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Dayco 71934 Radiator Coolant Hose - Upper
| Brand | Dayco 71934 |
|---|---|
| Position | Upper |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 2 |
| End 2 Inside Diameter | 2 1/4 |
| 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 | 18 |
| Fits | — |
Curved hose design. Helps route coolant smoothly with a cleaner, more flexible fit.
EPDM construction. Resists heat and coolant exposure for dependable service.
Dual I.D. hose. Features two inside diameters for a precise connection.
Cross-references ACDelco 26216X, CARQUEST 21993 and Duralast E71934 for the same application. See all 9.
Dayco 71934 Curved Radiator Hose
Dayco 71934 is a curved radiator coolant hose built for cooling system service where a dual inside diameter is required. Made from EPDM rubber in black, it follows the routing needed for a secure coolant connection while meeting SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.
This Dayco Curved Radiator Hose line is engineered for replacement applications that need consistent hose shape and coolant flow. If you are servicing a Freightliner cooling system or sourcing a radiator hose for a vehicle that uses a 2 in. to 2 1/4 in. dual I.D. hose, part number 71934 is a direct match to the listed specifications.
Key Features
- EPDM construction for coolant hose service
- Black finish for OE-style appearance
- Dual I.D. hose design with 2 in. end 1 and 2 1/4 in. end 2
- Curved radiator hose profile for formed routing
- Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards
- No heat shield and no protective sleeve
Product Details
Dayco 71934 is a radiator coolant hose designed around its molded curved shape and dual inside diameters. The EPDM rubber construction is suited for engine cooling system use, while the 18 in. trunk height helps define the hose’s formed profile. This part number 71934 is a practical choice when replacing a worn or leaking hose in a cooling circuit that requires a 2 in. connection on one end and a 2 1/4 in. connection on the other.
For buyers searching by vehicle keywords, this hose is associated with Freightliner cooling system applications and is also cross-referenced to ACDelco 26216X and Gates 21993 for the same application. When comparing radiator hose replacement options, Dayco 71934 provides the dimensional and material details needed for an accurate match.
Common Problems This Hose Can Address
- Coolant leaks from cracked or aged radiator hose rubber
- Softening, swelling, or collapse in an original hose
- Improper fit from a hose with the wrong inside diameter
- Routing issues caused by a hose that no longer holds its formed curve
- Cooling system service needs on Freightliner and other listed applications
Installation Notes and Tips
Verify the hose routing, end diameters, and formed shape before installation. Inspect hose clamps, necks, and adjoining cooling system components for wear or corrosion, and replace any damaged mating surfaces before installing the new hose. Confirm that the hose seats fully on both connections and that the cooling system is properly refilled and bled after service.
Quality Assurance
Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and dimensional standards for radiator coolant hose replacement.
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