GREEN FILTER® 2027 - Crankcase Air Filter with Rubber End Cap, w/o Shield (1.25 F x 2.5 L x 3 B x 3 D)

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GREEN FILTER® - Crankcase Air Filter
GREEN FILTER® - Crankcase Air FilterGreen Filter Authorized Dealer
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Universal Fit
Fitment Notes:
  • Not Vehicle Specific
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Green Filter Accessories

Crankcase Air Filter with Rubber End Cap, w/o Shield (2027) by Green Filter®, 1.25 F x 2.5 L x 3 B x 3 D. Route your crankcase breather into one of these filters to keep dirt and bugs from entering your crankcase. It’s easy to clean, and will soak up some glop that otherwise would wind up all over your engine compartment.

Green Filter Why Go GreenGreen Filter BenefitsGreen Filter Cleaning


  • Cotton element catches oily blow-by
  • Steel mesh resists denting
  • Prevents dirt and foreign objects from entering crankcase breather system
  • Resists clogging
  • Easily cleaned and reused
  • Keeps engine bay cleaner
  • Pre-oiled filter element the product is ready to install right out of the box
  • Limited Lifetime Warranty

All engines outgas crankcase fumes. That's a given. Crankcase vapors are a noxious miasma of cylinder blow by, oil fumes, water vapor, acids and partially burned fuel. Emissions controlled engines have sometimes elaborate systems to route this noxious gorp back into the intake manifold. Sometimes that works well, sometimes not. And as your engine gets older and the rings and valve stem seals wear, the volume of blow by inevitably increases. If you have an engine that's not emissions regulated, whether it's a racing engine, a small engine on a tractor or ATV, or just a stationary engine on a pump or generator, it's essential that a filter be installed on the vent. A filter will keep dirt from collecting inside the vent when the engine is off, and eventually migrating into the crankcase. And let's not even consider the damage a cache of spider eggs or even some nuts or seeds smuggled into the breather by a rodent could cause.

Adding a Green Filter crankcase filter will keep outside stuff outside of your engine. Because it passes airflow so easily, it will take a long time to accumulate enough congealed oil and sludge to plug. Like a Green Filter air filter, simply spray it down with cleaner, rinse it off in water, let it dry and re-oil. In fact, a Green Filter crankcase filter should catch a fair amount of oily blow by and keep it in the filter medium. That will keep your engine bay cleaner longer!

It's vital to maintain low restriction in the vent line, because pressurizing the crankcase will make oil leak in multiple places around the engine, and could even make the main seals invert or blow right out.

Long before they started producing filters for street cars, Green Filters made custom air filters for the motorsports industry, with clients like MAZDASPEED, Chip Ganassi Racing, Saleen, and Toyota. These top names in road and off-road racing chose Green Filters for their superior performance and constantly-improving technology. Producing the same type of filter in fitments for street cars was a simple step, and the line of vehicles covered is constantly expanding. Better yet, their continuing role in motorsports keeps them at the cutting edge of air filter and cold air induction system technology.

Part Number:

Vehicle Fitment

This part is universal
Year Make Model Fitment Notes:
ALL       ALL        ALL         This part is universal
    GREEN FILTER® - Crankcase Air FilterGREEN FILTER® 2027 - Crankcase Air Filter with...    $16.79
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