Dayco 72997 Radiator Coolant Hose - Lower

Curved Lower Radiator Hose for Tacoma

Dayco 72997 is a curved lower radiator coolant hose built for the cooling system on select Toyota Tacoma models. Made from EPDM and finished in black, it follows the lower hose routing needed for a direct replacement on 2016-2023 Toyota Tacoma applications.

The Dayco Curved Radiator Hose line focuses on application-specific hose shapes and dimensions for cooling system service. Part number 72997 uses a single I.D. hose design with matching 1 5/16-inch inside diameters at both ends, helping it align with the factory-style lower radiator hose path on the Tacoma.

Key Features

• Brand: Dayco
• Part number: 72997
• Curved lower radiator coolant hose
• EPDM construction for cooling system use
• Black finish
• Single I.D. hose design
• End 1 inside diameter: 1 5/16 in.
• End 2 inside diameter: 1 5/16 in.
• End 1 outside diameter: 1 23/32 in.
• End 2 outside diameter: 1 23/32 in.
• SAE J20R4 Class D-1 and SAE J1684 Type EC specification

Detailed Description

Dayco 72997 is a lower radiator hose for 2016-2023 Toyota Tacoma trucks, with fitment listed for the lower position. Its curved shape supports the routing required in the Tacoma cooling system, while the EPDM material is selected for radiator coolant service and the SAE J20R4 Class D-1 and SAE J1684 Type EC specifications provide a clear reference for hose construction requirements. If you are replacing a worn Toyota Tacoma lower radiator hose, this part number 72997 offers the correct hose profile and end sizing for the listed application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or deterioration of the original hose material
• Improper hose routing caused by a damaged curved hose
• Cooling system service on a 2016-2023 Toyota Tacoma
• Loss of coolant flow through the lower radiator connection

Installation Notes and Tips

Verify the lower hose routing and end diameters before installation. Inspect the radiator neck, engine connection points, and clamps for wear or corrosion before transferring the hose into service. Confirm the hose follows the factory path without twisting so the Tacoma cooling system maintains proper clearance and alignment.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator coolant hose service. The EPDM construction and application-specific dimensions support consistent fitment for the listed Toyota Tacoma lower hose application.