1973 Mazda RX-3 Radiator Hoses

Keep Your 1973 Mazda RX-3 in Top Shape with a Quality Radiator Hose

When it comes to maintaining or upgrading your 1973 Mazda RX-3, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Radiator Hose for your RX-3. We currently carry a top Radiator Hose in stock that is built to last. Whether you’re replacing a damaged Radiator Hose or looking to upgrade, our selection for the 1973 Mazda RX-3 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Oil Cooler Hoses and Serpentine and V Belts to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1973 Mazda RX-3 running smoothly and looking great.

Essential 1973 Mazda RX-3 Radiator Hoses

Gates – Premium Molded Coolant Hose (Part No.20900)

Premium Molded Coolant Hose

from

$20.79
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 – Molded Heater Hose: EPDM, Direct Fit, 1.38" Inside Diameter (Part No.20776)

Molded Heater Hose: EPDM, Direct Fit, 1.38" Inside Diameter

from

$27.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically designed materials resist collapse under vacuum
  • Designed to resist electrochemical degradation, which is the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM Tube; synthetic fiber knit reinforcement; EPDM cover resistant to heat, ozone and chemical refrigerants
  • Meets the 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 clamps and connectors each time a new cooling hose is installed.
  • Warning: Do not use for fuel or oil transfer applications
See More

Most Popular Coolant Hose for 1973 Mazda RX-3s

Enhance your 1973 Mazda RX-3 with this popular Coolant Hose we have in stock, for $27.99.

Gates – Molded Heater Hose: EPDM, Direct Fit, 1.38" Inside Diameter (Part No.20776)

Molded Heater Hose: EPDM, Direct Fit, 1.38" Inside Diameter

from

$27.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically designed materials resist collapse under vacuum
  • Designed to resist electrochemical degradation, which is the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM Tube; synthetic fiber knit reinforcement; EPDM cover resistant to heat, ozone and chemical refrigerants
  • Meets the 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 clamps and connectors each time a new cooling hose is installed.
  • Warning: Do not use for fuel or oil transfer applications
See More

FAQs for 1973 Mazda RX-3 Radiator Hoses

What’s the price range for 1973 Mazda RX-3 Radiator Hoses?

We currently have just one Radiator Hoses for the 1973 Mazda RX-3 in stock: Molded Heater Hose: EPDM, Direct Fit, 1.38" Inside Diameter and it costs $27.99.

Does Advance Auto Parts sell Radiator Hoses for other Mazda RX-3 model years?

Yes, we carry Radiator Hoses for 4 model years of Mazda RX-3s between 1972 and 1978. The following model years are the most popular for Radiator Hose purchases: 1977, 1976, 1974, 1972, and 1978.

Does Advance Auto Parts sell Radiator Hoses for any other 1973 Mazda models?

Yes. We stock Radiator Hoses for 2 other popular 1973 Mazda models. Some of the most popular are 1973 808 Radiator Hoses, 1973 RX-2 Radiator Hoses, and 1973 B1600 Radiator Hoses.

What types of Radiator Hoses do you sell for my 1973 Mazda RX-3?

We currently have just 1 Radiator Hose in stock for a 1973 Mazda RX-3, and as of 11/2/25, it is a Coolant Hose.

Can I get help with 1973 Mazda RX-3 Radiator Hose orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mazda Radiator Hoses and more.

What is your return policy for Mazda RX-3 Radiator Hoses?

Advance Auto Parts keeps returns simple. For new Mazda RX-3 Radiator Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.