2003 Freightliner Classic Heater Hoses

Keep Your 2003 Freightliner Classic in Top Shape with a Quality Heater Hose

When it comes to maintaining or upgrading your 2003 Freightliner Classic, 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 Heater Hose for your Classic. We currently carry a top Heater Hose in stock that is built to last. Whether you’re replacing a damaged Heater Hose or looking to upgrade, our selection for the 2003 Freightliner Classic 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 Freightliner Classic running smoothly and looking great.

Essential 2003 Freightliner Classic Heater Hoses

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.
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Dayco – Straight Heater Hose; EPDM Rubber, 3/4 Inch Diameter (sold by foot) (Part No.80273)

Straight Heater Hose; EPDM Rubber, 3/4 Inch Diameter (sold by foot)

from

$1.29
Specifically designed to carry the heated coolant from the engine block to the heater core under the dashboard and return it to the engine, this Dayco Standard Heater Hose is constructed using all EPDM compounds and spiral reinforcement for high burst strength and excellent heat resistance. Made for general service on light trucks and passenger cars, this hose is similar to SAE 20R3, Class D-2 and has a temperature rating of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). This Dayco Standard Heater Hose is compatible with all common coolant and coolant additives. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Specifically designed to be compatible with all common coolants and coolant additives
  • Constructed using all EPDM compounds and spiral reinforcements
  • Similar to SAE 20R3, Class D-2
  • Has a high burst strength and excellent heat resistance 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.
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Most Popular Heater Hose for 2003 Freightliner Classics

Enhance your 2003 Freightliner Classic with this popular Heater Hose we have in stock, for $2.99.

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

FAQs for 2003 Freightliner Classic Heater Hoses

What’s the price range for 2003 Freightliner Classic Heater Hoses?

We currently have just one Heater Hoses for the 2003 Freightliner Classic in stock: Straight Radiator Hoses; EPDM Rubber, HD, 3 Inch Inner Dia. (sold by foot) and it costs $2.99.

Does Advance Auto Parts sell Heater Hoses for other Freightliner Classic model years?

Yes, we carry Heater Hoses for 5 model years of Freightliner Classics between 2001 and 2007. The following model years are the most popular for Heater Hose purchases: 2004, 2007, 2001, 2002, 2005, and 2006.

Does Advance Auto Parts sell Heater Hoses for any other 2003 Freightliner models?

Yes. We stock Heater Hoses for 16 other popular 2003 Freightliner models. Some of the most popular are 2003 FL112 Heater Hoses, 2003 FLD132 Heater Hoses, 2003 M2 106 Heater Hoses, 2003 M2 100 Heater Hoses, and 2003 FLD120SD Heater Hoses.

What types of Heater Hoses do you sell for my 2003 Freightliner Classic?

We currently have just 1 Heater Hose in stock for a 2003 Freightliner Classic, and as of 11/2/25, it is a Heater Hose.

Can I get help with 2003 Freightliner Classic Heater Hose orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Freightliner Heater Hoses and more.

What is your return policy for Freightliner Classic Heater Hoses?

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