Engine Breather Filters
Find the perfect sized breather filter for your project! STM offers a ton of options for building a custom engine oil catchcan or find the right outlet size to vent your valve cover. Filters are not vehicle-specific.
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K&N Breather Filter for 5/16in Valve Cover (62-2470)
$26.99
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K&N Breather Filters with Steel Base
from $23.99
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Radium 10AN ORB Fitting to Breather Filter (20-0050)
$37.95
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Radium Breather Filter 1/4" ID (18-0042)
$28.45
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STM Universal 5/8" Breather Filter
$19.95
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Vibrant Crankcase Breather Filters
from $9.99
