Dayco 72982 Radiator Coolant Hose - Lower

Curved Lower Radiator Hose for Lexus IS

Dayco 72982 is a curved radiator coolant hose built for lower cooling-system routing on select Lexus IS models. Made from EPDM and finished in black, it provides a direct-fit replacement for applications that require a 1 1/2-inch inside diameter at both ends.

This Dayco Curved Radiator Hose line is engineered for cooling-system service where formed hose shape matters. Part number 72982 follows the OE-style curved layout needed to route coolant cleanly in the engine bay while meeting SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.

• EPDM construction for coolant-hose service
• Black finish for a clean OE-style appearance
• 1 1/2 in. inside diameter at both ends
• 1 7/8 in. outside diameter at both ends
• Single I.D. hose design
• Curved lower radiator hose routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Dayco 72982 replacement hose for select Lexus IS applications

Detailed Product Overview

Dayco 72982 is a molded lower radiator coolant hose for select 2014-2018 Lexus IS applications, including Lexus IS250, Lexus IS350, and Lexus IS300 models. The curved shape supports the factory hose path, while the EPDM rubber construction is suited for coolant transfer in the engine cooling system. If you are replacing a worn lower hose on a Lexus IS300, Lexus IS350, or Lexus IS250, this part number 72982 matches the specified diameter and formed profile for the listed vehicles.

Vehicle Fitment

• Fits 2016-2018 Lexus IS300, lower
• Fits 2018 Lexus IS350, lower, to 10/2017
• Fits 2014-2017 Lexus IS350, lower
• Fits 2014-2015 Lexus IS250, lower

Common Replacement Reasons

• Cracked or hardened lower radiator hose
• Coolant seepage at the hose body or ends
• Loss of flexibility from heat cycling
• Incorrect hose shape after prior repair
• Cooling-system service on Lexus IS250, IS350, or IS300 models

Installation Notes

Verify the hose routing, end diameters, and lower-position application before installation. Inspect the mating necks, clamps, and nearby cooling-system components for wear or corrosion before fitting the new hose. Confirm the vehicle build date on 2018 Lexus IS350 applications, since the listing applies to vehicles built to 10/2017.

Quality Assurance

Dayco manufactures cooling-system hoses to published SAE specifications, including SAE J20R4 Class D-1 and SAE J1684 Type EC for this part. Part number 72982 is a formed EPDM radiator hose designed for the listed Lexus fitments and cooling-system service requirements.