1991 Mack CS300P Mid-Liner Engine Cooling Hoses

Keep Your 1991 Mack CS300P Mid-Liner 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 1991 Mack CS300P Mid-Liner looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Upper Radiator Hoses and Lower 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 1991 Mack CS300P Mid-Liner Engine Cooling Hose at Advance Auto Parts is around $44.99, with a range that starts at $27.99 and goes up to $55.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Flex Radiator Hoses; Neoprene, Heavy Duty, 2 Inch Long, 2 Inch Inner Diameter, Green Stripe Heavy-Duty Vulco-Flex Coolant Hose, and Premium Molded Coolant Hose start at just $27.99 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 Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 1991 Mack CS300P Mid-Liner in peak condition, inside and out.

Essential 1991 Mack CS300P Mid-Liner Engine Cooling Hoses

Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26511)

Green Stripe Heavy-Duty Vulco-Flex Coolant Hose

from

$50.99
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.

Product Features:
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Built-in coiled steel wire enables medium-sized bends without bending or bending
  • EPDM tubing and neoprene lid for extended life
  • The polyester fabric reinforcement takes the form of vulcanization without unnecessary stress on the connections.
  • Heat, oil, and ozone resistant
  • Performs to SAE 20R5 Type EC Class D-2 specifications
  • Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Caution: Do not use for fuel or oil transfer applications
  • Caution: Do not use for fuel or oil transfer applications.
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Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 2 Inch Long, 2 Inch Inner Diameter (Part No.82101GL)

Flex Radiator Hoses; Neoprene, Heavy Duty, 2 Inch Long, 2 Inch Inner Diameter

from

$55.99
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 -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). 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:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
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Gates – Premium Molded Coolant Hose (Part No.21379)

Premium Molded Coolant Hose

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 withstand 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 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
  • Note: Gates recommends replacing clamps and connectors each time a new radiator hose is installed.
  • Caution: Do not use for fuel or oil transportation applications.
See More

Most Popular Upper Radiator Hose for 1991 Mack CS300P Mid-Liners

Enhance your 1991 Mack CS300P Mid-Liner with this popular Upper Radiator Hose we have in stock, for $27.99.

Gates – Premium Molded Coolant Hose (Part No.21379)

Premium Molded Coolant Hose

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 withstand 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 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
  • Note: Gates recommends replacing clamps and connectors each time a new radiator hose is installed.
  • Caution: Do not use for fuel or oil transportation applications.
See More

Best-Selling 1991 Mack CS300P Mid-Liner Lower Radiator Hoses

Upgrade your CS300P Mid-Liner with one of our 2 best-selling Lower Radiator Hoses.

Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 2 Inch Long, 2 Inch Inner Diameter (Part No.82101GL)

Flex Radiator Hoses; Neoprene, Heavy Duty, 2 Inch Long, 2 Inch Inner Diameter

from

$55.99
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 -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). 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:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
See More

Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26511)

Green Stripe Heavy-Duty Vulco-Flex Coolant Hose

from

$50.99
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.

Product Features:
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Built-in coiled steel wire enables medium-sized bends without bending or bending
  • EPDM tubing and neoprene lid for extended life
  • The polyester fabric reinforcement takes the form of vulcanization without unnecessary stress on the connections.
  • Heat, oil, and ozone resistant
  • Performs to SAE 20R5 Type EC Class D-2 specifications
  • Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Caution: Do not use for fuel or oil transfer applications
  • Caution: Do not use for fuel or oil transfer applications.
See More

FAQs for 1991 Mack CS300P Mid-Liner Engine Cooling Hoses

What are the best-selling Engine Cooling Hoses for 1991 Mack CS300P Mid-Liners?

Out of 3 Engine Cooling Hoses that fit 1991 Mack CS300P Mid-Liners, the following parts are the top sellers:

What’s the price range for 1991 Mack CS300P Mid-Liner Engine Cooling Hoses?

The prices of Engine Cooling Hoses for the 1991 Mack CS300P Mid-Liner range from $27.99 up to $55.99 for the most premium parts.

What is the average price of an Engine Cooling Hose for a 1991 Mack CS300P Mid-Liner?

The average price for Engine Cooling Hoses for the 1991 Mack CS300P Mid-Liner is $44.99. 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 Mack CS300P Mid-Liner model years?

Yes, we carry Engine Cooling Hoses for 4 model years of Mack CS300P Mid-Liners between 1986 and 1990. The following model years are the most popular for Engine Cooling Hose purchases: 1990, 1989, 1988, 1987, and 1986.

What are the cheapest Engine Cooling Hoses for my 1991 Mack CS300P Mid-Liner?

The cheapest 1991 Mack CS300P Mid-Liner Engine Cooling Hoses we carry are:

Does Advance Auto Parts sell Engine Cooling Hoses for any other 1991 Mack models?

What types of Engine Cooling Hoses do you sell for my 1991 Mack CS300P Mid-Liner?

As of 11/2/25, these are some of the most in-demand types of Engine Cooling Hoses for a 1991 Mack CS300P Mid-Liner:

Can I get help with 1991 Mack CS300P Mid-Liner 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 Mack Engine Cooling Hoses and more.

What is your return policy for Mack CS300P Mid-Liner Engine Cooling Hoses?

Advance Auto Parts keeps returns simple. For new Mack CS300P Mid-Liner Engine Cooling Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.