2003 Mazda 6 Coolant Hoses

Your 2003 Mazda 6 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Coolant Hoses you desperately need.

We currently carry 11 Coolant Hoses to choose from for your 2003 Mazda 6, and our inventory prices range from as little as $10.79 up to $43.49.

On top of low prices, Advance Auto Parts offers 3 different trusted brands of Coolant Hoses for the 2003 Mazda 6. We only sell parts from trusted brands like Dayco so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 2 reviews on our Coolant Hoses for the 2003 Mazda 6 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Coolant Hoses stock in-person!

Coolant Hoses for Your 2003 Mazda 6

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11.5" Long, 1.28" Diameter (Part No.D72315)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11.5" Long, 1.28" Diameter

from

$22.79
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, 1.41" Diameter (Part No.B71728)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, 1.41" Diameter

from

$10.79
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
See More

Dayco – Cooling Hose (Part No.G2021372881DAY)

Cooling Hose

from

$13.51
Molded Coolant Hose Designed to replace original equipment manufacturer hose, Dayco Molded Cooling Hose with knitted reinforcement and all EPDM construction provides the high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations of -40F (-40C) to +257F (+125C) that are required for OEM hose replacements. The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose. In addition to meeting SAE J20R4, Class D-1 requirements, this hose is now designed to meet Type EC electro- chemical requirements as specified in SAE J1684.

Product Features:
  • All cooling-water hose inner linings are resistant to electrochemical cracking
  • high strength and resistance to oil, mud, salt, road debris, and ozone
  • Resistance to distilled water and water ethylene glycol mixtures
  • Resistance to air temperatures of up to 125C
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Gates – Premium Molded Coolant Hose (Part No.22834)

Premium Molded Coolant Hose

from

$43.49
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM tube: synthetic fiber knit reinforcement: heat-, ozone- and chemical coolant-resistant EPDM cover
  • Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
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Gates – Premium Molded Coolant Hose (Part No.22837)

Premium Molded Coolant Hose

from

$37.49
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM tube: synthetic fiber knit reinforcement: heat-, ozone- and chemical coolant-resistant EPDM cover
  • Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
See More

MacKay – MacKay Radiator Hose (Part No.G2000152323MKY)

MacKay Radiator Hose

from

$24.51
MacKay utilizes leading edge rubber technology and compounds, supported by in-house processes from rubber mixing to final product. This ensures hoses are made to the strict specifications required for the advanced motor vehicles of the 21st century. In vehicles of today, a hose has to be designed to withstand the stresses of modern, more compact but powerful engines that run hotter and at a higher pressure. Other factors include smaller engine compartments with poor heat dissipation, aggressive coolant additives, and stray (electrochemical) current that may be conducting through the cooling system. In short, the smaller but more powerful engines of today work a lot harder than the larger engines that were standard before. More heat is generated, higher burst pressures are required in cooling system components, and hoses have to be made tougher to withstand these demands. MacKay’s research and development chemists have developed new rubber formulations and manufacturing processes that ensure MacKay hoses meet the greater wear and heat demands created by modern engines. Rubber compounds used in automotive hoses today are predominantly synthetic rubber formulation. All MacKay coolant hoses are made from EPDM compounds that are highly resistant to ozone attack. Hoses made from some other rubber compounds may be subject to ozone deterioration.

Product Features:
  • Excellent resistance to high temperatures
  • Resists chemical attack (oils, fuels etc.)
  • Excellent Ozone resistance
  • Good resistance to abrasion
  • High resistance to vibration
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Dayco – Dayco, Bypass Hose, Trim-to-Fit (Part No.G20201220430DAY)

Dayco, Bypass Hose, Trim-to-Fit

from

$20.19
Dayco, Bypass Hose, Trim-to-Fit

Dayco – Radiator Hose (Part No.G2000152325DAY)

Radiator Hose

from

$16.82
Radiator Hose

Dayco – Radiator Hose (Part No.G2000152323DAY)

Radiator Hose

from

$16.32
Radiator Hose

MacKay – Cooling Hose (Part No.G2021282192MKY)

Cooling Hose

from

$14.06
Mackay utilizes leading edge rubber technology and compounds, supported by in-house processes from rubber mixing to final product. This ensures hoses are made to the strict specifications required for the advanced motor vehicles of the 21st century. In vehicles of today, a hose has to be designed to withstand the stresses of modern, more compact but powerful engines that run hotter and at a higher pressure. Other factors include smaller engine compartments with poor heat dissipation, aggressive coolant additives, and stray (electrochemical) current that may be conducting through the cooling system. In short, the smaller but more powerful engines of today work a lot harder than the larger engines that were standard before. More heat is generated, higher burst pressures are required in cooling system components, and hoses have to be made tougher to withstand these demands. Mackay’s research and development chemists have developed new rubber formulations and manufacturing processes that ensure Mackay hoses meet the greater wear and heat demands created by modern engines. Rubber compounds used in automotive hoses today are predominantly synthetic rubber formulation. All Mackay coolant hoses are made from EPDM compounds that are highly resistant to ozone attack. Hoses made from some other rubber compounds may be subject to ozone deterioration.

Product Features:
  • Excellent resistance to high temperatures
  • Resists chemical attack (oils, fuels etc.)
  • Excellent Ozone resistance
  • Good resistance to abrasion
  • High resistance to vibration
See More

Dayco – Cooling Hose (Part No.G2021372882DAY)

Cooling Hose

from

$13.80
Molded Coolant Hose Designed to replace original equipment manufacturer hose, Dayco Molded Cooling Hose with knitted reinforcement and all EPDM construction provides the high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations of -40F (-40C) to +257F (+125C) that are required for OEM hose replacements. The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose. In addition to meeting SAE J20R4, Class D-1 requirements, this hose is now designed to meet Type EC electro- chemical requirements as specified in SAE J1684.

Product Features:
  • All cooling-water hose inner linings are resistant to electrochemical cracking
  • high strength and resistance to oil, mud, salt, road debris, and ozone
  • Resistance to distilled water and water ethylene glycol mixtures
  • Resistance to air temperatures of up to 125C
See More