1966 Mercury S-55 Radiator Hoses
Keep Your 1966 Mercury S-55 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 1966 Mercury S-55 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 1966 Mercury S-55 Radiator Hose at Advance Auto Parts is around $22.99, with a range that starts at $1.99 and goes up to $34.99. With 5 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Flex Radiator Hoses; EPDM Rubber, 11.25 Inch Long, 1.75 Inch Inner Dia., Premium Molded Coolant Hose, and Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) start at just $1.99 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 Oil Cooler Hoses and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 1966 Mercury S-55 in peak condition, inside and out.
Find Your Specific 1966 Mercury S-55 Radiator Hoses
Looking for the perfect Radiator Hose for your 1966 Mercury S-55? You’re in the right place. Below, you’ll find links to various types of Radiator Hoses that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Radiator Hoses, ensuring durability and a precise fit for your Mercury S-55. Whether you’re driving a 1966 model or another popular model year like
1967, we’ve got you covered. Purchasing Radiator Hoses from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Radiator Hoses that fit your vehicle.
Essential 1966 Mercury S-55 Radiator Hoses
Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26603)
from
$22.49
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.
Product Features:
See More
Product Features:
- Designed to resist electrochemical degradation, the leading cause of pipe failure
- The steel wire spiral allows them to take on multiple shapes without bending or crushing
- EPDM tubing and neoprene lid for extended life
- Polyester fabric reinforcement vulcanizes without unnecessary deformation in connections
- Heat, oil and ozone resistant
- Performs to SAE 20R5 Type EC Class D-2 specifications
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
- Warning: Do not use for fuel or oil transfer applications
- Caution: Do not use for fuel or oil transfer applications.
Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26505)
from
$38.49
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.
Product Features:
See More
Product Features:
- Designed to resist electrochemical degradation, the leading cause of pipe failure
- Built-in coiled steel wire enables medium-sized bends without bending or bending
- EPDM tube and neoprene cover for longer life
- Polyester fabric-ply reinforcement vulcanizes into shape without unnecessary strain on connections
- Heat, oil, and ozone resistant
- Meets SAE 20R5 Type EC Class D-2 specifications
- 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.
Gates – Premium Molded Coolant Hose (Part No.20412)
from
$34.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
See More
Product Features:
- Materials specially designed to resist collapse in a vacuum
- Designed to resist electrochemical degradation, which is the leading cause of hose failure
- Pre-formed for a good fit and to ensure perfectly sealed connections
- EPDM tube; knitted synthetic fiber reinforcement; EPDM lid resistant to heat, ozone and chemical refrigerants
- Meets the requirements of SAE 20R4, Class D2 and DIN 73411, Class A (except for tolerances)
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 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 transfer applications
Dayco – Flex Radiator Hoses; EPDM Rubber, 11.25 Inch Long, 1.75 Inch Inner Dia. (Part No.81311)
from
$20.99
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:
See More
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
Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26504)
from
$34.49
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.
Product Features:
See More
Product Features:
- Engineered to resist electrochemical degradation, the leading cause of hose failure
- Built-in steel spiral wire allows for medium sized curves without kinking or collapsing
- EPDM tube and Neoprene cover for extended service life
- Polyester fabric reinforcement vulcanizes without unnecessary deformation in connections
- Resistant to heat, oil and ozone
- Meets SAE 20R5 Type EC Class D-2 specifications
- Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
- Caution: Do not use for fuel or oil transportation applications.
- Caution: Do not use for fuel or oil transfer applications.
Gates – Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) (Part No.28411)
from
$1.99
Premium hose constructed for long service life.
Product Features:
See More
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.
Popular 1966 Mercury S-55 Radiator Hoses Categories
Most Popular Coolant Hoses for 1966 Mercury S-55s
Enhance your 1966 Mercury S-55 with one of the 4 Coolant Hoses we have in stock, starting at just $20.99.
Dayco – Flex Radiator Hoses; EPDM Rubber, 11.25 Inch Long, 1.75 Inch Inner Dia. (Part No.81311)
from
$20.99
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:
See More
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
Gates – Premium Molded Coolant Hose (Part No.20412)
from
$34.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
See More
Product Features:
- Materials specially designed to resist collapse in a vacuum
- Designed to resist electrochemical degradation, which is the leading cause of hose failure
- Pre-formed for a good fit and to ensure perfectly sealed connections
- EPDM tube; knitted synthetic fiber reinforcement; EPDM lid resistant to heat, ozone and chemical refrigerants
- Meets the requirements of SAE 20R4, Class D2 and DIN 73411, Class A (except for tolerances)
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 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 transfer applications
Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26504)
from
$34.49
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.
Product Features:
See More
Product Features:
- Engineered to resist electrochemical degradation, the leading cause of hose failure
- Built-in steel spiral wire allows for medium sized curves without kinking or collapsing
- EPDM tube and Neoprene cover for extended service life
- Polyester fabric reinforcement vulcanizes without unnecessary deformation in connections
- Resistant to heat, oil and ozone
- Meets SAE 20R5 Type EC Class D-2 specifications
- Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
- Caution: Do not use for fuel or oil transportation applications.
- Caution: Do not use for fuel or oil transfer applications.
Gates – Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (Part No.26603)
from
$22.49
Heavy-duty flexible hose designed to replace straight or curved coolant hoses. The benefit is maximum coverage with minimum inventory. Hose inside diameter remains constant from end to end. No convolutions inside hose so tube is smooth, allowing free coolant flow. Approved for marine applications.
Product Features:
See More
Product Features:
- Designed to resist electrochemical degradation, the leading cause of pipe failure
- The steel wire spiral allows them to take on multiple shapes without bending or crushing
- EPDM tubing and neoprene lid for extended life
- Polyester fabric reinforcement vulcanizes without unnecessary deformation in connections
- Heat, oil and ozone resistant
- Performs to SAE 20R5 Type EC Class D-2 specifications
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
- Warning: Do not use for fuel or oil transfer applications
- Caution: Do not use for fuel or oil transfer applications.
Best-Selling 1966 Mercury S-55 By-Pass Hose
Upgrade your S-55 with our best-selling By-Pass Hose.
Gates – Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) (Part No.28411)
from
$1.99
Premium hose constructed for long service life.
Product Features:
See More
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.
FAQs for 1966 Mercury S-55 Radiator Hoses
What are the best-selling Radiator Hoses for 1966 Mercury S-55s?
Out of 5 Radiator Hoses that fit 1966 Mercury S-55s, the following parts are the top sellers:
- Flex Radiator Hoses; EPDM Rubber, 11.25 Inch Long, 1.75 Inch Inner Dia. (5191149) – $20.99
- Premium Molded Coolant Hose (10909991) – $34.99
- Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) (10505038) – $1.99
What’s the price range for 1966 Mercury S-55 Radiator Hoses?
The prices of Radiator Hoses for the 1966 Mercury S-55 range from $1.99 up to $34.99 for the most premium parts.
What is the average price of a Radiator Hose for a 1966 Mercury S-55?
The average price for Radiator Hoses for the 1966 Mercury S-55 is $22.99. 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.
What are the cheapest Radiator Hoses for my 1966 Mercury S-55?
The cheapest 1966 Mercury S-55 Radiator Hoses we carry are:
- Straight Heater Hose: EPDM, Direct Fit, 0.625" Inside Diameter (sold by foot) (10505038) – $1.99
- Flex Radiator Hoses; EPDM Rubber, 11.25 Inch Long, 1.75 Inch Inner Dia. (5191149) – $20.99
- Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (10504981) – $22.49
- Green Stripe Heavy-Duty Vulco-Flex Coolant Hose (10504944) – $34.49
- Premium Molded Coolant Hose (10909991) – $34.99
Does Advance Auto Parts sell Radiator Hoses for any other 1966 Mercury models?
Yes. We stock Radiator Hoses for 11 other popular 1966 Mercury models. Some of the most popular are 1966 Monterey Radiator Hoses, 1966 Marauder Radiator Hoses, 1966 Colony Park Radiator Hoses, 1966 Villager Radiator Hoses, and 1966 Comet Radiator Hoses.
What types of Radiator Hoses do you sell for my 1966 Mercury S-55?
As of 11/2/25, these are some of the most in-demand types of Radiator Hoses for a 1966 Mercury S-55:
Can I get help with 1966 Mercury S-55 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 S-55 Radiator Hoses?
Advance Auto Parts keeps returns simple. For new Mercury S-55 Radiator Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.