Peterbilt 378 Air Conditioning Parts

Your One-Stop Shop For Trusted Peterbilt 378 Air Conditioning Parts

If you’re in search of Peterbilt 378 Air Conditioning Parts aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 32 Air Conditioning Parts from top brands with prices ranging from $5.99 to $719.99.

Beyond great prices, we stock trusted brands manufacturing all types of Air Conditioning Parts for your Peterbilt 378.

And don’t forget to read customer reviews across all Air Conditioning Parts categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Air Conditioning Parts have to cost top dollar, and we prove it. Browse our top Peterbilt 378 Air Conditioning Parts below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

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Essential Peterbilt 378 Air Conditioning Parts

Carquest Premium – Carquest A/C Receiver Drier, T33476 (Part No.T33476)

Carquest A/C Receiver Drier, T33476

from

$43.99
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.
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Carquest Premium – Carquest A/C Accumulator, T33221 (Part No.T33221)

Carquest A/C Accumulator, T33221

from

$37.49
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.
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Carquest Premium – Carquest A/C Receiver Drier, T33462 (Part No.T33462)

Carquest A/C Receiver Drier, T33462

from

$32.99
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.
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DAYTON PARTS – DAYTON PARTS Air Conditioning Pressure Sensor, 904-9928 (Part No.904-9928)

DAYTON PARTS Air Conditioning Pressure Sensor, 904-9928

from

$52.99
This A/C refrigerant pressure sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.
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Omega Environmental Tech – Omega Environmental Tech A/C Expansion Valve, 31-12127-AM (Part No.31-12127-AM)

Omega Environmental Tech A/C Expansion Valve, 31-12127-AM

from

$80.99
The expansion valve/orifice tube is designed to slow the refrigerant before it enters the evaporator, maximizing the refrigerant’s cooling capability. Omega recommends replacing the expansion valve/orifice tube each time the A/C system is serviced to ensure optimal performance. Our Expansion Valves are manufactured from the highest quality materials and are engineered for long life under extreme conditions, ensuring reliable performance and durability. Each valve is individually packaged to prevent contamination, maintaining the integrity of the A/C system.
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Carquest Premium – Carquest A/C Orifice Tube – Orange, T38639 (Part No.T38639)

Carquest A/C Orifice Tube - Orange, T38639

from

$5.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.
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Omega Environmental Tech – Omega Environmental Tech A/C Expansion Valve, 31-31234 (Part No.31-31234)

Omega Environmental Tech A/C Expansion Valve, 31-31234

from

$50.99
The expansion valve/orifice tube is designed to slow the refrigerant before it enters the evaporator, maximizing the refrigerant’s cooling capability. Omega recommends replacing the expansion valve/orifice tube each time the A/C system is serviced to ensure optimal performance. Our Expansion Valves are manufactured from the highest quality materials and are engineered for long life under extreme conditions, ensuring reliable performance and durability. Each valve is individually packaged to prevent contamination, maintaining the integrity of the A/C system.
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Omega Environmental Tech – Omega Environmental Tech A/C Compressor, 20-10085 (Part No.20-10085)

Omega Environmental Tech A/C Compressor, 20-10085

from

$558.99
Our compressors are built with high-quality components for superior reliability and performance. Engineered to reduce fuel consumption and minimize noise, they enhance driver and passenger comfort. Designed as direct replacements, they ensure a perfect fit and easy installation. Every compressor and component is brand new-never remanufactured-and undergoes rigorous multi-point quality testing to guarantee durability and performance. Trusted for industry-leading quality and reliability.
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Omega Environmental Tech – Omega Environmental Tech A/C Compressor, 20-04077-AM (Part No.20-04077-AM)

Omega Environmental Tech A/C Compressor, 20-04077-AM

from

$431.99
Our compressors are built with high-quality components for superior reliability and performance. Engineered to reduce fuel consumption and minimize noise, they enhance driver and passenger comfort. Designed as direct replacements, they ensure a perfect fit and easy installation. Every compressor and component is brand new-never remanufactured-and undergoes rigorous multi-point quality testing to guarantee durability and performance. Trusted for industry-leading quality and reliability.
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Omega Environmental Tech – Omega Environmental Tech A/C Compressor, 20-04042-S (Part No.20-04042-S)

Omega Environmental Tech A/C Compressor, 20-04042-S

from

$349.99
Our compressors are built with high-quality components for superior reliability and performance. Engineered to reduce fuel consumption and minimize noise, they enhance driver and passenger comfort. Designed as direct replacements, they ensure a perfect fit and easy installation. Every compressor and component is brand new-never remanufactured-and undergoes rigorous multi-point quality testing to guarantee durability and performance. Trusted for industry-leading quality and reliability.
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Omega Environmental Tech – Omega Environmental Tech A/C Compressor, 20-04077 (Part No.20-04077)

Omega Environmental Tech A/C Compressor, 20-04077

from

$589.99
Our compressors are built with high-quality components for superior reliability and performance. Engineered to reduce fuel consumption and minimize noise, they enhance driver and passenger comfort. Designed as direct replacements, they ensure a perfect fit and easy installation. Every compressor and component is brand new-never remanufactured-and undergoes rigorous multi-point quality testing to guarantee durability and performance. Trusted for industry-leading quality and reliability.
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Carquest Premium – Carquest A/C Condenser, 719032 (Part No.719032)

Carquest A/C Condenser, 719032

from

$321.99
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.
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Omega Environmental Tech – Omega Environmental Tech A/C Condenser, 24-14679 (Part No.24-14679)

Omega Environmental Tech A/C Condenser, 24-14679

from

$246.99
The condenser removes heat from the A/C refrigerant within the system. In late model vehicles, condensers cannot be cleaned or flushed. It is recommended to replace the condenser whenever a new compressor is installed for optimal performance.
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Omega Environmental Tech – Omega Environmental Tech A/C Condenser, 24-50286 (Part No.24-50286)

Omega Environmental Tech A/C Condenser, 24-50286

from

$489.99
The condenser removes heat from the A/C refrigerant within the system. In late model vehicles, condensers cannot be cleaned or flushed. It is recommended to replace the condenser whenever a new compressor is installed for optimal performance.
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Omega Environmental Tech – Omega Environmental Tech A/C Evaporator Core, 27-19516 (Part No.27-19516)

Omega Environmental Tech A/C Evaporator Core, 27-19516

from

$719.99
The evaporator is designed to remove heat from the interior of the vehicle. This process begins when the blower motor forces air through the evaporator fins, allowing the refrigerant inside to absorb and remove heat from the cabin. Our Evaporator Assemblies are manufactured from the highest quality materials and are engineered for long life under extreme conditions, ensuring reliable performance and durability.
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Carquest Premium – Carquest Air Conditioner Refrigerant Pressure Sensor, ACA1767 (Part No.ACA1767)

Carquest Air Conditioner Refrigerant Pressure Sensor, ACA1767

from

$42.99
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 Sensor reports system pressures to the on-board computer, in turn allowing the computer to properly and efficiently control the compressor, fans and system levels. An improperly functioning A/C Pressure Sensor will provide erratic or inaccurate readings to on-board computers severely affecting system performance and function. Without reliable and accurate data from a properly functioning A/C Pressure Sensor, on-board computers are unable to protect the safety of critical components and the system as a whole which can lead to excessive wear and tear on critical components and costly system damage.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1349 (Part No.ACA1349)

Carquest HVAC Pressure Switch, ACA1349

from

$60.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1319 (Part No.ACA1319)

Carquest HVAC Pressure Switch, ACA1319

from

$41.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1804 (Part No.ACA1804)

Carquest HVAC Pressure Switch, ACA1804

from

$51.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1763 (Part No.ACA1763)

Carquest HVAC Pressure Switch, ACA1763

from

$21.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1779 (Part No.ACA1779)

Carquest HVAC Pressure Switch, ACA1779

from

$25.99
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.
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Omega Environmental Tech – Omega Environmental Tech HVAC Pressure Switch, MT1638 (Part No.MT1638)

Omega Environmental Tech HVAC Pressure Switch, MT1638

from

$41.99
Maintain optimal A/C performance with our HVAC Pressure Switches. Designed to monitor high and low refrigerant pressures, these switches cycle the compressor to maintain efficient cooling and prevent damage from abnormal pressure conditions. A malfunctioning pressure switch can lead to poor cooling performance or even compressor failure. Engineered for accuracy and durability, our pressure switches ensure reliable system operation and long-lasting performance, helping to keep your cabin comfortable in all conditions.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1331 (Part No.ACA1331)

Carquest HVAC Pressure Switch, ACA1331

from

$39.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1769 (Part No.ACA1769)

Carquest HVAC Pressure Switch, ACA1769

from

$45.99
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.
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Carquest Premium – Carquest HVAC Pressure Switch, ACA1759 (Part No.ACA1759)

Carquest HVAC Pressure Switch, ACA1759

from

$53.99
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.
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Air Conditioning Parts Brands You Can Trust For Your Peterbilt 378

3 trusted brands of Air Conditioning Parts line our shelves, ready to help keep your Peterbilt 378 running smooth. Below are some of the most popular brands and their top Air Conditioning Parts offerings:

Popular Carquest Premium Air Conditioning Parts

Carquest Premium products for the Peterbilt 378 span several categories. Some of the highest-rated Carquest Premium Air Conditioning Parts that will fit your Peterbilt 378 are:
Carquest A/C Orifice Tube - Orange, T38639
from $5.99
(97)
Carquest A/C Orifice Tube – Orange, T38639
Expansion Valve and Orifice Tubes

Most Purchased Peterbilt 378 Air Conditioning Parts from Carquest Premium

When you buy the most frequently purchased Carquest Premium brand Air Conditioning Parts, you can be confident it will be the right part for your Peterbilt 378. Here are the Carquest Premium Air Conditioning Parts Advanced Auto customers buy the most:
Carquest A/C Orifice Tube - Orange, T38639
from $5.99
(97)
Carquest A/C Orifice Tube – Orange, T38639
Expansion Valve and Orifice Tubes
Carquest A/C Receiver Drier, T33462
from $32.99
This product is not rated
Carquest A/C Receiver Drier, T33462
Accumulator and Receiver Driers
Omega Environmental Tech A/C Compressor, 20-04077
from $589.99
This product is not rated
Omega Environmental Tech A/C Compressor, 20-04077
AC Compressor Without Clutch

FAQs for Peterbilt 378 Air Conditioning Parts

What are the most purchased Air Conditioning Parts for the Peterbilt 378?

Out of 32 Air Conditioning Parts for the Peterbilt 378, the most popular in our inventory are:
Carquest A/C Receiver Drier, T33462
from $32.99
This product is not rated
Carquest A/C Receiver Drier, T33462
Accumulator and Receiver Driers
Carquest A/C Receiver Drier, T33537
from $46.99
This product is not rated
Carquest A/C Receiver Drier, T33537
Accumulator and Receiver Driers
Carquest A/C Accumulator, T33221
from $37.49
This product is not rated
Carquest A/C Accumulator, T33221
Accumulator and Receiver Driers