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Dayco 87985 HVAC Heater Hose - Heater To Engine
| Brand | Dayco 87985 |
|---|---|
| Position | Heater To Engine |
| Color | Black |
| End 1 Inside Diameter | 5/8 |
| End 1 Outside Diameter | 31/32 |
| End 2 Inside Diameter | 5/8 |
| End 2 Outside Diameter | 31/32 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R3 Class D-1, SAE J1684 Type EC |
| Trunk Height | 12 |
| Product line | Small I.D. Heater Hose |
| Fits | Ford and Lincoln · 5 vehicles |
EPDM construction. Resists heat and wear in demanding HVAC hose applications.
Single I.D. hose. Provides a consistent 5/8-inch inside diameter at both ends.
Black heater hose for HVAC hose and pipe applications.
Dayco Small I.D. Heater Hose 87985
Dayco 87985 is a Small I.D. Heater Hose built for heater-to-engine coolant routing in select Ford and Lincoln applications. It uses EPDM construction and a black finish, with 5/8-inch inside diameter ends for a direct-fit style replacement in the HVAC hose system.
Key Features
- EPDM heater hose construction for coolant transfer service
- 5/8-inch inside diameter at both ends
- Black hose with single I.D. hose design
- Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
- Dayco Small I.D. Heater Hose line for heater circuit routing
Product Details
This Dayco heater hose is part of the Small I.D. Heater Hose product line, which focuses on smaller-diameter coolant hose applications used in heater circuits. Part number 87985 is specified for heater-to-engine routing and is listed for 2003-2006 Ford Expedition without auxiliary heater and 2006 Lincoln Navigator without auxiliary heater. If you are searching for a Ford Expedition heater hose or a Lincoln Navigator heater hose, 87985 matches the listed configuration and hose size requirements.
The hose measures 31/32 inch outside diameter at both ends and does not include a heat shield or protective sleeve. Its EPDM material is commonly used in coolant hose service where flexibility and heat resistance are required. Dayco 87985 is also a useful search term when cross-checking heater hose replacement needs for the Ford Expedition and Lincoln Navigator platform.
Common Issues This Hose Addresses
- Cracked or deteriorated heater hose material
- Coolant seepage at the heater-to-engine hose route
- Restricted heater coolant flow from aged hose collapse
- Incorrect hose diameter during heater hose replacement
- Service replacement for a worn Ford Expedition or Lincoln Navigator heater hose
Installation Notes and Tips
Verify the vehicle is equipped without an auxiliary heater before ordering or installing Dayco 87985. Confirm the 5/8-inch inside diameter and heater-to-engine routing against the removed hose before installation. Inspect adjoining coolant fittings and clamps for wear, and replace any damaged components before refilling the cooling system.
Quality Assurance
Dayco 87985 is manufactured to SAE J20R3 Class D-1 and SAE J1684 Type EC standards for heater hose service. This part cross-references no listed interchange numbers in the provided data.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Ford | Expedition | — | — | Heater To Engine | Without auxiliary heater; Small I.D. Heater Hose |
| 2006 | Lincoln | Navigator | — | — | Heater To Engine | Without auxiliary heater; Small I.D. Heater Hose |
| 2005 | Ford | Expedition | — | — | Heater To Engine | Without auxiliary heater; Small I.D. Heater Hose |
| 2004 | Ford | Expedition | 5.4L | V8 | Heater To Engine | Without auxiliary heater; Small I.D. Heater Hose |
| 2003 | Ford | Expedition | 5.4L | V8 | Heater To Engine | Without auxiliary heater; Small I.D. Heater Hose |
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