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


$1,095.00 $995.00

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1971-72 Chevrolet Chevelle/El Camino SS LS3 396 400 402 LS5 454 ZL2 Cowl Induction Air Cleaner. This assembly has been refinished in the correct semi-gloss black finish to present a period correct image. The single canted snorkel with round end is in very nice condition and correct for the last of the LS-engine Cowl Induction A-body platforms. The base is very clean and adorned with a GM licensed reproduction Air Cleaner Service Decal (DH). Note that the snorkel is canted downward and is angled towards the corner of the passenger side fender (71-72 specific). It is also unique to these years as well, incorporating the ThermAC pre-heater function that was required for the new emissions standards as of 71. The flame arrestor tube is topped with an NOS GM stamped stainless screen, all connected to the valve cover with a GM yellow stamped adapter hose on the bottom connector tube. The ThermAC connects to the AC Air Temperature Sensor with new white-striped vacuum hose and is secured with an original GM clip. An original style date stamp has been added for further authenticity and as a nice finishing touch. A nice original pre-heater elbow, replete with Wittek screw clamp, is included to make installation more complete. 

The flange seal fits very tightly in the confines of the air cleaner and is completed with an original survivor new seal featuring the correct seam sealing tape. The REAR decal is placed correctly as well. 

The original lid presents well and is either garnished with a choice of one (1) silver/black Turbo-Jet displacement decal (let us know which you'd like), or omitted for 72 models. To finalize the package, a period correct wing nut and a reproduction A212CW Square Mesh filter with correct verbiage are included.

As an added value, the assembly includes a correct black aluminum pre-heater hose to make installation more complete.  

This assembly presents very well and will enhance your restoration. Best of all, it is a very rare and genuine GM part.

Many companies will try to pass off the 70 style reproduction cowl assembly as correct for 71-72 models - this is not the case. These were specifically designed to meet more stringent drive-by noise regulations, as well as be emissions compliant. While the aftermarket pieces are "affordable," they are far from correct and can be distinguished from originals quickly when one knows what to look for.

Many of our parts are available only once - we cannot predict if/when another will become available due to the scarcity of original parts. The old adage "here today, gone tomorrow" applies to many of these unique assemblies. While we strive to maintain a strong diversity of desirable parts, there simply aren't enough available to meet demand at times. 

We have also noticed several other selling entities using our descriptions regarding content and application - all the more adding to the details we strive to present so our customers can make an informed decision.

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




This assembly is correct for the following:

1971-72 Chevrolet

454/365 & 396/300HP & 400/300HP Turbo-Jet models installed in Chevelle SS/El Camino SS cars featuring the Cowl Induction ZL2 option.

Note: both automatic and 4 speed equipped cars featured the ThermAC valve on the top of the snorkel. Non-cowl induction cars used a smaller case single/dual snorkel air cleaner specific to these years depending upon the A/C option. These assemblies differed from the 1970 version with the incorporation of the new for 71 ThermAC emissions provision for heated air at start-up using the air temperature sensor. The snorkel was canted downward, as opposed to the 70 straight version.

For the 72 version, no displacement decal was used; we do include one so you may choose to add it for more eye appeal if desired (loosely installed). 



The assembly will fit factory 4 barrel Quadrajet carburetors with a 5 1/8" diameter flange, as well as Holley (factory), Carter, and Edelbrock variations without 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.



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