1978 Cadillac DeVille Air Conditioning Parts
Keep Your 1978 Cadillac DeVille in Top Shape with Quality Air Conditioning Parts
Whether you’re repairing or upgrading your Air Conditioning Part, using high-quality parts is key to keeping your 1978 Cadillac DeVille looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including , , and . 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 Air Conditioning Parts from Trusted Brands
Looking for a reliable Air Conditioning Part? We’ve got you covered with options from brands you know and trust like , Factory Air, and Dorman. For example, Air Conditioning Parts start at just $3.99 with an average 4.4 star rating. Factory Air and Dorman offer similar pricing and quality, backed by strong customer feedback. With over 528 reviews and a solid 3 star average, you can shop with confidence knowing other Cadillac DeVille owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1978 Cadillac DeVille Air Conditioning Part at Advance Auto Parts is around $75.87, with a range that starts at $1.99 and goes up to $443.99. With 33 options in stock from 9 trusted brands, finding the right fit is easy. Popular picks like Compressor Mounted High Cut-Out Pressure Switch, Cap & Valve A/C System Seal Kit, and Remanufactured GM R4 Heavy Compressor with Clutch start at just $20.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Air Conditioning Part, don’t forget to check out other key components like Blower Motor and Related Products and Engine Cooling Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Cadillac DeVille in peak condition, inside and out.
Essential 1978 Cadillac DeVille Air Conditioning Parts
Factory Air – Cap & Valve A/C System Seal Kit (Part No.26775)
from
$18.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.
Product Features:
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Product Features:
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- SUV and rear air applications
- Application specific
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- SUV and rear air applications
- Application specific
KAI – A/C Accumulator (Part No.ACM010590)
from
$139.99
New Standard Replacement A/C Accumulator
Product Features:
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Product Features:
- Meets All Federal Motor Safety Standards
- No Drilling Needed For Installation
- No Modifications Needed For Installation
- Direct Fit Replacement For Your Vehicle
- Same Form Fit And Function As OE
- Check Out The Large Selection Of Parts Available For Your Vehicle
Driveworks – Ball Bearing (Part No.S-907257)
from
$22.49
Value-priced bearing meets all cataloged application requirements.
Product Features:
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Product Features:
- Brand may vary by location
KAI – A/C Compressor (Part No.ACP011395)
from
$348.99
New Standard Replacement A/C Compressor, V6 Engine
Product Features:
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Product Features:
- V6 Engine
- Meets All Federal Motor Safety Standards
- No Drilling Needed For Installation
- No Modifications Needed For Installation
- Direct Fit Replacement For Your Vehicle
- Same Form Fit And Function As OE
- Check Out The Large Selection Of Parts Available For Your Vehicle
National – Multi-Purpose Bearing (Part No.S-128)
from
$12.49
Product Features:
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- RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
- PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
- OE-STYLE DESIGN: Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Dorman – Help – Air Conditioning Service Port Caps (Part No.54374)
from
$9.99
This A/C service valve cap is designed to match the fit and function of the original cap on specified applications, and is engineered for reliable performance and durability.
Product Features:
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Product Features:
- Direct replacement – this A/C service valve cap is designed to match the fit and function of the original cap on specified applications
- Restores functionality – reliable replacement for an original part that is leaking or has failed due to fatigue
- Durable construction – this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
Carquest Premium – A/C Accumulator Tube Outlet (Part No.T34206)
from
$10.49
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.
Product Features:
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Product Features:
- All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
- Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
- All accumulators and receiver driers are helium leak tested prior to packaging.
- O-Rings necessary for installation are included.
Carquest Premium – A/C New; w/ Clutch; w/ 10S20F Compressor (Part No.T68316)
from
$354.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
- New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
- The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
- All new compressors must pass a helium leak test and pump up function test prior to packaging.
- O-Rings and gaskets necessary for installation are included.
- O-Rings and gaskets necessary for installation are included.
Carquest Premium – Multi-Use Connector (Part No.PTA1752)
from
$14.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
Product Features:
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Product Features:
- Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- Sealed connections (where applicable) to prevent environmental corrosion and performance issues
- Global coverage for import and/or domestic applications
- OE specified wire gauge to ensure a reliable electrical connection
- Designed to meet or exceed OE specifications in form, fit and function
Factory Air – Green Round O-Ring (Sold by each) (Part No.24650)
from
$1.99
Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications
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Carquest Premium – A/C Evaporator Core (Part No.T54593)
from
$128.99
Carquest Evaporators are designed to remove heat from the air inside the passenger compartment of a vehicle resulting in cooler air temperatures. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.
Product Features:
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Product Features:
- The design and manufacture of the evaporators result in uniform refrigerant distribution with optimal flow for improved performance and maximum heat transfer.
- The evaporators are constructed to offer a lightweight, compact design that will fit easily within the engine compartment.
- The surface treatment on each part ensures optimum water drainage to prevent mold and odors in the system.
- The evaporators are 100% tested to meet or exceed original equipment specifications. Each part is helium tested to ensure no leaks.
- O-Rings and gaskets necessary for installation are included.
Carquest Premium – A/C Evaporator Core (Part No.T54432)
from
$128.99
Carquest Evaporators are designed to remove heat from the air inside the passenger compartment of a vehicle resulting in cooler air temperatures. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.
Product Features:
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Product Features:
- The design and manufacture of the evaporators result in uniform refrigerant distribution with optimal flow for improved performance and maximum heat transfer.
- The evaporators are constructed to offer a lightweight, compact design that will fit easily within the engine compartment.
- The surface treatment on each part ensures optimum water drainage to prevent mold and odors in the system.
- The evaporators are 100% tested to meet or exceed original equipment specifications. Each part is helium tested to ensure no leaks.
- O-Rings and gaskets necessary for installation are included.
KAI – A/C Orifice Tube (Part No.FJC3114)
from
$1.99
New Standard Replacement A/C Orifice Tube, V8 Engine
Product Features:
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Product Features:
- V8 Engine
- Meets All Federal Motor Safety Standards
- No Drilling Needed For Installation
- No Modifications Needed For Installation
- Direct Fit Replacement For Your Vehicle
- Same Form Fit And Function As OE
- Check Out The Large Selection Of Parts Available For Your Vehicle
Carquest Premium – A/C Orifice Tube – White (Part No.T38623)
from
$3.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
- Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
- Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
- O-Rings necessary for installation are included.
National – Multi-Purpose Bearing (Part No.907257)
from
$53.99
Product Features:
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- BUILT TO LAST: Advanced heat treatment process for strength
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
- RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
ACDelco – Multi-Purpose Pigtail (Part No.PT2834)
from
$39.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
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Product Features:
- Protective outer coverings help provide long-lasting durability
- Color-coded wires allow for easy installation
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Carquest Premium – Multi-Use Connector (Part No.PTA1268)
from
$22.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
Product Features:
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Product Features:
- Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- Product constructed to meet all design and operating characteristics as intended by the manufacturer.
- OE specified wire gauge to ensure a reliable electrical connection
- Designed to meet or exceed OE specifications in form, fit and function
Dorman – 5-Pin Universal Relay, 30 Amp, 12 Volt (Part No.88069)
from
$16.99
Accessory Power Relays use a small current to activate an internal switch that allows a larger current to flow to a particular load. All our Accessory Power Relays are constructed of high quality materials for durability.
Product Features:
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Product Features:
- No special tools required for installation
- Easy to install
- Wiring diagram included
- Manufactured to strict engineering quality standards
Carquest Premium – A/C Compressor Connector (Part No.PTA1641)
from
$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
Product Features:
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Product Features:
- Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- Product constructed to meet all design and operating characteristics as intended by the manufacturer.
Carquest Premium – Multi-Use Connector (Part No.PTA1044)
from
$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
Product Features:
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Product Features:
- Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- Product constructed to meet all design and operating characteristics as intended by the manufacturer.
- Product constructed to meet all design and operating characteristics as intended by the manufacturer.
- OE specified wire gauge to ensure a reliable electrical connection
- Designed to meet or exceed OE specifications in form, fit and function
Carquest Premium – AC Pressure Switch (Part No.ACA1251)
from
$39.99
The Premium CarQuest Vehicle Solutions line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.
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Product Features:
- Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
- Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
- All units are tested using advanced end-of-line equipment that pressurize the A/C Pressure Switch, confirm proper calibration and functionality, and check for leaks to ensure each A/C Pressure Switch meets manufacturing specifications before packaging.
Factory Air – Compressor Mounted High Cut-Out Pressure Switch (Part No.20055)
from
$34.49
High quality OE replacement part with all components needed to complete the job
Product Features:
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Product Features:
- Contains gaskets, o-rings, or seals to properly replace the product
- Color coded for easy identification
- Zinc coated to resist corrosion
- Improved 2 terminal design replacing older 1 terminal switch
- Contains gaskets, o-rings, or seals to properly replace the product
- Color coded for easy identification
- Zinc coated to resist corrosion
- Improved 2 terminal design replacing older 1 terminal switch
Carquest Premium – Multi-Use Connector (Part No.PTA1269)
from
$5.29
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
Product Features:
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Product Features:
- Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
- Product constructed to meet all design and operating characteristics as intended by the manufacturer.
- OE specified wire gauge to ensure a reliable electrical connection
- Designed to meet or exceed OE specifications in form, fit and function
Carquest Premium – A/C O-Ring/Gasket Kit (Part No.T26731)
from
$15.99
Carquest A/C O-Rings and Gaskets are designed for optimal performance to protect your air conditioning parts and systems from unwanted leaks. They are designed to seal each connection with premium quality material and exact measurements.
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Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26730)
from
$9.29
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.
Product Features:
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Product Features:
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- Application specific
- SUV and rear air applications
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- Application specific
- SUV and rear air applications
Popular 1978 Cadillac DeVille Air Conditioning Parts Categories
Most Popular AC Compressor Without Clutch for 1978 Cadillac DeVilles
Enhance your 1978 Cadillac DeVille with one of the 3 AC Compressor Without Clutch we have in stock, starting at just $207.99.
Carquest Standard – Remanufactured GM R4 Heavy Compressor with Clutch (Part No.DW57231)
from
$207.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.
Product Features:
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Product Features:
- Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
- All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
- All units have new seals, O-rings, gaskets and clutch bearings
- Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
- Remanufactured compressors are 100 percent tested to ensure compressor function and noise level meets or exceeds OE specifications
- Remanufactured compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
- Remanufactured compressors are individually vacuum and pressure tested to ensure no leaks
- Remanufactured compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
- Remanufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the Re-manufacturing process
Carquest Premium – A/C Compressor (Part No.T58231)
from
$305.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
- New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
- The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
- All new compressors must pass a helium leak test and pump up function test prior to packaging.
- O-Rings and gaskets necessary for installation are included.
Carquest Standard – Reman GM A6 Compressor w/ Clutch (Part No.DW57096)
from
$366.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.
Product Features:
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Product Features:
- Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
- All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
- All units have new seals, O-rings, gaskets and clutch bearings
- Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
- Remanufactured compressors are 100 percent tested to ensure compressor function and noise level meets or exceeds OE specifications
- Remanufactured compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
- Remanufactured compressors are individually vacuum and pressure tested to ensure no leaks
- Remanufactured compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
- Remanufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the Re-manufacturing process
Best-Selling 1978 Cadillac DeVille Accumulator and Receiver Driers
Upgrade your DeVille with one of our 3 best-selling Accumulator and Receiver Driers, earning an average 4 stars rating across 2 reviews.
Carquest Premium – A/C Accumulator Body (Part No.T33205)
from
$41.49
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.
Product Features:
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Product Features:
- All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
- Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
- All accumulators and receiver driers are helium leak tested prior to packaging.
- O-Rings necessary for installation are included.
Carquest Premium – A/C Accumulator (Part No.T33176)
from
$56.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.
Product Features:
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Product Features:
- All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
- Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
- All accumulators and receiver driers are helium leak tested prior to packaging.
- O-Rings necessary for installation are included.
KAI – A/C Accumulator (Part No.ACM010590)
from
$139.99
New Standard Replacement A/C Accumulator
Product Features:
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Product Features:
- Meets All Federal Motor Safety Standards
- No Drilling Needed For Installation
- No Modifications Needed For Installation
- Direct Fit Replacement For Your Vehicle
- Same Form Fit And Function As OE
- Check Out The Large Selection Of Parts Available For Your Vehicle
Top-Quality Expansion Valve and Orifice Tubes for 1978 Cadillac DeVilles
Choose a high-quality OEM or aftermarket Expansion Valve and Orifice Tube for Cadillac DeVilles and enjoy top-notch performance from $3.99.
Carquest Premium – A/C Orifice Tube – White (Part No.T38623)
from
$3.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
- Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
- Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
- O-Rings necessary for installation are included.
Carquest Premium – A/C Orifice Tube – Automatic Adjusting (Part No.T38904)
from
$21.49
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
- O-Rings necessary for installation are included.
- Color coded
Carquest Premium – A/C Orifice Tube (Part No.T38902)
from
$16.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
- Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
- Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
- O-Rings necessary for installation are included.
Carquest Premium – A/C Orifice Tube – White (Part No.T623)
from
$29.49
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
- Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
- Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
- O-Rings necessary for installation are included.
Top Picks for 1978 Cadillac DeVille AC Compressor With Clutch
Invest in one of our 2 durable AC Compressor With Clutch for your 1978 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.
GM Genuine Parts – Air Conditioning Compressor and Clutch Assembly (Part No.15-20206)
from
$257.99
GM Genuine Parts A/C Compressors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These compressors pump refrigerant through the system. The compressor is typically engine driven via the accessory belt, and a clutch on the compressor is used to engage and disengage the compressor. Hybrid vehicles are typically equipped with an electric motor driven compressor. The compressor is lubricated by refrigerant oil. 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).
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Product Features:
- Visual and leak-tested to help ensure the component’s quality and durability
- The oil separator is part of the compressor and removes oil from the refrigerant to help keep system efficiency
- GM meets an aggressive engineering requirement for compressor clutch durability and corrosion resistance. Together, these help ensure long-term quality and durability
- 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
Carquest Premium – A/C Compressor, New, with Clutch, with A6 Compressor (Part No.T58096)
from
$443.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.
Product Features:
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Product Features:
- Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
- New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
- The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
- All new compressors must pass a helium leak test and pump up function test prior to packaging.
- O-Rings and gaskets necessary for installation are included.
Our AC O-Ring and Gasket Kits for 1978 Cadillac DeVilles
Make a smart move for your 1978 Cadillac DeVille with our AC O-Ring and Gasket Kit for $9.29.
Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26730)
from
$9.29
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.
Product Features:
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Product Features:
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- Application specific
- SUV and rear air applications
- All the seals needed to complete the job
- Compatible with both R12 and R134a refrigerants
- Application specific
- SUV and rear air applications
Top-Rated Air Conditioning Part Brands For Your 1978 Cadillac DeVille
When it comes to finding the perfect Air Conditioning Part for your 1978 Cadillac DeVille, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 9 trusted brands. We carry the most popular Air Conditioning Part brands including , Factory Air, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $3.99. Purchasing a Air Conditioning Part from us here at Advance Auto Parts is a smart move for both you and your 1978 Cadillac DeVille, providing peace of mind with parts that meet or exceed OEM standards.
Popular Carquest Premium 1978 Cadillac DeVille Air Conditioning Parts
If you’re looking for a top-quality Air Conditioning Part for your 1978 Cadillac DeVille, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Air Conditioning Parts. We have 3 Carquest Premium Air Conditioning Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $3.99 and an average cost of $22.32, you’ll find the perfect Air Conditioning Part for your needs and budget. Carquest Premium Air Conditioning Parts for the 1978 Cadillac DeVille come highly rated, with over 196 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Air Conditioning Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$41.49
(2)
A/C Accumulator Body
“82 Chevy Caprice, 5.0, Auto w/AC
This was a perfect fit and a needed replacement part when converting to R134a”
Top-Quality Factory Air 1978 Cadillac DeVille Air Conditioning Parts
For those in search of a high-quality Air Conditioning Part for their 1978 Cadillac DeVille, Advance Auto Parts offers a great selection of Factory Air Air Conditioning Parts. With 2 Factory Air Air Conditioning Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Air Conditioning Parts start at just $20.99, with an average price of $28.99, giving you a range of options to suit your budget. Backed by over 16 customer ratings and an average rating of 4.4 stars, Factory Air Air Conditioning Parts provide both reliability and excellent performance. Choosing a Factory Air Air Conditioning Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
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$36.99
(10)
Compressor Mounted High Cut-Out Pressure Switch
“AC high pressure switch work perfect”
FAQs for 1978 Cadillac DeVille Air Conditioning Parts
What are the best-selling Air Conditioning Parts for 1978 Cadillac DeVilles?
Out of 33 Air Conditioning Parts that fit 1978 Cadillac DeVilles, the following parts are the top sellers:
- Compressor Mounted High Cut-Out Pressure Switch (3880036) – $36.99
- Cap & Valve A/C System Seal Kit (15890308) – $20.99
- Remanufactured GM R4 Heavy Compressor with Clutch (5890802) – $207.99
What’s the price range for 1978 Cadillac DeVille Air Conditioning Parts?
The prices of Air Conditioning Parts for the 1978 Cadillac DeVille range from $1.99 up to $443.99 for the most premium parts.
What is the average price of an Air Conditioning Part for a 1978 Cadillac DeVille?
The average price for Air Conditioning Parts for the 1978 Cadillac DeVille is $75.87. Keep in mind the variety of part types within our Air Conditioning Part category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Air Conditioning Parts for other Cadillac DeVille model years?
What are the cheapest Air Conditioning Parts for my 1978 Cadillac DeVille?
The cheapest 1978 Cadillac DeVille Air Conditioning Parts we carry are:
- Green Round O-Ring (Sold by each) (18890169) – $1.99
- Green Round O-Ring (Sold by each) (18890821) – $1.99
- A/C Orifice Tube – White (10052818) – $3.99
- Multi-Use Connector (12443163) – $5.29
- O-Ring & Gasket A/C System Seal Kit (15890331) – $9.29
Does Advance Auto Parts sell Air Conditioning Parts for any other 1978 Cadillac models?
Yes. We stock Air Conditioning Parts for 3 other popular 1978 Cadillac models. Some of the most popular are 1978 Seville Air Conditioning Parts, 1978 Fleetwood Air Conditioning Parts, and 1978 Commercial Chassis Air Conditioning Parts.
What are the top-rated Air Conditioning Parts that fit the 1978 Cadillac DeVille?
Based on 528 reviews by customers, our 1978 Cadillac DeVille Air Conditioning Parts have an average customer rating of 3 stars. These are the highest-rated categories of Air Conditioning Parts for the 1978 Cadillac DeVille and their top-rated products:
- AC Compressor Clutch Relay
- 5-Pin Universal Relay, 30 Amp, 12 Volt (11223721) – $16.99
- AC High Pressure Side Switches
- Compressor Mounted High Cut-Out Pressure Switch (3880036) – $36.99
What types of Air Conditioning Parts do you sell for my 1978 Cadillac DeVille?
As of 3/1/26, these are some of the most in-demand types of Air Conditioning Parts for a 1978 Cadillac DeVille:
Can I get help with 1978 Cadillac DeVille Air Conditioning Part orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Air Conditioning Parts and more.
What is your return policy for Cadillac DeVille Air Conditioning Parts?
Advance Auto Parts keeps returns simple. For new Cadillac DeVille Air Conditioning Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.