![Offenhauser 2748 Aluminum Carb Hat Air Plenum Carburetor Bonnet](https://s.turbifycdn.com/aah/yhst-136189531252563/offenhauser-2748-aluminum-carb-hat-air-plenum-carburetor-bonnet-6.png)
Offenhauser 2748 Aluminum Carb Hat Air Plenum Carburetor Bonnet
description
![](https://sep.turbifycdn.com/ty/cdn/yhst-136189531252563/ships.png?t=1725629524&)
This aluminum carburetor air horn from Offenhauser is built for 4-7/32 in carb neck like the 1950’s vintage 4GC, WCFB etc. This air horn has 2-5/8 in hose inlet OD.
Air inlet for low hood clearance Originally for early OHV V-8 conversion tight engine bays Fits 4-7/32 in carb neck
![](https://sep.turbifycdn.com/ty/cdn/yhst-136189531252563/p65warrning.jpg?t=1725629524&)
![](https://sep.turbifycdn.com/ty/cdn/yhst-136189531252563/ships.png?t=1725629524&)
This aluminum carburetor air horn from Offenhauser is built for 4-7/32 in carb neck like the 1950’s vintage 4GC, WCFB etc. This air horn has 2-5/8 in hose inlet OD.
Air inlet for low hood clearance Originally for early OHV V-8 conversion tight engine bays Fits 4-7/32 in carb neck