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Dayco 87940 Engine Coolant Bypass Hose
| Brand | Dayco 87940 |
|---|---|
| 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 | 16 |
| Product line | Small I.D. Heater Hose |
| Fits | Ford · 8 vehicles |
EPDM construction. Resists heat and coolant exposure in a durable black hose.
Small I.D. hose. Built for compact coolant bypass routing with 5/8 in. ends.
SAE-rated hose. Meets SAE J20R3 Class D-1 and SAE J1684 Type EC standards.
Cross-references ACDelco 18482L, CARQUEST 12058 and Duralast E87940 for the same application. See all 9.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Dayco 87940 Small I.D. Heater Hose
Dayco 87940 is a Small I.D. Heater Hose built for engine coolant bypass service in select Ford applications. Made from EPDM and finished in black, it provides a direct-fit hose solution for coolant routing where a 5/8 in. inside diameter is required.
Compatible with 2008-2011 Ford Focus and 2010-2013 Ford Transit Connect, this hose matches the specified small I.D. heater hose application for those vehicles. The Dayco 87940 part number is also a useful reference when cross-checking replacement needs against OE and aftermarket listings.
Key Features
- EPDM construction for coolant hose service
- Black finish for a clean OE-style appearance
- 5/8 in. inside diameter at both ends
- Single I.D. hose design for coolant bypass routing
- Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
- Cross-reference part number: Ford 4S4Z-8548-A
Product Details
Dayco’s Small I.D. Heater Hose line focuses on coolant transfer applications that require precise sizing and dependable material performance. This hose uses EPDM, a common automotive hose material selected for coolant exposure, and its 31/32 in. outside diameter at both ends supports the listed 5/8 in. inside diameter fitment. Dayco 87940 is specified as an engine coolant bypass hose for Ford Focus and Ford Transit Connect models in the years shown below.
Fits 2008-2011 Ford Focus, N/A. Fits 2010-2013 Ford Transit Connect, N/A. This part cross-references Ford 4S4Z-8548-A for the same application.
Common Replacement Reasons
- Cracked or hardened heater hose material
- Coolant seepage at the hose body
- Incorrect hose diameter during repair
- Restricted coolant bypass flow
- Service replacement for aging Ford Focus or Ford Transit Connect cooling hoses
Installation Notes and Quality Assurance
Verify the hose routing, end diameters, and application before installation. Confirm that the 5/8 in. inside diameter and the listed vehicle fitment match the original hose being replaced on your Ford Focus or Ford Transit Connect. No heat shield or protective sleeve is included.
Dayco manufactures this hose to meet SAE J20R3 Class D-1 and SAE J1684 Type EC requirements for the specified coolant hose application.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2013 | Ford | Transit Connect | — | — | N/A | Small I.D. Heater Hose |
| 2012 | Ford | Transit Connect | 2.0L | L4 | N/A | Small I.D. Heater Hose |
| 2011 | Ford | Focus | 2.0L | L4 | N/A | Small I.D. Heater Hose |
| 2011 | Ford | Transit Connect | 2.0L | L4 | N/A | Small I.D. Heater Hose |
| 2010 | Ford | Focus | 2.0L | L4 | N/A | Small I.D. Heater Hose |
| 2010 | Ford | Transit Connect | — | — | N/A | Small I.D. Heater Hose |
| 2009 | Ford | Focus | 2.0L | L4 | N/A | Small I.D. Heater Hose |
| 2008 | Ford | Focus | 2.0L | L4 | N/A | Small I.D. Heater Hose |
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