1978 Pontiac LeMans Air Conditioning Parts

Name: Green Round O-Ring (Sold by each)
Brand: Factory Air
SKU: 24615
Price: 1.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1978 Pontiac LeMans 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 Pontiac LeMans 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 . For example, Factory Air Air Conditioning Parts start at just $4.29 with an average 4.4 star rating. offer similar pricing and quality, backed by strong customer feedback. With over 1,359 reviews and a solid 3 star average, you can shop with confidence knowing other Pontiac LeMans owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Pontiac LeMans Air Conditioning Part at Advance Auto Parts is around $74.52, with a range that starts at $1.99 and goes up to $443.99. With 43 options in stock from 10 trusted brands, finding the right fit is easy. Popular picks like Remanufactured GM R4 Heavy Compressor with Clutch, 5-Wire Style Relay, and Compressor Mounted Low Cut-Out Pressure Switch start at just $18.99 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 Engine Cooling Parts and Heating Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Pontiac LeMans in peak condition, inside and out.

Essential 1978 Pontiac LeMans Air Conditioning Parts

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$1.99

Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications

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$159.99

The Carquest condenser is an integral component of the motor vehicle air conditioning system. This part condenses the refrigerant into a liquid to prepare it for entry into the compressor. The condenser is manufactured according to OEM design specifications to ensure a long life with quality performance. Exact design standards produce a seamless fit into the engine compartment.

Product Features:

This is a parallel flow condenser that contains small micro-channels. It is highly recommended that this condenser be replaced if a failure has occurred in the vehicle’s air conditioning system that has resulted in debris contaminating the system.
The Carquest condenser production process includes quality driven details such as using zinc-coated tubes and electrostatic paint spray at high temperatures to provide the best corrosion resistance and durability in our condensers.
Continuous molds, laser welding machines, semi-automatic assembly stations and other advanced equipment provide quality products.
Each condenser uses only the highest quality raw materials including pure aluminum (not substandard or recycled) to provide the highest quality standards from beginning to finished product.
All brackets are designed per OEM specifications to ensure strength and reduce vibration and movement.
We leak test 100% of our condensers in helium leak test chambers to ensure the product does not leak.
Our condensers are manufactured from rigid design standards to fit OEM dimensions.
Each condenser design endures a series of tests that includes performance testing, vibration testing, blast testing, and salt spray testing to simulate real world conditions.
Each Carquest condenser is packaged using superior box construction. This box is easy to open and seal. Each condenser is packaged in the box with internal protection to keep the part centered and away from the package edges.

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$20.99

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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$57.99

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The HVAC Panel Switch provides intuitive control over the vehicle’s heating, ventilation, and air conditioning systems, enhancing comfort for passengers by allowing easy adjustments to temperature and airflow according to individual preferences. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

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$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:

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

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$109.99

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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$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:

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

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$4.29

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

Product Features:

Quality connectors ensure proper conductivity
Zinc coated to resist corrosion
Plastic injected molded case
One way fit connection

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$89.99

Carquest Hose Assemblies are designed to carry refrigerant in an air conditioning system. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:

100% of hose assemblies use Goodyear hoses that meet original equipment specifications for wall thickness and permeation.
Tubes and mufflers are designed to meet original equipment specifications for wall thickness.
Fittings are designed to couple and seal to eliminate leaks. Trivalent plating is used on steel fittings to enhance corrosion resistance. The fittings conform to original equipment specifications to allow for the proper fit with related A/C components.
Welds and crimps meet and exceed original equipment tension specifications.
Manufactured to allow flexibility in the hose to conform to engine compartments.
O-Rings necessary for installation are included.

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$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:

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.

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$54.99

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:

Radial Ball Bearing, Both Sides Shield.
Coverage of classic and new high-tech solutions for the best system coverage

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$20.99

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

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$21.99

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

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$12.49

Product Features:

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

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$39.99

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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$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
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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$53.99

Product Features:

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

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$272.99

Manufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the manufacturing process.

Product Features:

New, with Clutch, with R4 Heavy Compressor
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.
Manufactured Compressors meet or exceed OE specifications
Manufactured Compressors are validated for the equivalent of 100,000 miles
Manufactured Compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
Manufactured Compressors are individually vacuum, pressure, and Helium Mass Spectrometer tested to ensure no leaks
Manufactured Compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor

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$20.79

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$30.99

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The HVAC Pressure Sensor/Switch monitors the refrigerant pressure within the air conditioning system, ensuring optimal performance and preventing potential system damage, which enhances climate control and passenger comfort. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

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$15.99

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.
O-Rings necessary for installation are included.

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$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:

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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$22.99

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

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$18.99

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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$50.99

Product Features:

Chrome Plated
Show Quality
For Custom Installations

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$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 AC 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 AC 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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$20.99

The Carquest Premium 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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$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.

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.

Popular 1978 Pontiac LeMans Air Conditioning Parts Categories

AC Compressor With Clutch

AC Compressor Without Clutch

AC Harness Connectors

AC Condensers

AC Line O-Rings

AC Evaporators

AC Caps and Valve Core Kits

AC Liquid Lines

AC Relay Connectors

AC Compressor Cut-Out Relay Harness Connectors

Accumulator and Receiver Driers

AC Clutch Bearings

AC O-Ring and Gasket Kits

Expansion Valve and Orifice Tubes

AC High Pressure Side Switches

AC Compressor Cut-Off Switches

AC Switch Connectors

AC Compressor Pressure Switches

AC Control Switches

AC Condenser Fan Switch Harness Connectors

AC Bearings

AC Compressor Mount Brackets

AC Accumulator Tubes

AC Compressor Thrust Bearings

AC Compressor Seals

AC Thermal Limit Switches

Most Popular AC Compressor Without Clutch for 1978 Pontiac LeMans

Enhance your 1978 Pontiac LeMans with one of the 3 AC Compressor Without Clutch we have in stock, starting at just $207.99.

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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:

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

from

$305.99

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.

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:

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 Pontiac LeMans AC Condensers

Upgrade your LeMans with one of our 4 best-selling AC Condensers, earning an average 3 stars rating across 4 reviews.

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$159.99

This is a parallel flow condenser that contains small micro-channels. It is highly recommended that this condenser be replaced if a failure has occurred in the vehicle’s air conditioning system that has resulted in debris contaminating the system.
The Carquest condenser production process includes quality driven details such as using zinc-coated tubes and electrostatic paint spray at high temperatures to provide the best corrosion resistance and durability in our condensers.
Continuous molds, laser welding machines, semi-automatic assembly stations and other advanced equipment provide quality products.
Each condenser uses only the highest quality raw materials including pure aluminum (not substandard or recycled) to provide the highest quality standards from beginning to finished product.
All brackets are designed per OEM specifications to ensure strength and reduce vibration and movement.
We leak test 100% of our condensers in helium leak test chambers to ensure the product does not leak.
Our condensers are manufactured from rigid design standards to fit OEM dimensions.
Each condenser design endures a series of tests that includes performance testing, vibration testing, blast testing, and salt spray testing to simulate real world conditions.
Each Carquest condenser is packaged using superior box construction. This box is easy to open and seal. Each condenser is packaged in the box with internal protection to keep the part centered and away from the package edges.

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$144.99

This is a parallel flow condenser that contains small micro-channels. It is highly recommended that this condenser be replaced if a failure has occurred in the vehicle’s air conditioning system that has resulted in debris contaminating the system.
The Carquest condenser production process includes quality driven details such as using zinc-coated tubes and electrostatic paint spray at high temperatures to provide the best corrosion resistance and durability in our condensers.
Continuous molds, laser welding machines, semi-automatic assembly stations and other advanced equipment provide quality products.
Each condenser uses only the highest quality raw materials including pure aluminum (not substandard or recycled) to provide the highest quality standards from beginning to finished product.
All brackets are designed per OEM specifications to ensure strength and reduce vibration and movement.
We leak test 100% of our condensers in helium leak test chambers to ensure the product does not leak.
Our condensers are manufactured from rigid design standards to fit OEM dimensions.
Each condenser design endures a series of tests that includes performance testing, vibration testing, blast testing, and salt spray testing to simulate real world conditions.
Each Carquest condenser is packaged using superior box construction. This box is easy to open and seal. Each condenser is packaged in the box with internal protection to keep the part centered and away from the package edges.

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$206.99

New Platinum Pro A/C Condenser, Fits Models Equipped With Chevrolet Engines

Product Features:

Fits Models Equipped With Chevrolet Engines, Made Of Aluminum
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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$188.99

New Platinum Pro A/C Condenser, 26 1/2 Inch H X 14 3/16 Inch W

Product Features:

26 1/2 Inch H X 14 3/16 Inch W, Made Of Aluminum
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 AC Compressor With Clutch for 1978 Pontiac LeMans

Choose a high-quality OEM or aftermarket AC Compressor With Clutch for Pontiac LeMans and enjoy top-notch performance from $257.99.

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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).

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

from

$443.99

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.

Top Picks for 1978 Pontiac LeMans Expansion Valve and Orifice Tubes

Invest in one of our 4 durable Expansion Valve and Orifice Tubes for your 1978 Pontiac, knowing you’re getting trusted brands and expert craftsmanship.

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from

$3.99

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.

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$21.49

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

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$16.99

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.

from

$29.49

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-Rated Accumulator and Receiver Driers for 1978 Pontiac LeMans

Make a smart move for your 1978 Pontiac LeMans with products all priced from $41.49 to $139.99.

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from

$41.49

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.

from

$56.99

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.

from

$139.99

New Standard Replacement A/C Accumulator

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-Rated Air Conditioning Part Brands For Your 1978 Pontiac LeMans

When it comes to finding the perfect Air Conditioning Part for your 1978 Pontiac LeMans, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 10 trusted brands. We carry the most popular Air Conditioning Part brands including Factory Air and , 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 Pontiac LeMans, providing peace of mind with parts that meet or exceed OEM standards.

Popular Factory Air 1978 Pontiac LeMans Air Conditioning Parts

If you’re looking for a top-quality Air Conditioning Part for your 1978 Pontiac LeMans, Advance Auto Parts has exactly what you need with our selection of Factory Air Air Conditioning Parts. We have 3 Factory Air Air Conditioning Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $4.29 and an average cost of $20.76, you’ll find the perfect Air Conditioning Part for your needs and budget. Factory Air Air Conditioning Parts for the 1978 Pontiac LeMans come highly rated, with over 17 customer reviews and an impressive average rating of 4.4 stars. Choosing a Factory Air Air Conditioning Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $36.99

(10)

Compressor Mounted High Cut-Out Pressure Switch

“AC high pressure switch work perfect”

from $20.99

(6)

Cap & Valve A/C System Seal Kit

“Good product and price.”

from $4.29

(1)

Thermal Limiter Fuse Switch

“I found the only one in Orlando, installed and now enjoying my A/C”

Top-Quality Carquest Premium 1978 Pontiac LeMans Air Conditioning Parts

For those in search of a high-quality Air Conditioning Part for their 1978 Pontiac LeMans, Advance Auto Parts offers a great selection of Air Conditioning Parts. With 3 Carquest Premium 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 $3.99, with an average price of $22.32, giving you a range of options to suit your budget. Backed by over 196 customer ratings and an average rating of 4.4 stars, Carquest Premium Air Conditioning Parts provide both reliability and excellent performance. Choosing a Carquest Premium Air Conditioning Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $21.49

(97)

A/C Orifice Tube – Automatic Adjusting

“Good item”

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”

from $3.99

(97)

A/C Orifice Tube – White

“good product.”

FAQs for 1978 Pontiac LeMans Air Conditioning Parts

What are the best-selling Air Conditioning Parts for 1978 Pontiac LeMans?

Out of 43 Air Conditioning Parts that fit 1978 Pontiac LeMans, the following parts are the top sellers:

Remanufactured GM R4 Heavy Compressor with Clutch (5890802) – $207.99
5-Wire Style Relay (22148718) – $18.99
Compressor Mounted Low Cut-Out Pressure Switch (3880028) – $31.49

What’s the price range for 1978 Pontiac LeMans Air Conditioning Parts?

The prices of Air Conditioning Parts for the 1978 Pontiac LeMans 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 Pontiac LeMans?

The average price for Air Conditioning Parts for the 1978 Pontiac LeMans is $74.52. 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 Pontiac LeMans model years?

Yes, we carry Air Conditioning Parts for 23 model years of Pontiac LeMans between 1963 and 1993. The following model years are the most popular for Air Conditioning Part purchases: 1993, 1992, 1991, 1990, 1989, 1981, 1979, 1976, and 1974.

What are the cheapest Air Conditioning Parts for my 1978 Pontiac LeMans?

The cheapest 1978 Pontiac LeMans 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
Thermal Limiter Fuse Switch (5899168) – $4.29
Multi-Use Connector (12443163) – $5.29

Does Advance Auto Parts sell Air Conditioning Parts for any other 1978 Pontiac models?

Yes. We stock Air Conditioning Parts for 8 other popular 1978 Pontiac models. Some of the most popular are 1978 Grand Prix Air Conditioning Parts, 1978 Bonneville Air Conditioning Parts, 1978 Grand Am Air Conditioning Parts, 1978 Sunbird Air Conditioning Parts, and 1978 Phoenix Air Conditioning Parts.

What are the top-rated Air Conditioning Parts that fit the 1978 Pontiac LeMans?

Based on 1,359 reviews by customers, our 1978 Pontiac LeMans Air Conditioning Parts have an average customer rating of 3 stars. These are the highest-rated categories of Air Conditioning Parts for the 1978 Pontiac LeMans and their top-rated products:

AC Thermal Limit Switches
- Thermal Limiter Fuse Switch (5899168) – $4.29
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 Pontiac LeMans?

As of 3/1/26, these are some of the most in-demand types of Air Conditioning Parts for a 1978 Pontiac LeMans:

Can I get help with 1978 Pontiac LeMans 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 Pontiac Air Conditioning Parts and more.

What is your return policy for Pontiac LeMans Air Conditioning Parts?

Advance Auto Parts keeps returns simple. For new Pontiac LeMans Air Conditioning Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1978 Pontiac LeMans Air Conditioning Parts

Factory Air – Green Round O-Ring (Sold by each) (Part No.24615)

Carquest Premium – A/C Condenser (Part No.2034)

Carquest Premium – A/C Valve Core/Cap (Part No.T26777)

Carquest Premium – HVAC Control Switch (Part No.HKA1014)

Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26730)

Carquest Premium – A/C Evaporator Core (Part No.T54277)

Carquest Premium – Multi-Use Connector (Part No.PTA1269)

Factory Air – Thermal Limiter Fuse Switch (Part No.35759)

Carquest Premium – A/C Refrigerant Discharge / Suction Hose Assembly (Part No.T55061)

Carquest Premium – A/C Orifice Tube – White (Part No.T623)

Schaeffler – Bearing – DGBB (Deep Groove Ball Bearing) (Part No.5908-VAW)

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

Carquest Premium – Multi-Use Connector (Part No.PTA1328)

National – Multi-Purpose Bearing (Part No.S-128)

Carquest Premium – A/C Accumulator (Part No.T33185)

Factory Air – Compressor Mounted Low Cut-Out Pressure Switch (Part No.35973)

National – Multi-Purpose Bearing (Part No.907257)

Carquest Premium – New GM R4 Heavy Compressor with Clutch (Part No.T58223)

Carquest Premium – A/C Compressor Wiring Harness (Part No.T37201)

Carquest Premium – A/C Compressor Cut-Out Switch (Part No.ACA1257)

Carquest Premium – A/C Accumulator Tube Outlet (Part No.T34210)

Carquest Premium – A/C Compressor (Part No.T58231)

Carquest Premium – Multi-Use Connector (Part No.PTA1329)

Dorman – 5-Wire Style Relay (Part No.85170)

Flowtech – A/C Bracket (Part No.10042FLT)

GM Genuine Parts – Air Conditioning Refrigerant Pressure Switch (Part No.15-50812)

Carquest Premium – HVAC Pressure Switch (Part No.ACA1315)

Carquest Premium – AC Pressure Switch (Part No.ACA1251)

Carquest Standard – Remanufactured GM R4 Heavy Compressor with Clutch (Part No.DW57231)

Carquest Premium – A/C Compressor (Part No.T58231)

Carquest Standard – Reman GM A6 Compressor w/ Clutch (Part No.DW57096)

Carquest Premium – A/C Condenser (Part No.2034)

Carquest Premium – A/C Condenser (Part No.2035)

KAI – A/C Condenser (Part No.CND32320)

KAI – A/C Condenser (Part No.CND32322)

GM Genuine Parts – Air Conditioning Compressor and Clutch Assembly (Part No.15-20206)

Carquest Premium – A/C Compressor, New, with Clutch, with A6 Compressor (Part No.T58096)

Carquest Premium – A/C Orifice Tube – White (Part No.T38623)

Carquest Premium – A/C Orifice Tube – Automatic Adjusting (Part No.T38904)

Carquest Premium – A/C Orifice Tube (Part No.T38902)

Carquest Premium – A/C Orifice Tube – White (Part No.T623)

Carquest Premium – A/C Accumulator Body (Part No.T33205)

Carquest Premium – A/C Accumulator (Part No.T33176)

KAI – A/C Accumulator (Part No.ACM010590)