1999 Mercury Cougar Radiator Hoses

Keep Your 1999 Mercury Cougar in Top Shape with Quality Radiator Hoses

Whether you’re repairing or upgrading your Radiator Hose, using high-quality parts is key to keeping your 1999 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Coolant Hoses and By-Pass 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.

Competitive Prices and Extensive Inventory

The average price for a 1999 Mercury Cougar Radiator Hose at Advance Auto Parts is around $32.07, with a range that starts at $2.49 and goes up to $92.99. With 4 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Safety Stripe Standard Straight Heater Hose (Sold by foot), Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length, and Premium Modular Coolant Hose start at just $2.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Radiator 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 1999 Mercury Cougar in peak condition, inside and out.

Essential 1999 Mercury Cougar Radiator Hoses

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 7" Long, .63" Diameter (Part No.B71575)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 7" Long, .63" Diameter

from

$10.29
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:
  • 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
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5.50" Long, .63" Diameter (Part No.A70646)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5.50" Long, .63" Diameter

from

$10.99
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:
  • 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
See More

Gates – Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) (Part No.28411)

Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot)

from

$1.99
Premium hose constructed for long service life.

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
  • PLEASE NOTE: Item is priced and sold by the foot. See store for details.
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length (Part No.87612)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length

from

$16.99
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 Heater Hose (Part No.19605)

Premium Molded Heater Hose

from

$27.49
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:
  • It has all the quality features of Gates molded coolant hose and is 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 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.
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 4" Long, .53" Diameter (Part No.A71518)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 4" Long, .53" Diameter

from

$32.99
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:
  • 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
See More

Gates – Premium Molded Heater Hose (Part No.18769)

Premium Molded Heater Hose

from

$18.29
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

Gates – Safety Stripe Standard Straight Heater Hose (Sold by foot) (Part No.28410)

Safety Stripe Standard Straight Heater Hose (Sold by foot)

from

$3.29
Premium hose constructed for long service life.

Product Features:
  • Good resistance to high temperatures for extended periods of time, which extends the 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)
  • Warning: 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.
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 24 Inch Length (Part No.80404)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 24 Inch Length

from

$20.79
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

Dayco – Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 12 Inch Length (Part No.88431)

Molded Heater Hose; EPDM Rubber, 3/4 Inch Diameter, 12 Inch Length

from

$14.49
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

Gates – Molded 90 Degree Heater Hose (Part No.28466)

Molded 90 Degree Heater Hose

from

$19.99
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:
  • 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
See More

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length (Part No.80400)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length

from

$19.49
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

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 6" Long, .63" Diameter (Part No.A71147)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 6" Long, .63" Diameter

from

$34.99
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°F (-40°C) to +257°F (+125°C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

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
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 3.50" Long, .75" Diameter (Part No.A70647)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 3.50" Long, .75" Diameter

from

$19.99
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:
  • 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
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 15" Long, 1.50" Diameter (Part No.C70727)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 15" Long, 1.50" Diameter

from

$14.99
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:
  • 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
See More

Gates – Premium Molded Coolant Hose (Part No.21298)

Premium Molded Coolant Hose

from

$49.99
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 – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 21.25" Long, 1.44" Diameter (Part No.E71910)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 21.25" Long, 1.44" Diameter

from

$28.99
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:
  • 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
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 15.75" Long, 1.50" Diameter (Part No.D70642)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 15.75" Long, 1.50" Diameter

from

$20.29
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:
  • 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
See More

Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25311)

Vulco-Flex II Flexible Coolant Hose

from

$58.99
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for improved leak resistance
  • High flexibility for easy installation
  • Maximum vehicle coverage with minimum inventory
  • Resistant to heat, oil and ozone
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature Range: up to +257 Degrees F (+125 Degrees C)
  • Note: Gates recommends replacing clamps and connectors each time a new radiator hose is installed.
  • Warning: Do not use for fuel or oil transfer applications
See More

Dayco – Flex Radiator Hoses; EPDM Rubber, 17.25 Inch Long, 1.5 Inch Inner Dia. (Part No.81171)

Flex Radiator Hoses; EPDM Rubber, 17.25 Inch Long, 1.5 Inch Inner Dia.

from

$27.99
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.

Product Features:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
  • This hose is designed to prevent splitting, ballooning, and elongation
See More

Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25527)

Vulco-Flex II Flexible Coolant Hose

from

$26.99
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for increased leak resistance
  • High flexibility for easy installation
  • Maximum vehicle coverage with minimum inventory
  • Heat, oil and ozone resistant
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature range: up to +257 degrees Celsius. F (+125 Deg. C)
  • Note: Gates recommends replacing clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transportation applications.
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 23" Long, 1.25" Diameter (Part No.E71158)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 23" Long, 1.25" Diameter

from

$12.49
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:
  • 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
See More

Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25482)

Vulco-Flex II Flexible Coolant Hose

from

$26.49
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for increased leak resistance
  • Their great flexibility makes installation easy
  • Maximum vehicle coverage with minimal inventory
  • Heat, oil and ozone resistant
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature Range: up to +257 Deg. F (+125 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.
See More

Dayco – Flex Radiator Hoses; EPDM Rubber, 2 Inch Long, 1.25 Inch Inner Dia. (Part No.81061)

Flex Radiator Hoses; EPDM Rubber, 2 Inch Long, 1.25 Inch Inner Dia.

from

$34.99
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40øF (-40øC) to +257øF (+125øC). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.

Product Features:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
  • This hose is designed to prevent splitting, ballooning, and elongation
See More

Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25260)

Vulco-Flex II Flexible Coolant Hose

from

$45.99
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for increased leak resistance
  • Their great flexibility makes installation easy
  • Maximum vehicle coverage with minimal inventory
  • Resistant to heat, oil and ozone
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature Range: up to +257 Deg. F (+125 Deg. C)
  • Note: Gates recommends replacing clamps and connectors each time a new cooling hose is installed.
  • Caution: Do not use for fuel or oil transfer applications
See More

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 14.50" Long, 1.75" Diameter (Part No.C70438)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 14.50" Long, 1.75" Diameter

from

$28.99
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:
  • 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
See More

Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25532)

Vulco-Flex II Flexible Coolant Hose

from

$29.99
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for greater leak resistance
  • High flexibility for easy installation
  • Maximum vehicle coverage with minimum inventory
  • Heat, oil and ozone resistant
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature Range: up to +257 Deg. F (+125 Deg. C)
  • Note: Gates recommends replacing clamps and connectors each time a new radiator hose is installed.
  • Warning: Do not use for fuel or oil transfer applications
See More

Gates – Premium Molded Coolant Hose (Part No.20763)

Premium Molded Coolant Hose

from

$31.49
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

Most Popular Coolant Hoses for 1999 Mercury Cougars

Enhance your 1999 Mercury Cougar with one of the 3 Coolant Hoses we have in stock, starting at just $2.49.

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 8" Long, 1.06" Diameter (Part No.B71839)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 8" Long, 1.06" Diameter

from

$15.79
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

Product Features:
  • 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
See More

Gates – Safety Stripe Standard Straight Heater Hose (Sold by foot) (Part No.28409)

Safety Stripe Standard Straight Heater Hose (Sold by foot)

from

$2.49
Premium hose constructed for long service life.

Product Features:
  • Good resistance to high temperatures for extended periods of time, which extends the 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)
  • Warning: Do not use for fuel or oil transfer applications
  • PLEASE NOTE: Item is priced and sold by the foot. See store for details.
See More

Gates – Premium Modular Coolant Hose (Part No.22180)

Premium Modular Coolant Hose

from

$92.99
Modular coolant hoses are on many of today’s vehicles and are much more complex than the standard molded hoses of the past. Modular coolant hoses are hose assemblies with one or more components built into the hose. Some examples of these components include hose branches, quick connectors, valves, sensors, bleeders and flow restrictors. Manufactured identical or equivalent to the OE hose, modular coolant hoses will keep your vehicle’s cooling system running properly and efficiently for years to come.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation ┐ the leading cause of hose failure
  • EPDM tube: synthetic fiber knit reinforcement, heat-, ozone- and chemical coolant-resistant EPDM cover
  • Manufactured with OEM-exact hose components (quick connects, branch connectors/tees, sensors, etc.)
  • Meets SAE 20R3 EC Class D1 under 25mm (1 in.) ID, SAE 20R4 EC Class D1 for 25mm (1 in.) ID and over
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
See More

Best-Selling 1999 Mercury Cougar By-Pass Hose

Upgrade your Cougar with our best-selling By-Pass Hose.

Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length (Part No.87612)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 6 Inch Length

from

$16.99
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

FAQs for 1999 Mercury Cougar Radiator Hoses

What are the best-selling Radiator Hoses for 1999 Mercury Cougars?

Out of 4 Radiator Hoses that fit 1999 Mercury Cougars, the following parts are the top sellers:

What’s the price range for 1999 Mercury Cougar Radiator Hoses?

The prices of Radiator Hoses for the 1999 Mercury Cougar range from $2.49 up to $92.99 for the most premium parts.

What is the average price of a Radiator Hose for a 1999 Mercury Cougar?

The average price for Radiator Hoses for the 1999 Mercury Cougar is $32.07. Keep in mind the variety of part types within our Radiator 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 Radiator Hoses for other Mercury Cougar model years?

Yes, we carry Radiator Hoses for 33 model years of Mercury Cougars between 1967 and 2002. The following model years are the most popular for Radiator Hose purchases: 2002, 2001, 2000, 1997, 1996, 1995, 1994, 1993, and 1992.

What are the cheapest Radiator Hoses for my 1999 Mercury Cougar?

The cheapest 1999 Mercury Cougar Radiator Hoses we carry are:

Does Advance Auto Parts sell Radiator Hoses for any other 1999 Mercury models?

Yes. We stock Radiator Hoses for 5 other popular 1999 Mercury models. Some of the most popular are 1999 Grand Marquis Radiator Hoses, 1999 Mountaineer Radiator Hoses, 1999 Villager Radiator Hoses, 1999 Sable Radiator Hoses, and 1999 Mystique Radiator Hoses.

What are the top-rated Radiator Hoses that fit the 1999 Mercury Cougar?

The one 1999 Mercury Cougar Radiator Hose we have in stock is the Safety Stripe Standard Straight Heater Hose (Sold by foot). It costs $2.49.

What types of Radiator Hoses do you sell for my 1999 Mercury Cougar?

As of 11/2/25, these are some of the most in-demand types of Radiator Hoses for a 1999 Mercury Cougar:

Can I get help with 1999 Mercury Cougar Radiator Hose orders?

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

What is your return policy for Mercury Cougar Radiator Hoses?

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