Spectre Performance® - Breather Filter
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Spectre Performance® 3991

Breather Filter
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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. Note: Legal in California only for racing vehicles which may never be used, registered, or licensed for use upon a highway. See spectreperformance.com for CARB status on each part for a specific vehicle. Full overview
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Product details

Since 1983 Spectre has designed and offered unique and innovative parts and components to fuel your car or truck obsession. Our products are designed and tested to perform and last. We have a state of the art chassis dynamometer with diagnostic and emissions testing and performance optimizing capabilities, as well as a top of the line Super-Flow flow bench with airflow, pressure, and velocity measuring capabilities in both intake and exhaust modes, and also a whole bunch of expensive scientific laboratory type equipment, all of which are used to develop Quality Products that Perform. From humble beginnings in a two car garage, to setting world records and becoming the first wheel driven, gasoline powered car to run over 400 mph.
  • SKU: 3991
  • UPC: 089601399102
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Item Details

air filter color Black
prop 65 (c, r or cr) CR
shape conical
color black
weight 0.2 lb (0.1 kg)
top style Metal
top material Chrome
prop 65 yes/no Yes
package type Blisterpack
filter material Non-woven Synthetic
package material Plastic Other
outside diameter 2 in (51 mm)
item type High Performance
height 1.75 in (44 mm)
flange length 0.75 in (19 mm)
flange inside diameter 0.375 in (10 mm)
filter size 1.75 in

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