1978 Cadillac DeVille Air Conditioning Parts

Essential 1978 Cadillac DeVille Air Conditioning Parts

Carquest Premium – A/C Compressor Switch Connector (Part No.PTA1328)

A/C Compressor Switch Connector

from

$15.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • 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
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National – Bearings (Part No.S-128)

Bearings

from

$11.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Available in both caged design and full complement
  • Industry leading coverage
  • Professional technicians know they can depend on National
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GM Genuine Parts – Air Conditioning Orifice Tube (Part No.15-5151)

Air Conditioning Orifice Tube

from

$11.99
GM Genuine Parts A/C Orifice Tubes are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These tubes, which separate the high and low pressure sides of the air conditioning system, control the flow of low pressure liquid refrigerant into the evaporator. The orifice tube is essentially a calibrated restriction located at the inlet to the evaporator. This causes the necessary pressure drop to allow the liquid refrigerant to evaporate within the evaporator and absorb heat. Since the orifice tube is fixed, the system is regulated by either cycling the compressor clutch or by a variable displacement compressor. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Restores A/C performance due to restricted orifice tubes
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems — aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Factory Air – Evaporator Core Repair Kit w/ White Orifice Tube (Part No.16152)

Evaporator Core Repair Kit w/ White Orifice Tube

from

$18.29
Optimized refrigerant flow; Core design meets or exceeds OE performance And efficiency; Application specific design for GM vehicles; Replaces damaged evaporator inlet tube
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GM Genuine Parts – Multi-Purpose Relay (Part No.15-81106)

Multi-Purpose Relay

from

$32.99
GM Genuine Parts Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays help connect or disconnect power to a vehicle accessory when it receives a low voltage signal from a switch. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Helps connect or disconnect power to vehicle accessories
  • 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
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Carquest Premium – A/C Accumulator Tube (Part No.T34208)

A/C Accumulator Tube

from

$9.49
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:
  • 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.
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Carquest Premium – A/C Compressor Switch Connector (Part No.PTA1329)

A/C Compressor Switch Connector

from

$17.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • 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
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Factory Air – New GM Harrison DA6-HR6-HD6-HT6+HE6 Clutch Assembly w/ Coil (Part No.47667)

New GM Harrison DA6-HR6-HD6-HT6+HE6 Clutch Assembly w/ Coil

from

$182.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • All mounting hardware included
  • Every coil tested for proper ohms
  • Vehicle specific applications
  • Coated to prevent corrosion
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Carquest Premium – AC Pressure Switch (Part No.ACA1334)

AC Pressure Switch

from

$32.99
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.

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.
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Factory Air – Green Round O-Ring (Part No.24650)

Green Round O-Ring

from

$1.99
Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications
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Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26731)

O-Ring & Gasket A/C System Seal Kit

from

$11.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • All the seals needed to complete the job
  • Compatible with both R12 and R134a refrigerants
  • Application specific
  • SUV and rear air applications
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Factory Air – Sealing Washer Kit (Part No.24340)

Sealing Washer Kit

from

$9.49
Includes O-Ring; Compatible with R12 And R134A; High quality construction; Universal applications
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Carquest Premium – A/C Plate and Fin Evaporator (Part No.T54432)

A/C Plate and Fin Evaporator

from

$102.99
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:
  • 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.
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Carquest Premium – A/C Plate and Fin Evaporator (Part No.T54474)

A/C Plate and Fin Evaporator

from

$104.99
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:
  • 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.
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Driveworks – Ball Bearing (Part No.S-907257)

Ball Bearing

from

$20.79
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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National – Bearings (Part No.SCE-108)

Bearings

from

$6.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Available in both caged design and full complement
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Factory Air – System Mounted Preset Cycling Temperature Switch (Part No.35720)

System Mounted Preset Cycling Temperature Switch

from

$18.05
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Contains gaskets, O-rings, or seals to properly replace the product
  • Precision engineered
  • OE style connectors
  • Quality contacts ensure proper conductivity
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Carquest Premium – HVAC Cut-Off Switch (Part No.ACE1266)

HVAC Cut-Off Switch

from

$23.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Factory Air – Compressor Mounted Low Cut-Out Pressure Switch (Part No.35973)

Compressor Mounted Low Cut-Out Pressure Switch

from

$31.49
High quality OE replacement part with all components needed to complete the job

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
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Factory Air – Compressor Mounted High Cut-Out Pressure Switch (Part No.20055)

Compressor Mounted High Cut-Out Pressure Switch

from

$34.49
High quality OE replacement part with all components needed to complete the job

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
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Factory Air – Harness Connector (Part No.37215)

Harness Connector

from

$15.79
OE style connectors; Molded plastic construction; Quality contacts ensure proper conductivity; Universal applications
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Factory Air – Harness Connector (Part No.37201)

Harness Connector

from

$17.49
OE style connectors; Molded plastic construction; Quality contacts ensure proper conductivity; Universal applications
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Carquest Premium – A/C New; w/ Clutch; w/ A6 Compressor (Part No.T58096)

A/C New; w/ Clutch; w/ A6 Compressor

from

$408.99
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:
  • 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.
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Carquest Standard – Reman GM A6 Compressor w/ Clutch (Part No.DW57088)

Reman GM A6 Compressor w/ Clutch

from

$286.99
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:
  • 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
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Carquest Premium – A/C Accumulator (Part No.T33197)

A/C Accumulator

from

$26.99
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:
  • 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.
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ACDelco – GM Original Equipment Air Conditioning Accumulators/Drier (Part No.R1040397903ACD)

GM Original Equipment Air Conditioning Accumulators/Drier

from

$42.62
ACDelco GM Original Equipment A/C Accumulators are used in A/C systems with an orifice tube metering device. The accumulator is located between the evaporator and the compressor, and serves to capture and store excess liquid refrigerant. This prevents liquid refrigerant from entering the compressor where it can damage the compressor. This GM Original Equipment A/C Accumulator is a GM-recommended replacement component and has been manufactured to fit your specific GM vehicle and provide the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Removes harmful moisture from the A/C refrigerant system
  • 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 Installation Note: Receiver driers or accumulators, and expansion devices should be replaced any time an A/C system is opened. Individual A/C component warranties may be void if these items are not replaced.
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Dorman – 5-Wire Style Relay (Part No.85170)

5-Wire Style Relay

from

$15.99
This HVAC relay connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this HVAC relay connector matches the appearance and function of the factory hardware on specified applications
  • Ideal solution – this connector is a reliable replacement for an original part that is missing 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
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Carquest Premium – HVAC Power Servo Connector (Part No.PTA1912)

HVAC Power Servo Connector

from

$4.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • 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
See More

1978 Cadillac DeVille Air Conditioning Parts

Maybe you’re in the middle of a full rebuild of that 1978 Cadillac DeVille. Maybe you just need a couple of Air Conditioning Parts. Either way, Advance Auto Parts has 45 different Air Conditioning Parts in our inventory ranging from $1.99 to $408.99. That means you can find the exact parts or products you need to keep that 1978 Cadillac DeVille running smoothly.

Air Conditioning Parts are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Cadillac DeVille. Carquest Premium, Dorman, and Factory Air are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Air Conditioning Parts for your 1978 Cadillac DeVille, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 562 reviews in this category, some of the top rated parts include Ball Bearing with 2.3 stars and Reman GM R4 Heavy Compressor w/ Clutch with 2.0 stars.

So if you’re in the market for aftermarket Air Conditioning Parts to keep your 1978 Cadillac DeVille rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Air Conditioning Parts Brands To Make Your 1978 Cadillac DeVille Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Cadillac DeVille demands trusted brand parts and products to keep it running. Many trusted brands of Air Conditioning Parts make up Advance Auto Parts’ inventory, and all are ready to help make your DeVille the best it can be. Be sure to browse some of our top Air Conditioning Parts brands and parts.

Popular Dorman Air Conditioning Parts

We carry Dorman parts in our stock across Air Conditioning Relays categories, plus more. For a 1978 Cadillac DeVille, our most popular Dorman Air Conditioning Parts include:
30 AMP 12 Volt 5 Pin Universal Relay
from $14.99
(10)
30 AMP 12 Volt 5 Pin Universal Relay
Air Conditioning Relays

Top 1978 Cadillac DeVille Air Conditioning Parts from Carquest Premium

Carquest Premium products are another trusted brand when it comes to Air Conditioning Parts for your 1978 Cadillac DeVille. Popular Carquest Premium parts include:
A/C White Orifice Tube
from $2.99
(97)
A/C White Orifice Tube
Expansion Valve and Orifice Tubes
Severe Temp Automatic Adjusting Orifice Tube
from $15.99
(97)
Severe Temp Automatic Adjusting Orifice Tube
Expansion Valve and Orifice Tubes
A/C Standard Temp Automatic Adjusting Orifice Tube
from $15.79
(28)
A/C Standard Temp Automatic Adjusting Orifice Tube
Expansion Valve and Orifice Tubes

FAQs for 1978 Cadillac DeVille Air Conditioning Parts

What are the most purchased Air Conditioning Parts for the 1978 Cadillac DeVille?

Out of 45 Air Conditioning Parts for the 1978 Cadillac DeVille, the most popular in our inventory are:
A/C New; w/ Clutch; w/ R4 Lightweight Compressor
from $261.99
(10)
A/C New; w/ Clutch; w/ R4 Lightweight Compressor
AC Compressor Without Clutch
Compressor Mounted High Cut-Out Pressure Switch
from $36.99
(10)
Compressor Mounted High Cut-Out Pressure Switch
AC High Pressure Side Switches
Cap & Valve A/C System Seal Kit
from $16.99
(6)
Cap & Valve A/C System Seal Kit
AC Line O-Rings

What are the top-rated 1978 Cadillac DeVille Air Conditioning Parts?

Top-rated Air Conditioning Parts for your 1978 Cadillac DeVille based on customer reviews/ratings are:
Ball Bearing
from $20.79
(4)
Ball Bearing
“Great replacement bearing”
Reman GM R4 Heavy Compressor w/ Clutch
from $195.99
(4)
Reman GM R4 Heavy Compressor w/ Clutch
“Very good compressor for the money!”
A/C New; w/ Clutch; w/ R4 Heavy Compressor
from $274.99
(3)
A/C New; w/ Clutch; w/ R4 Heavy Compressor
“Be aware this is a new different design not for a rear mount design on a 1981 corvette the back has a valve on the compressor that blocks the rear bra”