Restoring American Muscle Car and Classics - we help your engine breath easier!

1977 78 79 Pontiac Trans Am 400 Shaker Air Cleaner


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OEM 1977-78-79 Pontiac Trans Am Pontiac W72 400 Shaker Air Cleaner. The assembly was taken in as a partial trade and has been previously powder coated in low gloss black. The base features the round snorkel inlet in good condition with the correct 4" opening and updated with new yellow-striped vacuum lines, correct ATS, and a new heavy duty air filter. The exterior features a GM Licensed Air Cleaner Service Decal (RD=77). 

The base features the correct deep drop required for proper shaker hood clearance, as well as the angled flange that parallels the base level with the sloped hood line of the F-body. The assembly connects to your fresh air elbow with an OEM style (dealer stock) fresh air intake hose featuring correct metal band clamps.

A reproduction lid installs on top of the filter and comes with a new wing nut to complete the assembly. 

This assembly is in good condition and will return your T/A back to the way the factory intended it to be. Best of all, it is a genuine GM part!

For further information on the restoration process, please contact us.




This assembly is correct for the following 1977-79 models:


Trans Am with 400 Pontiac engine 

Note that the 1977 W72 package came with this style air cleaner assembly, while 78-79 reverted to the oval inlet assembly.

*It will also fit 455 Pontiac engines transplanted into 400 cars. It will also fit 73-76 cars as well, but is not technically correct for their applications.


Note: this will NOT fit the L80 403 Olds engines or Pontiac 301/Chevrolet 350 engines due to the offset of the shaker scoop, as well as the difference in carburetor flange drop. 





The assembly will fit factory 4 barrel Quadrajet carburetors with a 5 1/8" diameter flange, as well as Holley (it will NOT fit double pumpers; i.e. models 4150/4160), Carter/Edelbrock variationswithout an electric choke (some adjustment to the carburetor alignment tangs may be required). If you have modified your carburetor or intake manifold, please inquire first prior to bidding to ensure fitment is correct. Return requests for non-fitment will not be honored.





The assembly will ship within one day (usually the day of payment) with shipping/tracking information provided.



This assembly is guaranteed to match the item description – customers have up to 14 days to return the assembly after receipt if it is not as described.



Assemblies must be returned in the original packing – customers are responsible for return shipping charges. A refund will be issued upon receipt of the inspected assembly. Returns for non-fitment will not be honored – please ask questions first.



In the event of shipping damage, customers must save all packaging and send 5 digital pictures so Musclecar Air Cleaners can initiate a shipping damage claim.



We ship with


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Estimated insured shipping costs:

            US  $20-$30 

            Canada / Hawaii / Alaska $45 +/-

            Scandinavia  $65 or less

            Australia  $95 or less