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1966 427 425HP L72 Biscayne Custom Dual Snorkel Air Cleaner


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1966 L72 427/425HP Custom Dual Snorkel Air Cleaner. This is an original 70 Z28 assembly that has been modified and refinished to a period correct image. The assembly features an original ridged base with modified flange dual snorkels that are attached to mirror the correct flat bottom base assemblies. Both snorkel inlets are clean with minimal distortion, as are the original interior flanges that they were welded to by the factory process. An original GM dimpled spark arrestor screen sits perched on top of the flame arrestor tube and has a GM stamped rubber adapter fitting complete with 90 degree big block elbow. The exterior features a GM licensed reproduction air cleaner service decals PN 6421213. As an added level of authenticity, a period correct date stamp has been added to the interior.

An OEM black lid enhances the assembly and comes with an original seal. The lid is garnished with a new set of  427/425HP Turbo-Jet DecalsThe assembly is completed with a new heavy duty air filter and period correct wing nut.

Differences between this custom air cleaner are left to the bottom of the base: originals were flat, while this one features the raised ridge. 

The assembly presents well and will augment your restoration. Best of all, it is made with original GM components.



This assembly is correct for the following:

1965 Chevrolet

396/375HP or 425HP L37 Chevelle/Malibu SS (201 with Z-16 Package) & Impala SS

1966 Chevrolet

427/425HP L72 Impala SS, Biscayne/Caprice (1,856)



The assembly will fit factory 4 barrel Holley/Quadrajet carburetors with a 5 1/8" diameter flange, as well as other Holley (most 4150 styles), Carter, and Edelbrock variations without electric choke (some adjustment to the carburetor alignment tangs may be required). 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. Handling charge includes full coverage insurance.



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 USPS & FedEx