Dual 4150 Carb Flame Arrestor with K&N Filter 

Billet Aluminum Oval Arrestor - Dual 4150 (5-1/8") Flange. 8-5/8" Centers

This Flame Arrestor Optimizes Performance and Increases Airflow Dramatically. This Flame Arrestor Is Excellent for Street, Race & Marine Use! It Features a Polished Billet Aluminum Housing and a K&N Air Filter. 21" Long, 10-1/2" Wide, 4-3/4" Tall. For 4150 Carburetors. Carb center to center is 8-5/8".