2004 Chevrolet Trailblazer Ext Heater Hoses
Keep Your 2004 Chevrolet Trailblazer Ext in Top Shape with Quality Heater Hoses
Whether you’re repairing or upgrading your Heater Hose, using high-quality parts is key to keeping your 2004 Chevrolet Trailblazer Ext looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Heater Hose Fittings and Heater 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.
Top-Rated Heater Hoses from Trusted Brands
Looking for a reliable Heater Hose? We’ve got you covered with options from brands you know and trust like Dayco and Dorman. For example, Dayco Heater Hoses start at just $26.99 with an average 4.5 star rating. Dorman offer similar pricing and quality, backed by strong customer feedback. With over 336 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet Trailblazer Ext owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2004 Chevrolet Trailblazer Ext Heater Hose at Advance Auto Parts is around $24.98, with a range that starts at $1.99 and goes up to $59.99. With 18 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Heater Hose Connector, Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot), and Quick-Lok Heater Hose Connector start at just $1.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Heater Hose, don’t forget to check out other key components like Belt Tensioners and Pulleys. At Advance Auto Parts, we’re here to help you keep your 2004 Chevrolet Trailblazer Ext in peak condition, inside and out.
Find Your Specific 2004 Chevrolet Trailblazer Ext Heater Hoses
Looking for the perfect Heater Hose for your 2004 Chevrolet Trailblazer Ext? You’re in the right place. Below, you’ll find links to various types of Heater Hoses that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Heater Hoses, ensuring durability and a precise fit for your Chevrolet Trailblazer Ext. Whether you’re driving a 2004 model or another popular model year like
2002,
2003,
2005, and
2006, we’ve got you covered. Purchasing Heater 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 Heater Hoses that fit your vehicle.
Essential 2004 Chevrolet Trailblazer Ext Heater Hoses
Dayco – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 12 Inch Length (Part No.80412)
from
$31.99
Providing reliable service in applications requiring molded hoses, the Dayco heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- Meets Type EC electro-chemical requirements as specified in SAE J1684
Gates – Molded 90 Degree Heater Hose (Part No.28469)
from
$18.99
Specially designed for difficult heater hose applications requiring sharp 90 degree bends in the hose. Eliminates the need for extensive inventory of OE type curved heater hose. Just 22 sizes handle thousands of applications.
Product Features:
See More
Product Features:
- Resists electrochemical degradation and water permeation
- Use with heater hose connectors and bulk heater hose to create custom assemblies
- Compatible for coolant, air and water applications
- EPDM tube and cover, synthetic fiber reinforcement
- SAE 20R3 EC Class D1, SAE 20R4 EC Class D1
- Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
- Caution: Do not use for fuel or oil transfer applications
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 9 Inch Length (Part No.87864)
from
$29.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Gates – Safety Stripe Standard Straight Heater Hose (Sold by foot) (Part No.28407)
from
$0.99
Premium hose constructed for long service life.
Product Features:
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Product Features:
- Good resistance to high temperatures for extended periods of time, which prolongs service life
- Meets SAE 20R3 Standard Wall Class D-2 requirements
- 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
- PLEASE NOTE: Item is priced and sold by the foot. See store for details.
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 21 1/4 Inch Length (Part No.87792)
from
$37.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Gates – Premium Molded Heater Hose (Part No.18856)
from
$51.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
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Product Features:
- Has all the quality features of Gates molded coolant hose and similar to OEM specifications
- Engineered to resist electrochemical degradation ┐ the leading cause of hose failure
- EPDM tube, synthetic fiber knit reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature Range: -40 Deg. F to 275 Deg. F (-40 Deg. C -135 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 – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 9 Inch Length (Part No.87909)
from
$60.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Gates – Premium Molded Heater Hose (Part No.18952)
from
$44.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
See More
Product Features:
- Has all the quality features of Gates molded coolant hose and similar to OEM specifications
- Engineered to resist electrochemical degradation – the leading cause of hose failure
- EPDM tube, synthetic fiber knit reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature range: -40 Deg. F to +275 Deg. F (-40 Deg. F (+135 Deg. 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.
Gates – Premium Molded Heater Hose (Part No.18846)
from
$29.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
See More
Product Features:
- Has all the quality features of Gates molded cooling hose and is similar to OEM specifications.
- Engineered to resist electrochemical degradation – the leading cause of hose failure
- EPDM tube, synthetic fiber reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature range -40 degrees F to +275 degrees F (-40 degrees C -135 degrees C)
- Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter (Part No.A71877)
from
$26.99
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 – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 6 Inch Length (Part No.80411)
from
$7.99
Providing reliable service in applications requiring molded hoses, the Dayco heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- Meets Type EC electro-chemical requirements as specified in SAE J1684
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 5 1/2 Inch Length (Part No.86050)
from
$36.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Gates – Molded 90 Degree Heater Hose (Part No.28474)
from
$15.79
Specially designed for difficult heater hose applications requiring sharp 90 degree bends in the hose. Eliminates the need for extensive inventory of OE type curved heater hose. Just 22 sizes handle thousands of applications.
Product Features:
See More
Product Features:
- Resists electrochemical degradation and water permeation
- Use with heater hose connectors and bulk heater hose to create custom assemblies
- Compatible for coolant, air and water applications
- EPDM tube and cover, synthetic fiber reinforcement
- SAE 20R3 EC Class D1, SAE 20R4 EC Class D1
- Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
- Caution: Do not use for fuel or oil transfer applications
Dayco – Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (Part No.80271)
from
$1.99
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:
See More
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.
Dorman – Metal Heater Hose Connector 5/8 X 5/8 (OE Fix) (Part No.800-403HP)
from
$20.99
When the plastic original equipment HVAC heater hose connector becomes brittle from heat and abrasion, and cracks, leaks and breaks free from the heater hose, the dealership solution is a similar plastic replacement. Avoid a similar future failure by upgrading your repair with this more rugged Dorman OE FIX metal connector. Designed to match the performance of the factory design but engineered to far exceed its service life, this sturdy and reliable replacement connector is manufactured to precise standards for a seamless fit on specified Ford, GM and Saab vehicles.
Product Features:
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Product Features:
- Upgraded repair – this HVAC heater hose connector is manufactured from rugged metal and is designed to help provide a longer lasting repair than the original equipment plastic connector
- Prevents leaks – engineered to resist the heat and abrasion that can eventually cause a plastic heater hose connector to crack and fail
- Direct replacement – manufactured to precise standards for a seamless fit on specified Ford, GM and Saab vehicles
- Performance tested – this upgraded connector design has been rigorously pressure-tested for reliable performance
Dorman – Help – Heater Hose Connector – 5/8 In. Tube x 5/8 In. Hose (Part No.47165)
from
$16.49
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
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Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Dorman – Heater Hose Connector 5/8 x 5/8 (Part No.800-416)
from
$20.99
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
See More
Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Gates – Quick-Lok Heater Hose Connector (Part No.28500)
from
$19.79
Quick-Lok(R)Connectors provide a fast, easy way to connect replacement heater hose on cars and trucks.
Product Features:
See More
Product Features:
- Used on cars and trucks when the original quick connector fails, or the replacement hose does not include them
- Made with a new design that holds the O-ring so they can’t be lost or damaged
- Fit just as the OEM quick connects for easy installation as well as removal
Gates – Quick-Lok Heater Hose Connector (Part No.28502)
from
$20.29
Quick-Lok(R)Connectors provide a fast, easy way to connect replacement heater hose on cars and trucks.
Product Features:
See More
Product Features:
- Used on cars and trucks when the original quick coupler is faulty or the replacement hose does not include it.
- Made with a new design that retains the O-ring so they won’t get lost or damaged
- Fits like the original quick couplings for easy installation and disassembly
Dorman – Heater Hose Connector (Part No.800-403)
from
$16.99
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
See More
Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Popular 2004 Chevrolet Trailblazer Ext Heater Hoses Categories
Most Popular Heater Hose Fittings for 2004 Chevrolet Trailblazer Exts
Enhance your 2004 Chevrolet Trailblazer Ext with one of the 6 Heater Hose Fittings we have in stock, starting at just $16.49.
Dorman – Heater Hose Connector (Part No.800-403)
from
$16.99
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
See More
Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Dorman – Heater Hose Connector 5/8 x 5/8 (Part No.800-416)
from
$20.99
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
See More
Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Gates – Quick-Lok Heater Hose Connector (Part No.28500)
from
$19.79
Quick-Lok(R)Connectors provide a fast, easy way to connect replacement heater hose on cars and trucks.
Product Features:
See More
Product Features:
- Used on cars and trucks when the original quick connector fails, or the replacement hose does not include them
- Made with a new design that holds the O-ring so they can’t be lost or damaged
- Fit just as the OEM quick connects for easy installation as well as removal
Dorman – Help – Heater Hose Connector – 5/8 In. Tube x 5/8 In. Hose (Part No.47165)
from
$16.49
Made of quality materials, this HVAC heater hose connector matches the fit and function of an original equipment connector to restore leak-free performance.
Product Features:
See More
Product Features:
- Quality replacement – this heater hose connector matches the fit and function of the original equipment connector
- Durable construction – this heater hose connector is made of quality materials for a precise fit and leak-free durability
- Cost-effective solution – offers original equipment quality at competitive price
- Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
Dorman – Metal Heater Hose Connector 5/8 X 5/8 (OE Fix) (Part No.800-403HP)
from
$20.99
When the plastic original equipment HVAC heater hose connector becomes brittle from heat and abrasion, and cracks, leaks and breaks free from the heater hose, the dealership solution is a similar plastic replacement. Avoid a similar future failure by upgrading your repair with this more rugged Dorman OE FIX metal connector. Designed to match the performance of the factory design but engineered to far exceed its service life, this sturdy and reliable replacement connector is manufactured to precise standards for a seamless fit on specified Ford, GM and Saab vehicles.
Product Features:
See More
Product Features:
- Upgraded repair – this HVAC heater hose connector is manufactured from rugged metal and is designed to help provide a longer lasting repair than the original equipment plastic connector
- Prevents leaks – engineered to resist the heat and abrasion that can eventually cause a plastic heater hose connector to crack and fail
- Direct replacement – manufactured to precise standards for a seamless fit on specified Ford, GM and Saab vehicles
- Performance tested – this upgraded connector design has been rigorously pressure-tested for reliable performance
Gates – Quick-Lok Heater Hose Connector (Part No.28502)
from
$20.29
Quick-Lok(R)Connectors provide a fast, easy way to connect replacement heater hose on cars and trucks.
Product Features:
See More
Product Features:
- Used on cars and trucks when the original quick coupler is faulty or the replacement hose does not include it.
- Made with a new design that retains the O-ring so they won’t get lost or damaged
- Fits like the original quick couplings for easy installation and disassembly
Best-Selling 2004 Chevrolet Trailblazer Ext Heater Hoses
Upgrade your Trailblazer Ext with one of our 12 best-selling Heater Hoses, earning an average 4.88 stars rating across 56 reviews.
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter (Part No.A71877)
from
$26.99
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 – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 21 1/4 Inch Length (Part No.87792)
from
$37.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 5 1/2 Inch Length (Part No.86050)
from
$36.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Dayco – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 6 Inch Length (Part No.80411)
from
$7.99
Providing reliable service in applications requiring molded hoses, the Dayco heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- Meets Type EC electro-chemical requirements as specified in SAE J1684
Dayco – Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (Part No.80271)
from
$1.99
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:
See More
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.
Dorman – Molded Heater Hose: Steel/Rubber (Part No.626-639)
from
$59.99
This replacement HVAC heater hose assembly is engineered to match the fit and durability of the stock heater hose assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
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Product Features:
- Ideal replacement – this HVAC heater hose assembly directly replaces the original heater hose on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in heater hose assemblies
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 9 Inch Length (Part No.87864)
from
$29.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.
Product Features:
See More
Product Features:
- Meets the requirements of SAE J20R3, Class D-1
- Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
- Engineered as an OEM replacement
- The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
Gates – Molded 90 Degree Heater Hose (Part No.28469)
from
$18.99
Specially designed for difficult heater hose applications requiring sharp 90 degree bends in the hose. Eliminates the need for extensive inventory of OE type curved heater hose. Just 22 sizes handle thousands of applications.
Product Features:
See More
Product Features:
- Resists electrochemical degradation and water permeation
- Use with heater hose connectors and bulk heater hose to create custom assemblies
- Compatible for coolant, air and water applications
- EPDM tube and cover, synthetic fiber reinforcement
- SAE 20R3 EC Class D1, SAE 20R4 EC Class D1
- Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
- Caution: Do not use for fuel or oil transfer applications
Gates – Premium Molded Heater Hose (Part No.18856)
from
$51.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
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Product Features:
- Has all the quality features of Gates molded coolant hose and similar to OEM specifications
- Engineered to resist electrochemical degradation ┐ the leading cause of hose failure
- EPDM tube, synthetic fiber knit reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature Range: -40 Deg. F to 275 Deg. F (-40 Deg. C -135 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
Gates – Premium Molded Heater Hose (Part No.18952)
from
$44.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
See More
Product Features:
- Has all the quality features of Gates molded coolant hose and similar to OEM specifications
- Engineered to resist electrochemical degradation – the leading cause of hose failure
- EPDM tube, synthetic fiber knit reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature range: -40 Deg. F to +275 Deg. F (-40 Deg. F (+135 Deg. 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.
Gates – Premium Molded Heater Hose (Part No.18846)
from
$29.99
Gates Small I.D. Molded Coolant Hose is factory-molded, OEM style hose to fit today’s smaller, tighter-fitting engine compartments. Can be used for coolant, water and air applications. Approved for marine applications.
Product Features:
See More
Product Features:
- Has all the quality features of Gates molded cooling hose and is similar to OEM specifications.
- Engineered to resist electrochemical degradation – the leading cause of hose failure
- EPDM tube, synthetic fiber reinforcement, EPDM cover
- Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
- Temperature range -40 degrees F to +275 degrees F (-40 degrees C -135 degrees C)
- Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
Gates – Molded 90 Degree Heater Hose (Part No.28474)
from
$15.79
Specially designed for difficult heater hose applications requiring sharp 90 degree bends in the hose. Eliminates the need for extensive inventory of OE type curved heater hose. Just 22 sizes handle thousands of applications.
Product Features:
See More
Product Features:
- Resists electrochemical degradation and water permeation
- Use with heater hose connectors and bulk heater hose to create custom assemblies
- Compatible for coolant, air and water applications
- EPDM tube and cover, synthetic fiber reinforcement
- SAE 20R3 EC Class D1, SAE 20R4 EC Class D1
- Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
- Caution: Do not use for fuel or oil transfer applications
Top-Rated Heater Hose Brands For Your 2004 Chevrolet Trailblazer Ext
When it comes to finding the perfect Heater Hose for your 2004 Chevrolet Trailblazer Ext, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Heater Hose brands including Dayco and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.5 stars) and competitive prices, as low as $16.99. Purchasing a Heater Hose from us here at Advance Auto Parts is a smart move for both you and your 2004 Chevrolet Trailblazer Ext, providing peace of mind with parts that meet or exceed OEM standards.
Popular Dayco 2004 Chevrolet Trailblazer Ext Heater Hoses
If you’re looking for a top-quality Heater Hose for your 2004 Chevrolet Trailblazer Ext, Advance Auto Parts has exactly what you need with our selection of Dayco Heater Hoses. We have 3 Dayco Heater Hoses in stock for this fitment, all known for their durability and precision fit. With prices starting at just $26.99 and an average cost of $33.99, you’ll find the perfect Heater Hose for your needs and budget. Dayco Heater Hoses for the 2004 Chevrolet Trailblazer Ext come highly rated, with over 53 customer reviews and an impressive average rating of 4.5 stars. Choosing a Dayco Heater Hose from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$26.99
(44)
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter
“Perfect fit.”
from
$37.99
(8)
Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 21 1/4 Inch Length
“High quality, replacement”
Top-Quality Dorman 2004 Chevrolet Trailblazer Ext Heater Hoses
For those in search of a high-quality Heater Hose for their 2004 Chevrolet Trailblazer Ext, Advance Auto Parts offers a great selection of Dorman Heater Hoses. With 1 Dorman Heater Hoses in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Heater Hoses start at just $16.99, giving you a range of options to suit your budget. Backed by over 26 customer ratings and an average rating of 4.2 stars, Dorman Heater Hoses provide both reliability and excellent performance. Choosing a Dorman Heater Hose from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
FAQs for 2004 Chevrolet Trailblazer Ext Heater Hoses
What are the best-selling Heater Hoses for 2004 Chevrolet Trailblazer Exts?
Out of 18 Heater Hoses that fit 2004 Chevrolet Trailblazer Exts, the following parts are the top sellers:
- Heater Hose Connector (9110038) – $16.99
- Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (10844721) – $1.99
- Quick-Lok Heater Hose Connector (10911688) – $19.79
What’s the price range for 2004 Chevrolet Trailblazer Ext Heater Hoses?
The prices of Heater Hoses for the 2004 Chevrolet Trailblazer Ext range from $1.99 up to $59.99 for the most premium parts.
What is the average price of a Heater Hose for a 2004 Chevrolet Trailblazer Ext?
The average price for Heater Hoses for the 2004 Chevrolet Trailblazer Ext is $24.98. Keep in mind the variety of part types within our Heater 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 Heater Hoses for other Chevrolet Trailblazer Ext model years?
What are the cheapest Heater Hoses for my 2004 Chevrolet Trailblazer Ext?
The cheapest 2004 Chevrolet Trailblazer Ext Heater Hoses we carry are:
- Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (10844721) – $1.99
- Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 6 Inch Length (5197090) – $7.99
- Molded 90 Degree Heater Hose (10504925) – $15.79
- Heater Hose Connector – 5/8 In. Tube x 5/8 In. Hose (17190332) – $16.49
- Heater Hose Connector (9110038) – $16.99
Does Advance Auto Parts sell Heater Hoses for any other 2004 Chevrolet models?
Yes. We stock Heater Hoses for 25 other popular 2004 Chevrolet models. Some of the most popular are 2004 Tahoe Heater Hoses, 2004 Impala Heater Hoses, 2004 Silverado 1500 Heater Hoses, 2004 Malibu Heater Hoses, and 2004 Suburban 1500 Heater Hoses.
What are the top-rated Heater Hoses that fit the 2004 Chevrolet Trailblazer Ext?
Based on 336 reviews by customers, our 2004 Chevrolet Trailblazer Ext Heater Hoses have an average customer rating of 4 stars. These are the highest-rated categories of Heater Hoses for the 2004 Chevrolet Trailblazer Ext and their top-rated products:
- Heater Hose Fittings
- Heater Hose Connector (9110038) – $16.99
- Heater Hose Connector 5/8 x 5/8 (10226272) – $20.99
- Heater Hoses
- Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 21 1/4 Inch Length (20590051) – $37.99
- Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter (15590069) – $26.99
- Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 5 1/2 Inch Length (5990009) – $36.99
What types of Heater Hoses do you sell for my 2004 Chevrolet Trailblazer Ext?
As of 11/2/25, these are some of the most in-demand types of Heater Hoses for a 2004 Chevrolet Trailblazer Ext:
Can I get help with 2004 Chevrolet Trailblazer Ext Heater Hose orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Chevrolet Heater Hoses and more.
What is your return policy for Chevrolet Trailblazer Ext Heater Hoses?
Advance Auto Parts keeps returns simple. For new Chevrolet Trailblazer Ext Heater Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.