1978 Mazda RX-4 Engine Cooling Hoses
Keep Your 1978 Mazda RX-4 in Top Shape with Quality Engine Cooling Hoses
Whether you’re repairing or upgrading your Engine Cooling Hose, using high-quality parts is key to keeping your 1978 Mazda RX-4 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Lower Radiator Hoses and Upper Radiator Hoses. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1978 Mazda RX-4 Engine Cooling Hose at Advance Auto Parts is around $25.94, with a range that starts at $15.29 and goes up to $30.99. With 4 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia., Vulco-Flex II Flexible Coolant Hose, and Premium Molded Coolant Hose start at just $15.29 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Cooling Hose, don’t forget to check out other key components like Oil Cooler Hoses and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 1978 Mazda RX-4 in peak condition, inside and out.
Find Your Specific 1978 Mazda RX-4 Engine Cooling Hoses
Looking for the perfect Engine Cooling Hose for your 1978 Mazda RX-4? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Hoses that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Hoses, ensuring durability and a precise fit for your Mazda RX-4. Whether you’re driving a 1978 model or another popular model year like
1974,
1975,
1976, and
1977, we’ve got you covered. Purchasing Engine Cooling Hoses from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Hoses that fit your vehicle.
Essential 1978 Mazda RX-4 Engine Cooling Hoses
Dayco – Flex Radiator Hoses; EPDM Rubber, 13.88 Inch Long, 1.5 Inch Inner Dia. (Part No.81151)
from
$27.99
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.
Product Features:
See More
Product Features:
- Designed to meet OE specifications
- Not suitable for oil or heat transfer
- Meets SAE J20R4, Class D-2 requirements for improved service hoses
- This hose is designed to prevent splitting, ballooning, and elongation
Gates – Premium Molded Coolant Hose (Part No.20953)
from
$30.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
See More
Product Features:
- Specifically-engineered materials resist collapse under vacuum
- Designed to resist electrochemical degradation, which is the leading cause of hose failure
- Pre-formed for a good fit and to ensure perfectly sealed connections
- 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 hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
Dayco – Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia. (Part No.81121)
from
$15.29
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.
Product Features:
See More
Product Features:
- Designed to meet OE specifications
- Not suitable for oil or heat transfer
- Meets SAE J20R4, Class D-2 requirements for improved service hoses
- This hose is designed to prevent splitting, ballooning, and elongation
Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25476)
from
$29.49
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.
Product Features:
See More
Product Features:
- Improved sealing surface for greater leak resistance
- High flexibility for easy installation
- Maximum vehicle coverage with minimal inventory
- Heat, oil and ozone resistant
- Rated for SAE 20R5 Class D-2 performance
- Temperature Range: up to +257 Degrees F (+125 Degrees C)
- Note: Gates recommends replacing clamps and connectors each time a new cooling hose is installed.
- Caution: Do not use for fuel or oil transportation applications.
Popular 1978 Mazda RX-4 Engine Cooling Hoses Categories
Most Popular Lower Radiator Hose for 1978 Mazda RX-4s
Enhance your 1978 Mazda RX-4 with this popular Lower Radiator Hose we have in stock, for $29.49.
Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25476)
from
$29.49
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.
Product Features:
See More
Product Features:
- Improved sealing surface for greater leak resistance
- High flexibility for easy installation
- Maximum vehicle coverage with minimal inventory
- Heat, oil and ozone resistant
- Rated for SAE 20R5 Class D-2 performance
- Temperature Range: up to +257 Degrees F (+125 Degrees C)
- Note: Gates recommends replacing clamps and connectors each time a new cooling hose is installed.
- Caution: Do not use for fuel or oil transportation applications.
Best-Selling 1978 Mazda RX-4 Upper Radiator Hoses
Upgrade your RX-4 with one of our 3 best-selling Upper Radiator Hoses, earning an average 3.5 stars rating across 3 reviews.
Dayco – Flex Radiator Hoses; EPDM Rubber, 13.88 Inch Long, 1.5 Inch Inner Dia. (Part No.81151)
from
$27.99
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.
Product Features:
See More
Product Features:
- Designed to meet OE specifications
- Not suitable for oil or heat transfer
- Meets SAE J20R4, Class D-2 requirements for improved service hoses
- This hose is designed to prevent splitting, ballooning, and elongation
Dayco – Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia. (Part No.81121)
from
$15.29
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.
Product Features:
See More
Product Features:
- Designed to meet OE specifications
- Not suitable for oil or heat transfer
- Meets SAE J20R4, Class D-2 requirements for improved service hoses
- This hose is designed to prevent splitting, ballooning, and elongation
Gates – Premium Molded Coolant Hose (Part No.20953)
from
$30.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
See More
Product Features:
- Specifically-engineered materials resist collapse under vacuum
- Designed to resist electrochemical degradation, which is the leading cause of hose failure
- Pre-formed for a good fit and to ensure perfectly sealed connections
- 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 hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
FAQs for 1978 Mazda RX-4 Engine Cooling Hoses
What are the best-selling Engine Cooling Hoses for 1978 Mazda RX-4s?
Out of 4 Engine Cooling Hoses that fit 1978 Mazda RX-4s, the following parts are the top sellers:
- Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia. (5191017) – $15.29
- Vulco-Flex II Flexible Coolant Hose (10911534) – $29.49
- Premium Molded Coolant Hose (10511312) – $30.99
What’s the price range for 1978 Mazda RX-4 Engine Cooling Hoses?
The prices of Engine Cooling Hoses for the 1978 Mazda RX-4 range from $15.29 up to $30.99 for the most premium parts.
What is the average price of an Engine Cooling Hose for a 1978 Mazda RX-4?
The average price for Engine Cooling Hoses for the 1978 Mazda RX-4 is $25.94. Keep in mind the variety of part types within our Engine Cooling Hose category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Cooling Hoses for other Mazda RX-4 model years?
What are the cheapest Engine Cooling Hoses for my 1978 Mazda RX-4?
The cheapest 1978 Mazda RX-4 Engine Cooling Hoses we carry are:
- Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia. (5191017) – $15.29
- Flex Radiator Hoses; EPDM Rubber, 13.88 Inch Long, 1.5 Inch Inner Dia. (5191068) – $27.99
- Vulco-Flex II Flexible Coolant Hose (10911534) – $29.49
- Premium Molded Coolant Hose (10511312) – $30.99
Does Advance Auto Parts sell Engine Cooling Hoses for any other 1978 Mazda models?
Yes. We stock Engine Cooling Hoses for 3 other popular 1978 Mazda models. Some of the most popular are 1978 Cosmo Engine Cooling Hoses, 1978 B1800 Engine Cooling Hoses, 1978 GLC Engine Cooling Hoses, and 1978 RX-3 Engine Cooling Hoses.
What are the top-rated Engine Cooling Hoses that fit the 1978 Mazda RX-4?
The one 1978 Mazda RX-4 Engine Cooling Hose we have in stock is the Flex Radiator Hoses; EPDM Rubber, 9 Inch Long, 1.5 Inch Inner Dia.. It costs $15.29.
What types of Engine Cooling Hoses do you sell for my 1978 Mazda RX-4?
As of 11/2/25, these are some of the most in-demand types of Engine Cooling Hoses for a 1978 Mazda RX-4:
Can I get help with 1978 Mazda RX-4 Engine Cooling Hose orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mazda Engine Cooling Hoses and more.
What is your return policy for Mazda RX-4 Engine Cooling Hoses?
Advance Auto Parts keeps returns simple. For new Mazda RX-4 Engine Cooling Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.