2003 Chevrolet Impala Heater Hoses

Keep Your 2003 Chevrolet Impala 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 2003 Chevrolet Impala looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Heater Hose Fittings, Fuel Injection Throttle Body Heater Hoses, 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 $16.29 with an average 4.5 star rating. Dorman offer similar pricing and quality, backed by strong customer feedback. With over 470 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet Impala owners approve.

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 2003 Chevrolet Impala in peak condition, inside and out.

Essential 2003 Chevrolet Impala Heater Hoses

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 19 Inch Length (Part No.87847)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 19 Inch Length

from

$33.49
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:
  • 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
See More

Dayco – Molded Heater Hose: EPDM Rubber, Direct Fit, 3/4" Inside Diameter (Part No.87609)

Molded Heater Hose: EPDM Rubber, Direct Fit, 3/4" Inside Diameter

from

$16.79
Dayco Small I.D. Molded Heater Hose is designed to replace OEM coolant hose in applications where molded hose in small diameters (1″ I.D. or smaller) is required. The molded configuration eliminates the need for multiple connections of hoses and clamps. The knitted reinforcement and synthetic EPDM construction provides high strength and resistance to detrimental environmental elements, coolants, and temperature variations of -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). In addition to meeting SAE J20R4, Class D-1 requirements, this hose is designed to meet Type EC electro-chemical requirements as specified in SAE J1684. If the OE parts have a quick connect end, Dayco’s Small I.D. Molded Heater Hoses are also made with the quick connect assembled onto the hose for fast, convenient installation.

Product Features:
  • Made with a tough EPDM rubber compound this hose will resist the detrimental effects of heat, ozone and impacts from road debris
  • This hose meets SAE J20R4, Class D1 and SAE J1684 Type EC specifications
  • Highly resistant to electro-chemical degradation and premature stress cracking of the tube
  • The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
See More

Dayco – Molded Heater Hose; EPDM Rubber, 1/4 Inch Diameter, 14 1/4 Inch Length (Part No.86501)

Molded Heater Hose; EPDM Rubber, 1/4 Inch Diameter, 14 1/4 Inch Length

from

$11.99
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:
  • 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
See More

Gates – Premium Molded Coolant Hose (Part No.20338)

Premium Molded Coolant Hose

from

$9.79
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/16 Inch Diameter, 8 1/4 Inch Length (Part No.86800)

Molded Heater Hose; EPDM Rubber, 5/16 Inch Diameter, 8 1/4 Inch Length

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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 36 Inch Length (Part No.80416)

Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 36 Inch Length

from

$18.29
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:
  • 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
See More

Dorman – Molded Heater Hose: Steel (Part No.626-525)

Molded Heater Hose: Steel

from

$68.99
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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 20 Inch Length (Part No.E88001)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 20 Inch Length

from

$109.99
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 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C) and the “quick connect” end allows for fast, convenient installation.

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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 19 Inch Length (Part No.87901)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 19 Inch Length

from

$47.99
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:
  • 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
See More

GM Genuine Parts – Fuel Injection Throttle Body Heater Hose (Part No.24504913)

Fuel Injection Throttle Body Heater Hose

from

$19.79
GM Genuine Parts Fuel Injection Throttle Body Heater Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
See More

Dorman – Help – Heater Hose Fittings with O-Rings – Plastic (Part No.47065)

Heater Hose Fittings with O-Rings - Plastic

from

$10.99
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:
  • 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
See More

Dorman – Help – Heater Hose Fittings with O-Rings – Aluminum (OE Fix) (Part No.47065HP)

Heater Hose Fittings with O-Rings - Aluminum (OE Fix)

from

$20.49
Original equipment heater hose connectors on certain vehicles are made of brittle plastic that cracks and leaks. These Dorman OE FIX connectors are upgraded to aluminum for greater durability.

Product Features:
  • Upgraded replacement – these heater hose elbow connectors are made of aluminum instead of brittle plastic
  • Smart solution – reduces the likelihood of the same part failing again the same way
  • Complete set – includes both upper and lower elbow with O-ring seal
  • Application specific – made specifically for wide range of Chevrolet, Buick, Oldsmobile and Pontiac vehicles
See More

Dorman – Heater Hose Tee Connector (Part No.800-918)

Heater Hose Tee Connector

from

$28.99
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:
  • 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
See More

Dorman – Help – Heater Hose Fitting for Belt tensioner (Part No.47027)

Heater Hose Fitting for Belt tensioner

from

$23.99
This replacement HVAC heater hose fitting is engineered to match the fit and durability of the stock hose fitting on specified vehicles. It is designed to withstand extreme temperatures to ensure leak-free service.

Product Features:
  • Ideal replacement – this HVAC heater hose fitting directly replaces the original fitting on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperatures and deliver leak-free performance
  • Cost-effective solution – offers original equipment quality at a competitive price
  • Quality tested – this part has undergone try-on testing to ensure a quality fit
See More

Most Popular Heater Hose Fittings for 2003 Chevrolet Impalas

Enhance your 2003 Chevrolet Impala with one of the 3 Heater Hose Fittings we have in stock, starting at just $10.99.

Dorman – Help – Heater Hose Fitting for Belt tensioner (Part No.47027)

Heater Hose Fitting for Belt tensioner

from

$23.99
This replacement HVAC heater hose fitting is engineered to match the fit and durability of the stock hose fitting on specified vehicles. It is designed to withstand extreme temperatures to ensure leak-free service.

Product Features:
  • Ideal replacement – this HVAC heater hose fitting directly replaces the original fitting on specified vehicle years, makes and models
  • Durable construction – this part is specifically designed to withstand extreme temperatures and deliver leak-free performance
  • Cost-effective solution – offers original equipment quality at a competitive price
  • Quality tested – this part has undergone try-on testing to ensure a quality fit
See More

Dorman – Help – Heater Hose Fittings with O-Rings – Aluminum (OE Fix) (Part No.47065HP)

Heater Hose Fittings with O-Rings - Aluminum (OE Fix)

from

$20.49
Original equipment heater hose connectors on certain vehicles are made of brittle plastic that cracks and leaks. These Dorman OE FIX connectors are upgraded to aluminum for greater durability.

Product Features:
  • Upgraded replacement – these heater hose elbow connectors are made of aluminum instead of brittle plastic
  • Smart solution – reduces the likelihood of the same part failing again the same way
  • Complete set – includes both upper and lower elbow with O-ring seal
  • Application specific – made specifically for wide range of Chevrolet, Buick, Oldsmobile and Pontiac vehicles
See More

Dorman – Help – Heater Hose Fittings with O-Rings – Plastic (Part No.47065)

Heater Hose Fittings with O-Rings - Plastic

from

$10.99
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:
  • 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
See More

Best-Selling 2003 Chevrolet Impala Fuel Injection Throttle Body Heater Hose

Upgrade your Impala with our best-selling Fuel Injection Throttle Body Heater Hose.

GM Genuine Parts – Fuel Injection Throttle Body Heater Hose (Part No.24504913)

Fuel Injection Throttle Body Heater Hose

from

$19.79
GM Genuine Parts Fuel Injection Throttle Body Heater Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
See More

Top-Quality Heater Hoses for 2003 Chevrolet Impalas

Choose a high-quality OEM or aftermarket Heater Hose for Chevrolet Impalas and enjoy top-notch performance from $0.99.

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 25 Inch Length (Part No.87606)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 25 Inch Length

from

$33.99
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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 16 Inch Length (Part No.86123)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 16 Inch Length

from

$22.99
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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 14 Inch Length (Part No.87880)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 14 Inch Length

from

$16.29
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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/16 Inch Diameter, 8 1/4 Inch Length (Part No.86800)

Molded Heater Hose; EPDM Rubber, 5/16 Inch Diameter, 8 1/4 Inch Length

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:
  • 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
See More

Dorman – Molded Heater Hose: Steel (Part No.626-113)

Molded Heater Hose: Steel

from

$111.99
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:
  • 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
See More

Dorman – Molded Heater Hose: Steel (Part No.626-525)

Molded Heater Hose: Steel

from

$68.99
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:
  • 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
See More

Dorman – Molded Heater Hose: Steel (Part No.626-107)

Molded Heater Hose: Steel

from

$54.99
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:
  • 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
See More

Gates – Premium Molded Heater Hose (Part No.19210)

Premium Molded Heater Hose

from

$54.99
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:
  • Has all the quality features of Gates molded cooling hose and is similar to OEM specifications.
  • Designed to resist electrochemical degradation, which is 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 degrees F to +275 degrees F (-40 degrees C -135 degrees C)
  • Note: Gates recommends replacing clamps and connectors each time a new cooling hose is installed.
  • Caution: Do not use for fuel or oil transportation applications.
See More

Gates – Premium Molded Heater Hose (Part No.19120)

Premium Molded Heater Hose

from

$36.99
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:
  • Has all the quality features of Gates molded coolant hose and similar to OEM specifications
  • Designed 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
  • Warning: Do not use for fuel or oil transfer applications
See More

Gates – Premium Molded Heater Hose (Part No.18030)

Premium Molded Heater Hose

from

$16.79
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:
  • 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
See More

Dayco – Straight Heater Hose; EPDM Rubber, 5/16 Inch Diameter (sold by foot) (Part No.80258)

Straight Heater Hose; EPDM Rubber, 5/16 Inch Diameter (sold by foot)

from

$0.99
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:
  • 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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Top-Rated Heater Hose Brands For Your 2003 Chevrolet Impala

When it comes to finding the perfect Heater Hose for your 2003 Chevrolet Impala, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 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 $16.29. Purchasing a Heater Hose from us here at Advance Auto Parts is a smart move for both you and your 2003 Chevrolet Impala, providing peace of mind with parts that meet or exceed OEM standards.

Popular Dayco 2003 Chevrolet Impala Heater Hoses

If you’re looking for a top-quality Heater Hose for your 2003 Chevrolet Impala, 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 $16.29 and an average cost of $24.42, you’ll find the perfect Heater Hose for your needs and budget. Dayco Heater Hoses for the 2003 Chevrolet Impala come highly rated, with over 8 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.
Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 25 Inch Length
from $33.99
(1)
Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 25 Inch Length
“Fit good, a little long, at one end, but no problem cutting it to fit.”
Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 16 Inch Length
from $22.99
(5)
Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 16 Inch Length
“Quality and fit qood”

Top-Quality Dorman 2003 Chevrolet Impala Heater Hoses

For those in search of a high-quality Heater Hose for their 2003 Chevrolet Impala, Advance Auto Parts offers a great selection of Dorman Heater Hoses. With 2 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 $20.49, with an average price of $22.24, giving you a range of options to suit your budget. Backed by over 120 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.
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FAQs for 2003 Chevrolet Impala Heater Hoses

What are the best-selling Heater Hoses for 2003 Chevrolet Impalas?

Out of 15 Heater Hoses that fit 2003 Chevrolet Impalas, the following parts are the top sellers:

What’s the price range for 2003 Chevrolet Impala Heater Hoses?

The prices of Heater Hoses for the 2003 Chevrolet Impala range from $0.99 up to $111.99 for the most premium parts.

What is the average price of a Heater Hose for a 2003 Chevrolet Impala?

The average price for Heater Hoses for the 2003 Chevrolet Impala is $31.37. 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 Impala model years?

Yes, we carry Heater Hoses for 46 model years of Chevrolet Impalas between 1958 and 2019. The following model years are the most popular for Heater Hose purchases: 2019, 2018, 2017, 2016, 2015, 2014, 2011, 2010, and 2009.

What are the cheapest Heater Hoses for my 2003 Chevrolet Impala?

The cheapest 2003 Chevrolet Impala Heater Hoses we carry are:

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

Yes. We stock Heater Hoses for 24 other popular 2003 Chevrolet models. Some of the most popular are 2003 Tahoe Heater Hoses, 2003 Silverado 1500 Heater Hoses, 2003 Malibu Heater Hoses, 2003 Suburban 1500 Heater Hoses, and 2003 Monte Carlo Heater Hoses.

What are the top-rated Heater Hoses that fit the 2003 Chevrolet Impala?

Based on 470 reviews by customers, our 2003 Chevrolet Impala Heater Hoses have an average customer rating of 4 stars. These are the highest-rated categories of Heater Hoses for the 2003 Chevrolet Impala and their top-rated products:

What types of Heater Hoses do you sell for my 2003 Chevrolet Impala?

As of 11/2/25, these are some of the most in-demand types of Heater Hoses for a 2003 Chevrolet Impala:

Can I get help with 2003 Chevrolet Impala 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 Impala Heater Hoses?

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