameter: 1 5/16 in.
• End 2 inside diameter: 1 5/16 in.
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Detailed Description

Dayco 72931 is a formed lower radiator hose for Buick Verano cooling system service. Its curved shape supports the factory routing used on 2012-2017 Buick Verano, lower installations, while the EPDM rubber construction is suited for coolant exposure and underhood temperature cycling. The hose measures 1 5/16 inches inside diameter at both ends and 1 23/32 inches outside diameter at both ends, which helps match the original connection points during replacement. If you are searching for a Buick Verano lower radiator hose, Dayco 72931 provides a direct-fit option for the listed application.

This part number, 72931, is also a practical reference when sourcing a Dayco curved radiator hose for the same vehicle coverage. It cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Cooling System Issues

• Cracked or split lower radiator hose
• Coolant leaks at the hose connection points
• Softening or swelling from heat and age
• Restricted coolant flow from hose deterioration
• Improper routing after a damaged hose replacement

Installation Notes and Tips

Verify the lower hose routing and end diameters before installation on your Buick Verano. Inspect the mating necks, clamps, and nearby components for wear or corrosion before fitting Dayco 72931. Confirm the hose follows the original curved path without twisting so the cooling system maintains proper alignment and sealing.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, supporting application-specific cooling system service. Part number 72931 is built as a formed replacement for the listed Buick Verano lower radiator hose application.