Manwelder Fabrications 4DIDF Dual 4" Inlet Air Filter Aluminum Box For Weber IDF Single Carburetors

American made, tig welded aluminum, by Manuel Escalante in Apple Valley California. Manwelder Fabrication's Dellorto DRLA, EMPI HPMX, or Weber IDF carburetor adapter has dual sanded 4" inlets and built in velocity stacks for unobstructed air flow. The dual inlets allows you to run either two Duralite filters or two UMP air filter canisters.

Important Notes: NOT for use with forced induction, such as a turbo charger. Designed for a naturally aspirated VW engine. If you have CB Performance idle Jet Doctors or EMPI HPMX carburetors that have the idle jet extensions, you'll have to remove them. The brass extensions would be sitting outside the air box if you drilled the bottom of it.