1978 Mercedes-Benz 300SD Air Conditioning Parts

Essential 1978 Mercedes-Benz 300SD Air Conditioning Parts

Behr – A/C Pressure Switch (Part No.R1054178181BEH)

A/C Pressure Switch

from

$22.52
Behr GmbH & Co. KG, Stuttgart, is a specialist for automotive air conditioning and engine cooling systems, the Behr Group is one of the world’s leading manufacturers and suppliers of Original Equipment cooling and air conditioning products for European passenger and commercial vehicles. 2 bar low pressure and 30 bar high pressure binary switch. This switch is designed to be compatible with R-12 and R134a refrigerants. Located on receiver-drier with 2 spade terminals. Used for compressor cut-out.
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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 – New Compressor with Clutch, Nippondenso 10PA20C (Part No.T78394)

New Compressor with Clutch, Nippondenso 10PA20C

from

$620.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Endurance tested the equivalent of 50k miles
  • Includes specific electrical connector to eliminate splicing
  • Charged with lubricant to reduce internal friction promoting enhanced system performance and longevity
  • For ease of installation this compressor includes a direct fit OE style connector as well as all gaskets, O-rings, or seals needed to repair your car
  • Each unit is individually leak, vacuum and pressure tested prior to packaging to ensure leak free performance
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Carquest Premium – New Compressor with Clutch, GM R4 Heavy (Part No.T58228)

New Compressor with Clutch, GM R4 Heavy

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$315.99
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
  • Double lip shaft seal to reduce refrigerant leakage over time requiring less maintenance
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KAI – A/C Expansion Valve, L6 Engine (Part No.ACX011004)

A/C Expansion Valve, L6 Engine

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$33.99
New Standard Replacement A/C Expansion Valve, L6 Engine

Product Features:
  • L6 Engine
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – A/C Block Type O-Ring Expansion Valve (Part No.T38602)

A/C Block Type O-Ring Expansion Valve

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$44.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve 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.
  • O-Rings necessary for installation are included.
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Dorman – Electrical Harness – 2-Wire GM A/C Clutch with Diode (Part No.85143)

Electrical Harness - 2-Wire GM A/C Clutch with Diode

from

$11.99
This HVAC clutch coil 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 clutch coil 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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Factory Air – Green Round O-Ring (Part No.24650)

Green Round O-Ring

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$1.99
Made from HNBR material; Compatible with R12 And R134A; High quality construction; Universal applications
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Factory Air – Ceramic Shaft Seal Kit (Part No.24016)

Ceramic Shaft Seal Kit

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$21.29
All hardware included; Compatible with R12 And R134A; High quality construction; Universal applications
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Factory Air – Sealing Washer Kit (Part No.24334)

Sealing Washer Kit

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$12.29
Includes O-Ring; Compatible with R12 And R134A; High quality construction; Universal applications
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Factory Air – Sealing Washer Kit (Part No.24338)

Sealing Washer Kit

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$5.29
Includes O-Ring; Compatible with R12 And R134A; High quality construction; Universal applications
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ACM – Air Conditioning Temperature Switch (Part No.R105511825ACM)

Air Conditioning Temperature Switch

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$33.17
ACM is a supplier of Original Equipment quality climate control products. 2 spade terminals on short pigtail.
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Behr – A/C Temp. Switch (Part No.R105529376BEH)

A/C Temp. Switch

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$40.85
A/C Temp. Switch

Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26771)

O-Ring & Gasket A/C System Seal Kit

from

$11.49
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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ACM – Air Conditioning Manifold Seal Kit (Part No.R111169968ACM)

Air Conditioning Manifold Seal Kit

from

$5.41
ACM is a supplier of Original Equipment quality climate control products. Seal rings for suction and delivery lines.
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National – Bearings (Part No.907257)

Bearings

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$48.99
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
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Driveworks – Ball Bearing (Part No.S-907257)

Ball Bearing

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$22.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Factory Air – New Nippondenso 10P Clutch Assembly w/ Coil (Part No.47599)

New Nippondenso 10P Clutch Assembly w/ Coil

from

$242.99
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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Factory Air – Reman GM Frigidaire/Harrison A6 Clutch Assembly w/ Coil (Part No.48284)

Reman GM Frigidaire/Harrison A6 Clutch Assembly w/ Coil

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$119.99
High quality OE replacement part with all components needed to complete the job

Product Features:
  • All mounting hardware included
  • All pulleys and hubs are machined and trued to ensure an even surface
  • Twelve point hub weld
  • Coated to prevent corrosion
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Carquest Premium – AC Pressure Sensor (Part No.ABA1074)

AC Pressure Sensor

from

$135.99
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 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.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to 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 Sensor.
  • All units are helium leak tested on fully automated mass spectrometer equipment before end-of-line testing.
  • All units are tested using automated end-of-line testing equipment that pressurizes the A/C Pressure Sensor and checks full-spectrum functionality and electrical output to ensure each A/C Pressure Sensor meets manufacturing specifications before packaging
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Carquest Premium – AC Pressure Switch (Part No.ACA1572)

AC Pressure Switch

from

$27.99
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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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 – A/C Filter Drier (Part No.T33399)

A/C Filter Drier

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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Carquest Premium – A/C Filter Drier (Part No.T33376)

A/C Filter Drier

from

$34.99
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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Metrix – Receiver Drier (Part No.R104054391MTX)

Receiver Drier

from

$46.92
METRIX receiver driers are manufactured to OE specifications and provide durable, efficient performance. The OE engineered internal components provide enhanced separation of liquid and vapor, along with a desiccant filter that effectively controls moistur

Product Features:
  • OE-Quality – Exact Fit
  • Utilizes factory style fittings and connectors
  • Compatible with both R12 and R134A refrigerant
  • Manufactured using the highest quality components
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1978 Mercedes-Benz 300SD Air Conditioning Parts

Maybe you’re in the middle of a full rebuild of that 1978 Mercedes-Benz 300SD. Maybe you just need a couple of Air Conditioning Parts. Either way, Advance Auto Parts has 28 different Air Conditioning Parts in our inventory ranging from $0.99 to $478.99. That means you can find the exact parts or products you need to keep that 1978 Mercedes-Benz 300SD 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 Mercedes-Benz 300SD. Factory Air, Dorman, 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 Mercedes-Benz 300SD, but don’t take our word for it – read our customer ratings and reviews and buy with confidence.

So if you’re in the market for aftermarket Air Conditioning Parts to keep your 1978 Mercedes-Benz 300SD 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 Mercedes-Benz 300SD Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Mercedes-Benz 300SD 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 300SD the best it can be. Be sure to browse some of our top Air Conditioning Parts brands and parts.

Popular Carquest Standard Air Conditioning Parts

We carry Carquest Standard parts in our stock across AC Compressor Without Clutch categories, plus more. For a 1978 Mercedes-Benz 300SD, our most popular Carquest Standard Air Conditioning Parts include:
Reman GM A6 Compressor w/ Clutch
from $349.99
(1)
Reman GM A6 Compressor w/ Clutch
AC Compressor Without Clutch
Reman GM R4 Heavy Compressor w/ Clutch
from $219.99
(2)
Reman GM R4 Heavy Compressor w/ Clutch
AC Compressor Without Clutch

FAQs for 1978 Mercedes-Benz 300SD Air Conditioning Parts

What are the most purchased Air Conditioning Parts for the 1978 Mercedes-Benz 300SD?

Out of 28 Air Conditioning Parts for the 1978 Mercedes-Benz 300SD, the most popular in our inventory are:
5-Wire Style Relay
from $15.99
This product is not rated
5-Wire Style Relay
AC Relay Connectors
Green Round O-Ring
from $1.99
This product is not rated
Green Round O-Ring
AC Compressor Seals
Ball Bearing
from $22.29
(4)
Ball Bearing
AC Compressor Thrust Bearings