K&N Stubstack Air Horn (85-0500)

K&N Stubstack Air Horn (85-0500)This K&N Stubstack is designed to be used on Holley 390 850 cfm square bore carbs (4150 4160), that have had the choke horn milled off, but do not use an air cleaner. The full radius design helps to increase the airflow for drag racing. Will also hold down the base plate of a cold air scoop. Will not work with K&N Custom Chrome Racing Air Cleaners. The K&N Stubstack is designed to increase the airflow of carburetors by decreasing the restriction

the amount of water that reaches the air filter or flame arrestor is limited

This allows your engine to inhale a larger amount of air than the factory air filter assembly and turbo intercooler pipe

Street legal in all 50 states

Self-priming design provides a quiet running volume

Silicone hoses and hardware included for installation

This system allows the engine to inhale a larger amount of air than the factory air filter assembly

This coupler connects two 3-3/4 inch tubes and is 1-3/4 inches in length

This custom air filter kit can fit single or two barrel carburetors

This is an optional foam piece which replaces the OEM foam block

This system includes BOTH a redesigned larger hood scoop inlet for the ram air scoop and K&N’s intake

The intake tube has an attractive black powder-coat finish that's made to last and it accommodates the factory mass air sensor

contain uniform micron sized openings that allow high air flow