Dayco 72992 Radiator Coolant Hose - Lower

Dayco 72992 Curved Radiator Hose for Frontier

Dayco 72992 is a curved radiator coolant hose built for the lower cooling circuit on select Nissan Frontier models. It uses EPDM construction with a black finish and a protective sleeve to help manage underhood exposure in demanding cooling-system service.

Key Features

• EPDM rubber construction for coolant-system durability
• Curved radiator hose design for lower hose routing
• Protective sleeve included for added abrasion resistance
• Single I.D. hose with 1 5/16 in. inside diameter at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black finish for a clean OE-style appearance

Product Details

This Dayco curved radiator hose is engineered for the lower radiator connection on 2005-2019 Nissan Frontier applications. The hose measures 22 1/2 in. in trunk height and features 1 11/16 in. outside diameter at both ends, supporting a secure fit in the cooling system layout. Dayco 72992 is a direct-fit style replacement for Frontier lower radiator hose service where the original hose has aged, softened, or cracked.

The Dayco Curved Radiator Hose line focuses on application-specific hose routing and material selection for cooling-system service. For Nissan Frontier owners, that means a lower radiator hose shaped to follow the factory path while maintaining the correct inside diameter and hose profile for the vehicle’s cooling circuit.

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

What It Helps Fix

• Coolant leaks from a worn lower radiator hose
• Cracking or hardening from heat and age
• Soft spots or swelling in the hose body
• Restricted coolant flow caused by hose collapse
• Fitment issues from an incorrect hose shape on Nissan Frontier cooling repairs

Installation Notes and Tips

Verify the lower hose routing and end diameters before installation on your Nissan Frontier. Inspect hose clamps, radiator necks, and the thermostat housing connection for corrosion or damage before reassembly. After installation, refill the cooling system with the correct coolant and check for leaks at operating temperature.

Quality Assurance

Dayco 72992 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator hose applications. It is a fitment-specific replacement for 2005-2019 Nissan Frontier, lower hose service.