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1979 Pontiac Trans Am Shaker Scoop With Air Cleaner Assembly 400/455


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OEM 1979 Pontiac Trans Am Pontiac W72 400/455 Shaker Air Cleaner. The assembly has media blasted and refinished in semi-gloss black to present a period correct image. The base features an oval snorkel in good condition with the correct 6" opening, new vacuum lines, and a new heavy duty air filter. The exterior features a new Air Cleaner Service Decal (PJ=79). 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. Some emission provisions have been plugged due to the special request of the item. The replacement shaker lid is in very good condition as well. To complete the package, a period correct wing nut with stud and a new filter breather are included. 

The original fresh air duct work is also very nice, having endured service for over 40 years. It features the oval snorkel adapter, new 4" vinyl replacement duct, elbow duct, and fresh air fender duct.

An original 78-79 Pontiac 400 Shaker scoop, replete with attaching stainless steel band clamp, is included to ensure that the parts are 100% compatible.

As an added bonus, 3' of distributor vacuum line is included.

This assembly presents very nicely and will enhance your restoration. 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 1978-79 models:


Trans Am with 400 / 455* Pontiac engine

*It will also fit 73-76 and 80-81 cars with 400/455 engine.1977 W-72 cars used the round 4" air cleaner. Note that this air cleaner is specific to 78-79 models in that the location of the valve cover breather inlet - it differs from the earlier models. 


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 variations without 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