Dayco 72040 Radiator Coolant Hose - Upper
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Dayco

Dayco 72040 Radiator Coolant Hose - Upper

Brand Dayco 72040
Position Upper
Material Epdm
Color Black
End 1 Inside Diameter 1 7/16
End 2 Inside Diameter 1 19/32
Contains Heat Shield N
Contains Protective Sleeve N
Hose Type Dual i.d. hose
SAE Specification Sae j20r4 class d-1, sae j1684 type ec
Trunk Height 11
Fits —

Curved radiator hose. Dual I.D. design for a precise coolant connection.

EPDM construction. Resists heat and coolant exposure for dependable service.

SAE-compliant hose. Built to meet J20R4 Class D-1 and J1684 Type EC standards.

Cross-references ACDelco 20456S, CARQUEST 23096 and Duralast C72040 for the same application. See all 6.

$30.70Free shipping
In stock · usually ships same day before 1pm CST
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Order total $30.70
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Radiator Coolant Hose options

Curved Radiator Hose for Cooling System Service

Dayco 72040 is a curved radiator coolant hose built for cooling system repairs that require a dual I.D. hose with different end diameters. Made from EPDM and finished in black, it is engineered to handle coolant flow in demanding underhood conditions. This Dayco 72040 hose is a practical replacement choice for applications such as Isuzu truck and SUV cooling system service.

Key Features

  • EPDM construction for coolant hose durability
  • Dual I.D. hose design with 1 7/16 in. end 1 inside diameter and 1 19/32 in. end 2 inside diameter
  • Curved radiator hose profile for routed cooling system connections
  • Black finish for a clean OE-style appearance
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Dayco Curved Radiator Hose line for replacement cooling system hoses

Detailed Description

The Dayco Curved Radiator Hose line focuses on replacement hoses shaped for specific cooling system routing needs, including curved and dual-diameter applications. Part number 72040 is designed as a radiator coolant hose with EPDM material to help withstand heat, coolant exposure, and everyday engine bay conditions. For buyers searching for an Isuzu radiator hose, Isuzu coolant hose, or Dayco 72040 replacement hose, this part provides a direct-fit style solution for the listed application.

This part cross-references ACDelco 20456S and Gates 23096 for the same application.

What It Helps Address

  • Coolant leaks caused by cracked or aged radiator hose material
  • Softening, swelling, or hardening of an original hose
  • Improper hose routing in curved cooling system connections
  • Diameter mismatch at the two hose ends
  • Cooling system service on Isuzu truck and SUV applications

Installation Notes and Tips

Verify end diameters, hose routing, and overall shape before installation. Match the hose to the vehicle’s cooling system layout and inspect adjoining necks, clamps, and coolant passages for wear or corrosion. Proper coolant fill and bleed procedures should be followed after replacement to help restore normal system operation.

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 radiator coolant hose service.

Related reading

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 20456SCARQUEST — 23096Duralast — C72040Gates — 23096Isuzu — 8-97160-257-1NAPA — 9761