1978 Dodge Diplomat Heater Hoses
Keep Your 1978 Dodge Diplomat 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 1978 Dodge Diplomat looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including 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. For example, Dayco Heater Hoses start at just $17.79 with an average 4.5 star rating. With over 12 reviews and a solid 5 star average, you can shop with confidence knowing other Dodge Diplomat owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1978 Dodge Diplomat Heater Hose at Advance Auto Parts is around $4.15, with a range that starts at $1.49 and goes up to $17.79. With 3 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) and Straight Heater Hose; EPDM Rubber, 1/2 Inch Diameter (sold by foot) start at just $1.49 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 Pulleys and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 1978 Dodge Diplomat in peak condition, inside and out.
Find Your Specific 1978 Dodge Diplomat Heater Hoses
Looking for the perfect Heater Hose for your 1978 Dodge Diplomat? 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 Dodge Diplomat. Whether you’re driving a 1978 model or another popular model year like
1977,
1979,
1981,
1982,
1983,
1985,
1986,
1987, and
1988, 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 1978 Dodge Diplomat Heater Hoses
Gates – Silicone Straight Heater Hose (Sold by foot) (Part No.26241)
from
$17.49
Constructed with silicone rubber. Ideal for extremely high temperature service in radiator, heater and other coolant transfer hose applications. Approved for marine applications.
Product Features:
See More
Product Features:
- High flexibility for versatile applications
- High environmental resistance to weathering, coolant deterioration, and ozone
- Suitable for emissions hose applications
- Polyester textile cord reinforcement for high durability
- Approved for marine applications.
- Exceeds SAE 20R3 Class A Tube and Cover
- Temperature range: -70 Deg. F to +400 Deg. F (+57 Deg. C to +204 Deg. C)
- Note: For a maintenance free connection, use PowerGrip SB clamps
- Warning: 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.
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 60 Inch Length (Part No.80407)
from
$17.79
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:
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, 1/2 Inch Diameter (sold by foot) (Part No.80270)
from
$1.49
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.
Popular 1978 Dodge Diplomat Heater Hoses Categories
Most Popular Heater Hoses for 1978 Dodge Diplomats
Enhance your 1978 Dodge Diplomat with one of the 3 Heater Hoses we have in stock, starting at just $1.49.
Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 60 Inch Length (Part No.80407)
from
$17.79
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:
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.
Dayco – Straight Heater Hose; EPDM Rubber, 1/2 Inch Diameter (sold by foot) (Part No.80270)
from
$1.49
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.
Top-Rated Heater Hose Brands For Your 1978 Dodge Diplomat
When it comes to finding the perfect Heater Hose for your 1978 Dodge Diplomat, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 1 trusted brands. We carry the most popular Heater Hose brands including Dayco, and more, all known for their exceptional customer ratings (average brand rating of 4.5 stars) and competitive prices, as low as $17.79. Purchasing a Heater Hose from us here at Advance Auto Parts is a smart move for both you and your 1978 Dodge Diplomat, providing peace of mind with parts that meet or exceed OEM standards.
Popular Dayco 1978 Dodge Diplomat Heater Hoses
If you’re looking for a top-quality Heater Hose for your 1978 Dodge Diplomat, Advance Auto Parts has exactly what you need with our selection of Dayco Heater Hoses. We have 1 Dayco Heater Hoses in stock for this fitment, all known for their durability and precision fit. With prices starting at just $17.79, you’ll find the perfect Heater Hose for your needs and budget. Dayco Heater Hoses for the 1978 Dodge Diplomat come highly rated, with over 2 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.
FAQs for 1978 Dodge Diplomat Heater Hoses
What are the best-selling Heater Hoses for 1978 Dodge Diplomats?
Out of 3 Heater Hoses that fit 1978 Dodge Diplomats, the following parts are the top sellers:
- Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (10844721) – $1.99
- Straight Heater Hose; EPDM Rubber, 1/2 Inch Diameter (sold by foot) (10844725) – $1.49
What’s the price range for 1978 Dodge Diplomat Heater Hoses?
The prices of Heater Hoses for the 1978 Dodge Diplomat range from $1.49 up to $17.79 for the most premium parts.
What is the average price of a Heater Hose for a 1978 Dodge Diplomat?
The average price for Heater Hoses for the 1978 Dodge Diplomat is $4.15. 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 Dodge Diplomat model years?
What are the cheapest Heater Hoses for my 1978 Dodge Diplomat?
The cheapest 1978 Dodge Diplomat Heater Hoses we carry are:
- Straight Heater Hose; EPDM Rubber, 1/2 Inch Diameter (sold by foot) (10844725) – $1.49
- Straight Heater Hose; EPDM Rubber, 5/8 Inch Diameter (sold by foot) (10844721) – $1.99
- Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 60 Inch Length (5197082) – $17.79
Does Advance Auto Parts sell Heater Hoses for any other 1978 Dodge models?
Yes. We stock Heater Hoses for 20 other popular 1978 Dodge models. Some of the most popular are 1978 Challenger Heater Hoses, 1978 Aspen Heater Hoses, 1978 Monaco Heater Hoses, 1978 Omni Heater Hoses, and 1978 RD200 Heater Hoses.
What are the top-rated Heater Hoses that fit the 1978 Dodge Diplomat?
The one 1978 Dodge Diplomat Heater Hose we have in stock is the Straight Heater Hose; EPDM Rubber, 1/2 Inch Diameter (sold by foot). It costs $1.49.
What types of Heater Hoses do you sell for my 1978 Dodge Diplomat?
We currently have just 1 Heater Hose in stock for a 1978 Dodge Diplomat, and as of 3/1/26, it is a Heater Hose.
Can I get help with 1978 Dodge Diplomat Heater Hose orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Dodge Heater Hoses and more.
What is your return policy for Dodge Diplomat Heater Hoses?
Advance Auto Parts keeps returns simple. For new Dodge Diplomat Heater Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.