1978 Chevrolet G20 Air Conditioning Parts

Essential 1978 Chevrolet G20 Air Conditioning Parts

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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National – Bearings (Part No.S-128)

Bearings

from

$9.49
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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ACDelco – A/C Compressor Clutch (Part No.R1010601780ACD)

A/C Compressor Clutch

from

$279.71
ACDelco GM Original Equipment A/C Compressor Clutch Kits include the compressor clutch, which engages and disengages the compressor when the A/C is switched ON and Off, and other related components. This original equipment A/C compressor clutch kit is a GM-recommended replacement for you vehicle’s original components and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Restore A/C compressor clutch to like new performance
  • 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
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ACDelco – 2-Way Male Black Multi-Purpose Pigtail (Part No.PT786)

2-Way Male Black Multi-Purpose Pigtail

from

$40.99
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:
  • 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
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Carquest Premium – A/C White Orifice Tube (10 pkg) (Part No.T623)

A/C White Orifice Tube (10 pkg)

from

$24.49
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:
  • 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.
  • O-Rings necessary for installation are included.
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Carquest Premium – HVAC Control Switch (Part No.HKA1014)

HVAC Control Switch

from

$36.49
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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Dorman – 2-Wire A/C High Pressure Switch (Part No.85147)

2-Wire A/C High Pressure Switch

from

$34.49
This HVAC switch 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 switch 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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GM Genuine Parts – Air Conditioning Clutch Cycling Switch (Part No.15-2151)

Air Conditioning Clutch Cycling Switch

from

$42.99
GM Genuine Parts A/C Clutch Cycle Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These A/C clutch cycle switches are component sensors that monitor the evaporator temperature and pressure. The switch turns the compressor clutch field coil off and on. When the pressure and temperature are too low, the compressor is switched off. 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 compressor clutch function
  • 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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Carquest Premium – Multi Purpose Relay (Part No.RAC1268)

Multi Purpose Relay

from

$19.49
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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Carquest Premium – A/C Accumulator Tube (Part No.T34207)

A/C Accumulator Tube

from

$10.79
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 Clutch Cycle Switch (Part No.ACA1542)

A/C Clutch Cycle Switch

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.
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ACDelco – A/C Pressure Switch (Part No.R1054321623ACD)

A/C Pressure Switch

from

$105.26
ACDelco is a global leader in automotive replacement parts and related services and offers quality aftermarket products for most makes and models, including General Motors, Ford, Chrysler, Toyota and Honda. ACDelco has over 100 years of experience in the automotive industry and is a brand of GM Customer Care and After sales, a division of General Motors.
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FAG US – BEARING (Part No.5908-VAW)

BEARING

from

$54.99
BEARING

Carquest Premium – New Compressor with Clutch, GM R4 Lightweight (Part No.T58240)

New Compressor with Clutch, GM R4 Lightweight

from

$307.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • All compressors go through sophisticated testing and leak test processes
  • Includes specific electrical connector to eliminate splicing
  • For ease of installation this compressor includes all gaskets, O-rings or sealing washers needed to repair your car
  • Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function, and durability
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Carquest Standard – Reman GM A6 Compressor w/ Clutch (Part No.DW57087)

Reman GM A6 Compressor w/ Clutch

from

$303.99
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 Tank (Part No.T33204)

A/C Accumulator Tank

from

$30.49
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 Filter Drier (Part No.T33211)

A/C Filter Drier

from

$22.99
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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Factory Air – Sealing Washer Kit (Part No.24338)

Sealing Washer Kit

from

$5.29
Includes O-Ring; Compatible with R12 And R134A; High quality construction; Universal applications
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GM Genuine Parts – Air Conditioning Refrigerant Pressure Switch (Part No.15-50812)

Air Conditioning Refrigerant Pressure Switch

from

$59.99
GM Genuine Parts HVAC Pressure Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These HVAC pressure switches are a system protective switch that cuts off power to A/C components if the pressure in the system is too low. 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:
  • Protective switch that discontinues power to A/C components when system pressures are too low
  • 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 – Compressor Mounted High Cut-Out Pressure Switch (Part No.35961)

Compressor Mounted High Cut-Out Pressure Switch

from

$36.99
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 – O-Ring & Gasket A/C System Seal Kit (Part No.26741)

O-Ring & Gasket A/C System Seal Kit

from

$15.49
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 – Cap & Valve A/C System Seal Kit (Part No.26777)

Cap & Valve A/C System Seal Kit

from

$16.99
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
  • SUV and rear air applications
  • Application specific
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Carquest Premium – A/C Harness Connector (Part No.T37201)

A/C Harness Connector

from

$16.79
Carquest A/C Accessories provide a comprehensive offering of premium quality fittings and tools to service all aspects of an a/c service from the most simple fitting replacement to complex diagnostics required for late model applications.
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Carquest Premium – A/C Compressor Clutch Connector (Part No.PTA1658)

A/C Compressor Clutch Connector

from

$11.99
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
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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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Carquest Premium – A/C New, with Clutch, with R4 Lightweight Compressor (Part No.T58937)

A/C New, with Clutch, with R4 Lightweight Compressor

from

$261.99
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.
  • Matched high-quality needle-roller bearing ensures low friction and high load capability.
  • Light weight aluminum energy-saving casting used for construction.
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KAI – A/C Compressor, Gm, R4, 6 Groove (Part No.ACP010027)

A/C Compressor, Gm, R4, 6 Groove

from

$523.99
New Standard Replacement A/C Compressor, GM, R4, 6 Groove

Product Features:
  • GM, R4, 6 Groove
  • 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
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Carquest Premium – A/C New, with Clutch, with R4 Heavy Compressor (Part No.T58231)

A/C New, with Clutch, with R4 Heavy Compressor

from

$274.99
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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1978 Chevrolet G20 Air Conditioning Parts

Maybe you’re in the middle of a full rebuild of that 1978 Chevrolet G20. Maybe you just need a couple of Air Conditioning Parts. Either way, Advance Auto Parts has 42 different Air Conditioning Parts in our inventory ranging from $1.99 to $478.99. That means you can find the exact parts or products you need to keep that 1978 Chevrolet G20 running smoothly.

Air Conditioning Parts are only as good as their brand. We stock 10 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Chevrolet G20. Carquest Premium, Factory Air, and Carquest 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 Chevrolet G20, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 2,484 reviews in this category, some of the top rated parts include A/C Filter Drier with 4.5 stars and Ball Bearing with 2.3 stars.

So if you’re in the market for aftermarket Air Conditioning Parts to keep your 1978 Chevrolet G20 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 Chevrolet G20 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Chevrolet G20 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 G20 the best it can be. Be sure to browse some of our top Air Conditioning Parts brands and parts.

Popular ACDelco Air Conditioning Parts

We carry ACDelco parts in our stock across Expansion Valve and Orifice Tubes categories, plus more. For a 1978 Chevrolet G20, our most popular ACDelco Air Conditioning Parts include:
Air Conditioning Orifice Tube
from $5.79
(2)
Air Conditioning Orifice Tube
Expansion Valve and Orifice Tubes

Top 1978 Chevrolet G20 Air Conditioning Parts from Carquest Premium

Carquest Premium products are another trusted brand when it comes to Air Conditioning Parts for your 1978 Chevrolet G20. Popular Carquest Premium parts include:
A/C White Orifice Tube
from $2.99
(97)
A/C White Orifice Tube
Expansion Valve and Orifice Tubes
A/C Severe Temp Automatic Adjusting Orifice Tube
from $15.99
(97)
A/C 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 Chevrolet G20 Air Conditioning Parts

What are the most purchased Air Conditioning Parts for the 1978 Chevrolet G20?

Out of 42 Air Conditioning Parts for the 1978 Chevrolet G20, the most popular in our inventory are:
A/C New, with Clutch, with R4 Lightweight Compressor
from $261.99
(10)
A/C New, with Clutch, with R4 Lightweight Compressor
AC Compressor With 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 Chevrolet G20 Air Conditioning Parts?

Top-rated Air Conditioning Parts for your 1978 Chevrolet G20 based on customer reviews/ratings are:
A/C Filter Drier
from $22.99
(4)
A/C Filter Drier
“Exact fit for my needs.”
Ball Bearing
from $22.29
(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!”