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Dayco 73034 Radiator Coolant Hose - Lower
| Brand | Dayco 73034 |
|---|---|
| Position | Lower |
| Material | Epdm |
| Color | Black |
| End 1 Inside Diameter | 1 3/16 |
| End 2 Inside Diameter | 1 1/4 |
| Contains Heat Shield | N |
| Contains Protective Sleeve | Y |
| End 1 Outside Diameter | 1 9/16 |
| End 2 Outside Diameter | 1 21/32 |
| Hose Type | Dual i.d. hose |
| SAE Specification | Sae j20r4 class d-1, sae j1684 type ec |
| Trunk Height | 13 1/2 |
| Product line | Curved Radiator Hose |
| Fits | Mazda · 4 vehicles |
Curved radiator hose. Dual I.D. design helps route coolant smoothly and efficiently.
EPDM construction. Resists heat and coolant exposure for dependable service.
Protective sleeve included. Adds extra abrasion resistance where the hose needs it most.
Curved Lower Radiator Hose for Mazda 5
Dayco 73034 is a curved radiator coolant hose built for the lower cooling circuit on select Mazda 5 models. It uses EPDM construction with a black finish and a protective sleeve to help manage underhood exposure in the radiator hose routing.
Compatible with 2012-2015 Mazda 5, lower, this Dayco Curved Radiator Hose is shaped for the application-specific bend needed in the cooling system. The dual I.D. hose design measures 1 3/16 in. at one end and 1 1/4 in. at the other, with outside diameters of 1 9/16 in. and 1 21/32 in. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.
Key Features
- Dayco Curved Radiator Hose line for application-specific cooling system routing
- Fits 2012-2015 Mazda 5, lower
- EPDM rubber construction for radiator coolant service
- Dual I.D. hose with 1 3/16 in. and 1 1/4 in. end diameters
- Protective sleeve included for added surface protection
- Black finish for a clean OE-style appearance
- Built to SAE J20R4 Class D-1 and SAE J1684 Type EC standards
Detailed Description
Dayco 73034 is a lower radiator coolant hose for the Mazda 5 that follows the curved routing required in the vehicle’s cooling system. The EPDM hose material is commonly used in coolant applications, while the dual I.D. design supports the different connection sizes found at each end of the hose path. If you are replacing a worn or leaking lower hose on a 2012, 2013, 2014, or 2015 Mazda 5, this part number 73034 provides the correct shape and connection sizing for the listed application.
The Dayco Curved Radiator Hose product line focuses on formed hose geometry for direct-fit cooling system service. Part number 73034 is a fitment-based replacement for the lower radiator hose on the Mazda 5, helping restore proper coolant flow through the engine cooling circuit.
Common Problems This Part Can Address
- Coolant leaks from a cracked or aged lower radiator hose
- Softening, swelling, or deterioration of the original EPDM hose
- Improper hose routing caused by a damaged formed hose
- Cooling system seepage at the hose connection points
- Loss of coolant circulation through the lower radiator line
Installation Notes and Tips
Verify the vehicle is a 2012-2015 Mazda 5 with lower hose placement before ordering. Match the hose orientation and end diameters to the original part, and inspect the mating necks, clamps, and nearby cooling components for wear before installation. Allow the engine to cool fully and drain coolant as needed before removing the existing hose.
Quality Assurance
This hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting standardized coolant hose performance for the listed application. Dayco part number 73034 is built for the specified Mazda 5 fitment and cooling-system service use.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2015 | Mazda | 5 | Lower | Curved Radiator Hose |
| 2014 | Mazda | 5 | Lower | Curved Radiator Hose |
| 2013 | Mazda | 5 | Lower | Curved Radiator Hose |
| 2012 | Mazda | 5 | Lower | Curved Radiator Hose |
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