Dayco 72073 Radiator Coolant Hose - Lower

Dayco 72073 Curved Radiator Hose Overview

Dayco 72073 is a curved radiator coolant hose built for lower cooling-system routing on select Toyota and Lexus SUVs. Made from EPDM rubber, this dual I.D. hose is shaped to match the application and support reliable coolant flow in demanding engine bay conditions.

Compatible with 1998-2007 Toyota Land Cruiser lower radiator hose applications and 1998-2007 Lexus LX470 lower radiator hose applications, this hose is a direct-fit replacement for vehicles that need a curved radiator hose with dual inside diameters.

Key Features

• EPDM construction for coolant-hose service
• Black finish for OE-style appearance
• Dual I.D. hose design with 1 7/16 in. end 1 and 1 5/8 in. end 2
• Curved radiator hose profile for lower hose routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line for application-specific cooling system replacement

Detailed Description

Dayco 72073 is engineered as a lower radiator coolant hose for the Toyota Land Cruiser and Lexus LX470, covering 1998-2007 model years. The curved shape follows the factory routing, while the dual inside diameter design matches the connection points used in this application. If you are replacing a worn lower radiator hose on a Toyota Land Cruiser or Lexus LX470, Dayco 72073 provides the correct fitment profile for the cooling system connection.

This part cross-references Toyota 16572-50150 for the same application.

Common Problems This Hose Can Address

• Coolant leaks from a cracked or aged lower radiator hose
• Softening, swelling, or collapse of the original EPDM hose
• Improper hose routing after a previous repair
• Loss of coolant flow caused by a deteriorated radiator connection
• Replacement needs for a Toyota Land Cruiser lower radiator hose or Lexus LX470 lower radiator hose

Installation Notes and Tips

Verify end diameters before installation: 1 7/16 in. on one end and 1 5/8 in. on the other. Confirm the hose follows the lower radiator path on the vehicle and inspect clamps, radiator necks, and adjoining coolant components for wear before reassembly. This hose does not include a heat shield or protective sleeve.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and performance standards for cooling-system service.