Classic Auto Air Manufacturing

Model Specific Air Conditioning
1930's to 1980's Cars & Trucks
Since 1977

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What’s a car air conditioning compressor?

The compressor is a belt driven engine-mounted pump that serves as the heart of your car’s air conditioning system. It draws refrigerant gas from the Evaporator, compresses it into a hot gas and pumps it to the Condenser.

We offer parts and restoration services for a wide variety of GM A5 and A6 compressors, clutches, clutch brushes, clutch bearings, idlers, manifolds and shaft seals. Have a question? All you have to do is call or email.

Our more popular rebuilt & new compressors:

  • A6 5” Single-Groove, Rebuilt. Part # 5-148
  • A6 5/8” Single-Groove, Rebuilt. Part # 5-150
  • A6 5” Double-Groove, Rebuilt. Part # 5-149
  • A6 5” Single-Groove, New. Part # 5-143
  • A6 5 5/8” Single-Groove, New. Part # 5-155
  • A6 5” Double-Groove, New. Part # 5-144

6 5” Single-Groove Compressor, Rebuilt (Part # 5-148)

A6 5” Single-Groove Compressor, Rebuilt (Part # 5-148)

Compressor Restoration?

Why restore your compressor?

You should restore or replace your compressor if:

  • Your air conditioning system has poor system gauge readings
  • The compressor is leaking, has seized or is knocking
  • You’re converting the system to 134a, More on Converting to 134a!
  • Your AC system has been inoperable for a long period of time
  • You’re doing a complete air conditioning system restoration.

Classic Auto Air offers replacement compressors and can custom restore your original GM compressor for you.


GM A5 Sealed Compressor Before Restoration


A5 Sealed Compressor After Restoration

GM A5 Sealed Compressor


GM A6 Compressor Before Restoration


GM A6 Compressor After Restoration

GM A6 Compressor

Custom compressor restoration for all GM A-5 and A-6 compressors.
Call or email now!

Typical GM Evaporator After Typical 1966 Corvette Evaporator

The evaporator is the coil that is located in a box (called an evaporator housing or plenum) mounted behind the dash or on the firewall in the engine compartment.

1967 GTO Condenser

The condenser is the radiator-like device mounted in the front of the radiator in the engine compartment.

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