2003 Peterbilt 378 Radiator Hoses
Keep Your 2003 Peterbilt 378 in Top Shape with a Quality Radiator Hose
When it comes to maintaining or upgrading your 2003 Peterbilt 378, 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 378. 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 2003 Peterbilt 378 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 Belt Tensioners and Pulleys to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2003 Peterbilt 378 running smoothly and looking great.
Find Your Specific 2003 Peterbilt 378 Radiator Hoses
Looking for the perfect Radiator Hose for your 2003 Peterbilt 378? You’re in the right place. Below, you’ll find a Radiator Hose from a trusted manufacturer that is a perfect fit for your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Radiator Hoses, ensuring durability and a precise fit for your Peterbilt 378. Whether you’re driving a 2003 model or another popular model year like
1995,
1996,
1997,
1998,
1999,
2004,
2005,
2006, and
2007, we’ve got you covered. Purchasing Radiator 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 Radiator Hoses that fit your vehicle.
Essential 2003 Peterbilt 378 Radiator Hoses
Dayco – Straight Heater Hose; EPDM Rubber, 1 Inch Diameter (sold by foot) (Part No.80319)
from
$4.99
This premium Dayco Insulone Heater Hose delivers heated coolant to the heater core with minimal heat loss. The synthetic EPDM rubber compounds and spiral reinforcement gives this hose excellent burst strength, heat resistance, and compatibility with all common coolants and coolant additives. A special compound used in the insulating layer provides an added measure of protection against heat loss. Built with a black cover, this hose is similar to SAE 20R3, Class D-2 with a temperature range of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). Note: NOT suitable for fuel or oil transfer.
Product Features:
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Product Features:
- Synthetic EPDM rubber compounds and spiral reinforcement provides excellent burst strength and heat resistance
- Compatible with all common coolants and coolant additives
- Insulating layer provides an added measure of protection against heat loss
- Performs well in temperature ranges of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
- PLEASE NOTE: Item is sold and priced by the foot. See store for details.
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter (Part No.C71813)
from
$25.99
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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 9" Long, 1.31" Diameter (Part No.B70704)
from
$30.99
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, 5" Long, 2" Diameter (Part No.B71569)
from
$9.49
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 – Straight Radiator Hoses; EPDM Rubber, 2 3/4 Inch Inner Diameter (sold by inch) (Part No.76275)
from
$2.49
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:
See More
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.
Dayco – Straight Radiator Hoses; EPDM Rubber, 1 1/2 Inch Inner Diameter (sold by inch) (Part No.76150)
from
$1.29
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:
See More
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.
Popular 2003 Peterbilt 378 Radiator Hoses Categories
Most Popular Coolant Hose for 2003 Peterbilt 378s
Enhance your 2003 Peterbilt 378 with this popular Coolant Hose we have in stock, for $4.99.
Dayco – Straight Heater Hose; EPDM Rubber, 1 Inch Diameter (sold by foot) (Part No.80319)
from
$4.99
This premium Dayco Insulone Heater Hose delivers heated coolant to the heater core with minimal heat loss. The synthetic EPDM rubber compounds and spiral reinforcement gives this hose excellent burst strength, heat resistance, and compatibility with all common coolants and coolant additives. A special compound used in the insulating layer provides an added measure of protection against heat loss. Built with a black cover, this hose is similar to SAE 20R3, Class D-2 with a temperature range of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). Note: NOT suitable for fuel or oil transfer.
Product Features:
See More
Product Features:
- Synthetic EPDM rubber compounds and spiral reinforcement provides excellent burst strength and heat resistance
- Compatible with all common coolants and coolant additives
- Insulating layer provides an added measure of protection against heat loss
- Performs well in temperature ranges of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
- PLEASE NOTE: Item is sold and priced by the foot. See store for details.
FAQs for 2003 Peterbilt 378 Radiator Hoses
What’s the price range for 2003 Peterbilt 378 Radiator Hoses?
We currently have just one Radiator Hoses for the 2003 Peterbilt 378 in stock: Straight Heater Hose; EPDM Rubber, 1 Inch Diameter (sold by foot) and it costs $4.99.
Does Advance Auto Parts sell Radiator Hoses for other Peterbilt 378 model years?
Does Advance Auto Parts sell Radiator Hoses for any other 2003 Peterbilt models?
Yes. We stock Radiator Hoses for 4 other popular 2003 Peterbilt models. Some of the most popular are 2003 379 Radiator Hoses, 2003 320 Radiator Hoses, 2003 387 Radiator Hoses, 2003 357 Radiator Hoses, and 2003 330 Radiator Hoses.
What types of Radiator Hoses do you sell for my 2003 Peterbilt 378?
We currently have just 1 Radiator Hose in stock for a 2003 Peterbilt 378, and as of 6/2/26, it is a Coolant Hose.
Can I get help with 2003 Peterbilt 378 Radiator Hose orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Peterbilt Radiator Hoses and more.
What is your return policy for Peterbilt 378 Radiator Hoses?
Advance Auto Parts keeps returns simple. For new Peterbilt 378 Radiator Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.