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

1973-76 Pontiac Trans Am Fiber Fresh Air Intake Duct Hose 489908


This item is out of stock



1973-76 Pontiac Trans Am W72 L78 400 / 455 Fresh Air Duct. This is the correct OEM style 4" fresh air duct that was used on all Pontiac Trans Ams/Formulas from 1973-1976. It is new and has never been used, only suffering from very minor shelf wear. This hose features a 4" diameter opening on both ends with formed plastic locking clips and 12 spiral bands. The 4" fiber hose covers the spiral wrapped insert - providing flexibility that is required to bridge the gap between the air cleaner inlet and fender mounted fresh air duct. It installs on your WS4 oval to round intake adapter (not included); the connection point is at the elbow duct near the fender.

This is an original off-the-shelf part that has completely disappeared from the original production process.

GM: PN 489908

4" (diameter) x 12 1/2" (length)

Markings: the clip ends feature the "Wiremold" logo on the inside of both clips.

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

It will be packaged safely to prevent damage, but no original box/packing material is available.




This assembly is correct for the following models:

Pontiac 1973-76 Trans Am with 400 / 455 Pontiac engine to include SD models




The assembly will fit factory 4 barrel air cleaner adapters as found on the 73-76 Trans Ams. It is different from the later models in the form of how it is made (fiber vs vinyl and clamp style). 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 shipping costs:

            US  - FREE

            Canada / Hawaii / Alaska $20 +/-

            Scandinavia  $35 or less

            Australia  $40 or less