2004 Freightliner MT45 Engine Cooling Hoses

Keep Your 2004 Freightliner MT45 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 2004 Freightliner MT45 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 2004 Freightliner MT45 Engine Cooling Hose at Advance Auto Parts is around $22.71, with a range that starts at $1.79 and goes up to $42.99. With 5 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter, Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2" Diameter, and Molded Coolant Hose start at just $22.79 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 Belt Tensioners and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 2004 Freightliner MT45 in peak condition, inside and out.

Essential 2004 Freightliner MT45 Engine Cooling Hoses

Dayco – Straight Radiator Hoses; Silicone, HD, 1 3/4 Inch Inner Dia. (Sold by foot) (Part No.78175GL)

Straight Radiator Hoses; Silicone, HD, 1 3/4 Inch Inner Dia. (Sold by foot)

from

$4.29
Made with special silicone compounds and reinforced with a ply of braided polyester yarn, the Dayco straight radiator hose H.D. – silicone sustains up to six times longer service life than an ordinary coolant hose when installed with a Dayco lined hose clamp. It has a temperature rating of -40 Deg. F (-40 Deg. C) to +350 Deg. F (+175 Deg. C) and is designed for a range of H.D. trucking applications where routing is relatively straight.

Product Features:
  • Capable of withstanding extreme temperatures and high-pressure environments
  • Meets stringent OE specifications
  • Designed to meet SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • PLEASE NOTE: Item is sold and priced by the foot. See store for details.
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Dayco – Straight Radiator Hoses; EPDM Rubber, HD, 2 1/2 Inch Inner Dia. (Sold by inch) (Part No.77250GL)

Straight Radiator Hoses; EPDM Rubber, HD, 2 1/2 Inch Inner Dia. (Sold by inch)

from

$2.49
Designed for a wide range of heavy-duty truck applications where the routing is relatively straight, the Dayco straight radiator hose – H.D. is made with the highest quality woven mesh fabric reinforcement, neoprene cover and nitrile tube compounds to withstand the most corrosive elements in diesel engines. Providing protection from oil, coolants, coolant additives and heat, it has a temperature rating of -40?F (-40?C) to +212?F (+100?C).

Product Features:
  • Capable of withstanding extreme temperatures and high-pressure environments
  • Designed to meet SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • Not suitable for fuel or oil transfer
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 6.75" Long, 2" Diameter (Part No.B70577)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 6.75" Long, 2" Diameter

from

$14.79
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 – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2" Diameter (Part No.B70212)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2" 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
See More

Dayco – Straight Radiator Hose, Standard (Sold by inch) (Part No.76175)

Straight Radiator Hose, Standard (Sold by inch)

from

$1.29
Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco’s Straight Radiator Hose features knitted einforcement and synthetic EPDM rubber construction. It meets SAE J20R4, Class D-2 requirements and provides high strength and resistance to ozone and other detrimental environmental elements, coolants, and temperature variations from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Meets SAE J20R4, Class D-2 requirements
  • Features a high strength knitted reinforcement and synthetic EPDM rubber construction
  • Resistant to standard coolants, ozone and other detrimental environmental elements
  • Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter (Part No.E70739)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter

from

$42.99
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

Gates – Molded Coolant Hose (Part No.20206)

Molded Coolant Hose

from

$26.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Heat and ozone resistant cover.
  • Engineered to resist electrochemical degradation – the leading cause of hose failure.
  • Re-engineered materials resist vacuum collapse. This reduces the need for internal springs in many applications.
  • Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications.
  • Temperature Rating: -40° F to 275° F (-40° C to 135° C) in coolant hose applications.
  • Note: Gates recommends replacing standard worm drive and spring loaded clamps with Gates PowerGrip(R) SB Clamps each time a new coolant hose is installed.
See More

Dayco – Straight Radiator Hoses; EPDM Rubber, HD, 3 Inch Inner Dia. (Sold by foot) (Part No.77300GL)

Straight Radiator Hoses; EPDM Rubber, HD, 3 Inch Inner Dia. (Sold by foot)

from

$2.99
Designed for a wide range of heavy-duty truck applications where the routing is relatively straight, the Dayco straight radiator hose – H.D. is made with the highest quality woven mesh fabric reinforcement, neoprene cover and nitrile tube compounds to withstand the most corrosive elements in diesel engines. Providing protection from oil, coolants, coolant additives and heat, it has a temperature rating of -40?F (-40?C) to +212?F (+100?C).

Product Features:
  • Capable of withstanding extreme temperatures and high-pressure environments
  • Designed to meet SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • Not suitable for fuel or oil transfer
  • PLEASE NOTE: Item is sold and priced by the foot. See store for details.
See More

Dayco – Straight Coolant Hose, Heavy-Duty 2-Ply, 2" (Sold by inch) (Part No.77200GL)

Straight Coolant Hose, Heavy-Duty 2-Ply, 2" (Sold by inch)

from

$1.79
Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco Heavy Duty Straight Radiator Hose is made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds to withstand the most corrosive elements in diesel engines: oil, coolants, coolant additives, and temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C). This hose meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • Made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds
  • Withstands the most corrosive elements in diesel engines: oil, coolants, and coolant additives
  • Performs well in temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C)
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Dayco – Straight Radiator Hoses; EPDM Rubber, 2 1/4 Inch Inner Diameter (Sold by inch) (Part No.76225)

Straight Radiator Hoses; EPDM Rubber, 2 1/4 Inch Inner Diameter (Sold by inch)

from

$1.79
The Dayco Straight Radiator Hose is designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Meets SAE J20R4, Class D-2 requirements
  • Features a high strength knitted reinforcement and synthetic EPDM rubber construction
  • Resistant to standard coolants, ozone and other detrimental environmental elements
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Dayco – Straight Radiator Hose, Heavy Duty, Dayco GL (Part No.77225GL)

Straight Radiator Hose, Heavy Duty, Dayco GL

from

$2.49
Designed for a wide range of heavy-duty truck applications where the routing is relatively straight, the Dayco straight radiator hose – H.D. is made with the highest quality woven mesh fabric reinforcement, neoprene cover and nitrile tube compounds to withstand the most corrosive elements in diesel engines. Providing protection from oil, coolants, coolant additives and heat, it has a temperature rating of -40?F (-40?C) to +212?F (+100?C).

Product Features:
  • Capable of withstanding extreme temperatures and high-pressure environments
  • Designed to meet SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • Not suitable for fuel or oil transfer
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter (Part No.C70397)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter

from

$18.99
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

Most Popular Lower Radiator Hoses for 2004 Freightliner MT45s

Enhance your 2004 Freightliner MT45 with one of the 2 Lower Radiator Hoses we have in stock, starting at just $1.79.

Gates – Molded Heater Hose: EPDM, Direct Fit, 2" Inside Diameter (Part No.21571)

Molded Heater Hose: EPDM, Direct Fit, 2" Inside Diameter

from

$18.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Heat and ozone resistant cover.
  • Engineered to resist electrochemical degradation – the leading cause of hose failure.
  • Re-engineered materials resist vacuum collapse. This reduces the need for internal springs in many applications.
  • Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications.
  • Temperature Rating: -40° F to 275° F (-40° C to 135° C) in coolant hose applications.
  • Note: Gates recommends replacing standard worm drive and spring loaded clamps with Gates PowerGrip(R) SB Clamps each time a new coolant hose is installed.
See More

Dayco – Straight Coolant Hose, Heavy-Duty 2-Ply, 2" (Sold by inch) (Part No.77200GL)

Straight Coolant Hose, Heavy-Duty 2-Ply, 2" (Sold by inch)

from

$1.79
Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco Heavy Duty Straight Radiator Hose is made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds to withstand the most corrosive elements in diesel engines: oil, coolants, coolant additives, and temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C). This hose meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
  • Made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds
  • Withstands the most corrosive elements in diesel engines: oil, coolants, and coolant additives
  • Performs well in temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C)
  • PLEASE NOTE: Priced and sold by inch. See store for details.
See More

Best-Selling 2004 Freightliner MT45 Upper Radiator Hoses

Upgrade your MT45 with one of our 3 best-selling Upper Radiator Hoses.

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter (Part No.E70739)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter

from

$42.99
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 – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2" Diameter (Part No.B70212)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2" 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
See More

Gates – Molded Coolant Hose (Part No.20206)

Molded Coolant Hose

from

$26.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Heat and ozone resistant cover.
  • Engineered to resist electrochemical degradation – the leading cause of hose failure.
  • Re-engineered materials resist vacuum collapse. This reduces the need for internal springs in many applications.
  • Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications.
  • Temperature Rating: -40° F to 275° F (-40° C to 135° C) in coolant hose applications.
  • Note: Gates recommends replacing standard worm drive and spring loaded clamps with Gates PowerGrip(R) SB Clamps each time a new coolant hose is installed.
See More

FAQs for 2004 Freightliner MT45 Engine Cooling Hoses

What are the best-selling Engine Cooling Hoses for 2004 Freightliner MT45s?

Out of 5 Engine Cooling Hoses that fit 2004 Freightliner MT45s, the following parts are the top sellers:

What’s the price range for 2004 Freightliner MT45 Engine Cooling Hoses?

The prices of Engine Cooling Hoses for the 2004 Freightliner MT45 range from $1.79 up to $42.99 for the most premium parts.

What is the average price of an Engine Cooling Hoses Engine Cooling Hose for a 2004 Freightliner MT45?

The average price for Engine Cooling Hoses for the 2004 Freightliner MT45 is $22.71. 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 Freightliner MT45 model years?

Yes, we carry Engine Cooling Hoses for 24 model years of Freightliner MT45s between 1998 and 2024. The following model years are the most popular for Engine Cooling Hose purchases: 2011, 2010, 2009, 2007, 2006, 2005, 2003, 2002, and 2001.

What are the cheapest Engine Cooling Hoses for my 2004 Freightliner MT45?

Does Advance Auto Parts sell Engine Cooling Hoses for any other 2004 Freightliner models?

Yes. We stock Engine Cooling Hoses for 22 other popular 2004 Freightliner models. Some of the most popular are 2004 Century Class Engine Cooling Hoses, 2004 Columbia Engine Cooling Hoses, 2004 M2 106 Engine Cooling Hoses, 2004 Coronado Engine Cooling Hoses, and 2004 M2 112 Engine Cooling Hoses.

What types of Engine Cooling Hoses do you sell for my 2004 Freightliner MT45?

As of 4/10/25, these are some of the most in-demand types of Engine Cooling Hoses for a 2004 Freightliner MT45:

Can I get help with 2004 Freightliner MT45 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 Freightliner Engine Cooling Hoses and more.

What is your return policy for Freightliner MT45 Engine Cooling Hoses?

Advance Auto Parts keeps returns simple. For new Freightliner MT45 Engine Cooling Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.