Peterbilt 378 Coolant Hoses
Your Peterbilt 378 will be happy to know that the search for the right Coolant Hoses you’ve been looking for is over! Advance Auto Parts has 3 different Coolant Hoses for your vehicle, ready for shipping or in-store pick up. The best part is, our Peterbilt 378 Coolant Hoses start from as little as $11.79.
When it comes to your Peterbilt 378, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Coolant Hoses brands so you can shop with complete confidence. Some of our top Coolant Hoses brands are Dayco. We’re sure you will get the right product to keep that 378 running for a long time.
We even have reviews of our OEM and aftermarket Coolant Hoses products to help you buy with confidence. Hear from other customers via the 20 reviews on parts for your Peterbilt 378.
Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Coolant Hoses for your 378, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!
Compare 20 Peterbilt Coolant Hoses
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 9" Long, 1.31" Diameter (Part No.B70704)
from
$11.79
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:
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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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 12.50" Long, 2.25" Diameter (Part No.C70920)
from
$21.49
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:
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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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 1" Diameter (Part No.B71501)
from
$29.99
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:
See More
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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 22.50" Long, 2.25" Diameter (Part No.E70921)
from
$53.99
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:
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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
Gates – Premium Molded Coolant Hose (Part No.21194)
from
$38.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
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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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 3.25" Long, 2" Diameter (Part No.B70605)
from
$9.99
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:
See More
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
Gates – Premium Molded Coolant Hose (Part No.21131)
from
$83.99
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
- 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
Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 24 Inch Long, 2.5 Inch Inner Dia. (Part No.82291GL)
from
$75.99
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:
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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
Gates – Green Stripe« Heavy-Duty Vulco-Flex« Coolant Hose (Part No.26524)
from
$64.99
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:
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Product Features:
- Engineered to resist electrochemical degradation, the leading cause of hose failure
- Built-in steel spiral wire allows for medium sized curves without kinking or collapsing
- EPDM tube and Neoprene cover for extended service life
- Polyester fabric-ply reinforcement vulcanizes into shape without unnecessary strain on connections
- Resistant to heat, oil and ozone
- 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.
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 18.50" Long, 2.50" Diameter (Part No.E71155)
from
$49.99
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:
See More
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
Gates – Green Stripe« Heavy-Duty Vulco-Flex« Coolant Hose (Part No.26523)
from
$47.99
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:
See More
Product Features:
- Engineered to resist electrochemical degradation, the leading cause of hose failure
- Built-in steel spiral wire allows for medium sized curves without kinking or collapsing
- EPDM tube and Neoprene cover for extended service life
- Polyester fabric-ply reinforcement vulcanizes into shape without unnecessary strain on connections
- Resistant to heat, oil and ozone
- 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.
Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 19 Inch Long, 2.25 Inch Inner Dia. (Part No.82201GL)
from
$46.49
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:
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
Gates – Premium Molded Coolant Hose (Part No.21042)
from
$42.99
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
- 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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 12" Long, 3" Diameter (Part No.D70870)
from
$40.49
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:
See More
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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11" Long, 2.25" Diameter (Part No.D70588)
from
$13.99
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:
See More
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
Dayco – Straight Radiator Hoses; Silicone, Heavy Duty, 3 Inch Inner Dia. (Sold by foot) (Part No.78300GL)
from
$6.79
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:
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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.
Dayco – Straight Radiator Hoses; Silicone, HD, 2 1/4 Inch Inner Dia. (Sold by inch) (Part No.78225GL)
from
$5.49
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:
See More
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 inch. See store for details.
Dayco – Straight Radiator Hoses; Silicone, HD, 1 3/4 Inch Inner Dia. (Sold by foot) (Part No.78175GL)
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:
See More
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.
Dayco – Straight Radiator Hoses; EPDM Rubber, HD, 3 1/4 Inch Inner Dia. (Sold by foot) (Part No.77325GL)
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:
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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.
Dayco – Straight Coolant Hose (Heavy-Duty 2-Ply) (Part No.77100GL)
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:
See More
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)
FAQs for Peterbilt 378 Coolant Hoses
What are the most popular Coolant Hoses for the Peterbilt 378?
With 1 brands you can trust, our most popular Coolant Hoses for the Peterbilt 378 are:
from
$11.79
(10)
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 9" Long, 1.31" Diameter
Coolant Hoses
from
$29.99
This product is not rated
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 1" Diameter
Coolant Hoses
from
$40.49
This product is not rated
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 12" Long, 3" Diameter
Coolant Hoses
Find Your Peterbilt 378 Coolant Hoses by Year
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