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


$769.00 $739.00

There is only 1 item left in stock.




1970-72 Oldsmobile 4-4-2 W-30 Style Add-on 455 Outside Air Induction Air Cleaner & Top Assembly. This OAI is a nice reproduction of the original Olds outside air induction air cleaner assembly that completes the W-30 OAI option for the 4-4-2 with the 455 engine. The assembly is complete and functions correctly - as designed by Oldsmobile. The OAI top features a new vacuum actuator with vacuum line that works properly to operate the fresh air trap door; it has a minor repair on the bottom that is out of sight once installed, but mentioned for clarity.  The OAI housing is nice and the 455-specific seal is new. A matching fresh-air air cleaner lid sits atop a new heavy duty air filter and completes the top assembly requirements.

The air cleaner base has been refinished in low-gloss black to present a period correct image. The large oval snorkel with the formed oval end (as opposed to smaller unit with pressed on end fitting) is in good condition with a functional ThermAC pre-heater along with new white striped vacuum lines. The base is clean and comes with a correct air temperature sensor (ATS) installed with the correct retainer.  The exterior features a reproduction Air Cleaner Service Decal (NJ=OAI 71/72).  As an added measure, an original date stamp has been recreated to add a nice touch of authenticity. This assembly is specific to 1970-72 350/455 cars due to the style and orientation of the snorkel. The base includes the second breather tube hole and drain holes in the bottom. A new air cleaner wing nut completes the package.

As an added value, a set of valve cover retainer clips/springs is included to make installation complete.

This assembly is in nice condition and will enhance your restoration. It is an ideal choice for adding an original W-30 Outside Air Induction (OIA) option to your 4-4-2 if your car didn't originally have it. Best of all, it is a genuine GM licensed restoration part! 

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



This assembly is correct for the following 1970-72 455 models:


4-4-2, Cutlass Supreme, Rallye 350*, Hurst Olds


*While this assembly is set up for the 455, a change of the foam will adapt it to the 350/400 engines. 




The assembly will fit factory 4 barrel carburetors (Rochester Quadrajet) with the 5 1/8" diameter flange. If you have modified your carburetor, intake manifold or valve covers, 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.



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