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Dayco 71531 Radiator Coolant Hose - Upper
| Brand | Dayco 71531 |
|---|---|
| Position | Upper |
| Color | Black |
| Contains Protective Sleeve | Y |
| End 1 Inside Diameter | 1 1/4 |
| End 2 Inside Diameter | 1 7/16 |
| Hose Type | Dual I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 14 1/2 |
| Product line | Curved Radiator Hose |
| Fits | Ford and Mazda · 30 vehicles |
Curved radiator hose. Dual I.D. design helps match cooling-system routing.
EPDM construction. Resists heat and coolant exposure for dependable service.
Protective sleeve included. Adds extra abrasion protection where the hose runs.
Cross-references ACDelco 22255M, ACDelco 24468L and Atlas MC212 for the same application. See all 25.
Dayco Curved Radiator Hose 71531
Dayco 71531 is a curved radiator coolant hose built for upper cooling-system routing on select Ford and Mazda applications. Made from EPDM with a black finish and a protective sleeve, it is shaped to match the factory hose path and support reliable coolant transfer in the engine bay.
Key Features
- EPDM construction for coolant-hose service
- Curved radiator hose design for upper hose routing
- Dual I.D. hose with 1 1/4 in. end 1 inside diameter and 1 7/16 in. end 2 inside diameter
- Protective sleeve included; heat shield not included
- Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Black finish for a factory-style appearance
Product Details
This Dayco Curved Radiator Hose line is engineered for cooling-system service where a formed upper hose is required. Part number 71531 uses EPDM rubber for durability in hot coolant environments and follows SAE specifications for radiator hose performance. The dual inside diameter design and curved trunk height help it route correctly in applications such as Ford Aerostar, Ford Explorer, Ford Ranger, Mazda B4000, and Mazda Navajo.
This part cross-references Motorcraft KM1824 and Gates 21897 for the same application.
What It Helps Address
- Upper radiator hose leaks
- Cracked or hardened coolant hose material
- Collapsed or misshaped hose routing
- Coolant loss from aging factory hose assemblies
- Improper fit from a non-formed replacement hose
Installation Notes
Verify hose routing, end diameters, and clearance before installation. This hose is listed for upper radiator hose positions on 1990-1995 Ford Aerostar, 1991-1994 Ford Explorer, 1990-1994 Ford Ranger, 1994 Mazda B4000, and 1991-1994 Mazda Navajo. Fitment also includes 1991-1993 Ford Explorer, 1991-1993 Ford Ranger, and 1991-1993 Mazda Navajo without A.C. and without Extra Cool, plus 1990 Ford Ranger without air conditioning. Confirm the vehicle’s cooling-system configuration before replacement.
Quality Assurance
Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and dimensional standards for radiator hose service.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1995 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1994 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1994 | Ford | Explorer | Automatic | — | — | Upper | Curved Radiator Hose |
| 1994 | Ford | Ranger | Automatic | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1994 | Mazda | B4000 | Automatic | — | — | Upper | Curved Radiator Hose |
| 1994 | Mazda | Navajo | Automatic | — | — | Upper | Curved Radiator Hose |
| 1993 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1993 | Ford | Explorer | Automatic | — | — | Upper | Curved Radiator Hose |
| 1993 | Ford | Explorer | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1993 | Ford | Ranger | Automatic | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1993 | Ford | Ranger | Manual | 4.0L | V6 | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1993 | Mazda | Navajo | Automatic | — | — | Upper | Curved Radiator Hose |
| 1993 | Mazda | Navajo | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1992 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1992 | Ford | Explorer | Automatic | — | — | Upper | Curved Radiator Hose |
| 1992 | Ford | Explorer | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1992 | Ford | Ranger | Automatic | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1992 | Ford | Ranger | Manual | 4.0L | V6 | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1992 | Mazda | Navajo | Automatic | — | — | Upper | Curved Radiator Hose |
| 1992 | Mazda | Navajo | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1991 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1991 | Ford | Explorer | Automatic | — | — | Upper | Curved Radiator Hose |
| 1991 | Ford | Explorer | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1991 | Ford | Ranger | Automatic | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1991 | Ford | Ranger | Manual | 4.0L | V6 | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1991 | Mazda | Navajo | Automatic | — | — | Upper | Curved Radiator Hose |
| 1991 | Mazda | Navajo | Manual | — | — | Upper | w/o A.C., w/o Extra Cool; Curved Radiator Hose |
| 1990 | Ford | Aerostar | — | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1990 | Ford | Ranger | Automatic | 4.0L | V6 | Upper | Curved Radiator Hose |
| 1990 | Ford | Ranger | Manual | 4.0L | V6 | Upper | Fits vehicles without air conditioning.; Curved Radiator Hose |
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