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Spectre 3991

Breather Filter
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5.0 out of 5 stars 1 Customer Review
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$10.19 USD
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This Spectre breather filter, also known as a crankcase vent filter, has a flange with an inside diameter of 10mm. By using the included adjustable worm gear clamp, this air filter will fit tubes with outside diameters from 3/8 inch to 1/2 inch (8-12mm). Spectre breathers use pre-dyed synthetic media for lasting color, feature a triple chrome-plated steel top and base, and come factory pre-oiled and ready to use.
  • Triple chrome-plated steel top and base
  • Made with pre-dyed synthetic media for lasting color
  • Includes a stainless steel adjustable clamp
  • 10 mm flange inside diameter
  • Fits 3/8 inch to 1/2 inch (8-12mm) tubes
  • Offered with black, red, blue, or white media

Available Information

Part SPE-3991 Product Specifications

Air Filter ColorBlack
Filter MaterialNon-woven Synthetic
Flange Inside Diameter0.375 in (10 mm)
Flange Length0.75 in (19 mm)
Height1.75 in (44 mm)
Outside Diameter2 in (51 mm)
Product Box Height2.25 in (57 mm)
Product Box Length6 in (152 mm)
Product Box Width4 in (102 mm)
Product StyleSpectre Breather Air Filter
Top Material/FinishChrome
Top StyleMetal
Weight0.2 lb (0.1 kg)

Product Reviews

November 3, 2014 - Part 3991
This is a great breather. Hard to find in Chrome.

Review part 3991