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Dayco 72540 Radiator Coolant Hose - Upper
| Brand | Dayco 72540 |
|---|---|
| Position | Upper |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 1 5/16 |
| End 2 Inside Diameter | 1 5/16 |
| Contains Heat Shield | N |
| Contains Protective Sleeve | N |
| End 1 Outside Diameter | 1 23/32 |
| End 2 Outside Diameter | 1 23/32 |
| Hose Type | Single i.d. hose |
| SAE Specification | Sae j20r4 class d-1, sae j1684 type ec |
| Trunk Height | 19 1/2 |
| Product line | Curved Radiator Hose |
| Fits | Buick, Cadillac, and Chevrolet · 24 vehicles |
Curved radiator hose. Single I.D. hose made from EPDM for dependable coolant flow.
SAE compliant. Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards.
Black finish. Clean, uniform appearance for a tidy engine bay.
Cross-references ACDelco 24703L, CARQUEST 23719 and Duralast E72540 for the same application. See all 12.
Dayco Curved Radiator Hose for Upper Cooling Service
The Dayco 72540 curved radiator hose is a direct-fit coolant hose for upper radiator routing on select Chevrolet, Cadillac, Buick, and GM applications. Built from EPDM rubber and formed in a curved profile, it supports reliable coolant transfer in vehicles such as the Chevrolet Impala, Cadillac XTS, and Buick LaCrosse.
Key Features
- EPDM construction for coolant-system durability
- Black curved radiator hose with a single I.D. hose design
- 1 5/16 in. inside diameter at both ends
- 1 23/32 in. outside diameter at both ends
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Upper hose routing for confirmed vehicle applications
- Cross-references Dayco 72540 for the same application
Product Details
Dayco Curved Radiator Hose 72540 is built for upper radiator hose service where a formed hose is required to maintain proper coolant flow and routing. The EPDM rubber construction is suited for engine cooling environments, while the curved shape and matched end diameters help support a secure connection at both ends. This hose is listed for 2014-2020 Chevrolet Impala, upper; 2013-2019 Cadillac XTS, upper; 2010-2016 Buick LaCrosse, upper; and 2010 Buick Allure, upper. It also cross-references ACDelco 24703L for the same application.
What This Hose Helps Address
- Cracked or hardened upper radiator hose material
- Coolant leaks at the hose body or connection points
- Restricted coolant transfer caused by hose deterioration
- Improper hose routing from a worn or collapsed formed hose
- Cooling-system service on Chevrolet Impala, Cadillac XTS, and Buick LaCrosse models
Installation Notes and Tips
Verify the upper hose routing, end diameters, and vehicle application before installation. Inspect hose clamps, radiator necks, and engine fittings for wear or corrosion before transferring the new hose into service. Confirm clearance around nearby components so the curved profile seats without twisting or kinking.
Quality Assurance
Dayco manufactures this radiator coolant hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Chevrolet | Impala | — | — | Upper | Curved Radiator Hose |
| 2019 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2019 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2018 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2018 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2017 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2017 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2016 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2016 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2016 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2015 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2015 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2015 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2014 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2014 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2014 | Chevrolet | Impala | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2013 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2013 | Cadillac | XTS | — | — | Upper | Curved Radiator Hose |
| 2012 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2011 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2010 | Buick | Allure | 3.0L | V6 | Upper | Curved Radiator Hose |
| 2010 | Buick | Allure | 3.6L | V6 | Upper | Curved Radiator Hose |
| 2010 | Buick | LaCrosse | 3.0L | V6 | Upper | Curved Radiator Hose |
| 2010 | Buick | LaCrosse | 3.6L | V6 | Upper | Curved Radiator Hose |
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