BOOST Products Black Performance Air Filter for Custom Intakes, 2.5-4" Inlet Options

The BOOST Products black performance air filter is a washable, reusable intake filter for custom builds that need a subtle all-black finish.

Fitment Information

For custom intake systems. Select the filter connection size that matches your intake tube outside diameter and confirm there is enough room for the chosen filter length.

Available Size Options

• 2.5-inch / 63.5 mm inlet ID, 5-inch / 127 mm filter length
• 2.75-inch / 70 mm inlet ID, 5-inch / 127 mm filter length
• 3-inch / 76 mm inlet ID, 3.5-inch / 89 mm, 5-inch / 127 mm, or 8-inch / 200 mm filter length
• 3.5-inch / 89 mm inlet ID, 5-inch / 127 mm or 8-inch / 200 mm filter length
• 4-inch / 102 mm inlet ID, 5-inch / 127 mm or 8-inch / 200 mm filter length

Specs and Features

• Filter Details
  • BOOST Products black performance air filter
  • Pre-oiled cotton filter media
  • Washable and reusable design
  • Stable wire-mesh support structure
  • Part number and barcode vary by selected size
• All-Black Construction
  • Black filter media and wire mesh
  • Flexible black silicone top and base
  • Flexible silicone helps prevent the scratching and tearing associated with rigid metal end caps

Product Description

This BOOST Products performance air filter is a practical choice when putting together a custom intake, turbo inlet, or engine-bay air-filter setup. Its pre-oiled, washable cotton filter media can be cleaned and reused instead of being replaced after every service interval.

The all-black color keeps the intake setup understated, while the flexible silicone top and base provide a cleaner contact point than a rigid metal end cap. Choose from several inlet diameters and filter lengths to suit the tube size and available space in your engine bay.

Sizing and Selection

Measure the outside diameter of the intake tube where the filter will mount. The listed connection measurement is the filter inlet inside diameter. Also check clearance around the filter for the hood, radiator support, wiring, and nearby engine components before choosing a longer option.

If your custom intake uses a MAF sensor, keep its airflow requirements in mind when planning the tube layout. A properly sized straight section and correctly placed airflow straightener can help support a more consistent MAF signal.

Related Parts for Custom Intake Builds

• BOOST Products MAF honeycomb airflow straightener - Available for 3, 3.5, and 4-inch intake tubing where a custom system uses a MAF sensor.
• BOOST Cobra Head 90-degree silicone elbow - A compact routing option for compatible 2.5, 3, 3.5, and 4-inch custom intake tubing.

About BOOST Products

BOOST Products builds air-intake, plumbing, oil-cooling, and heat-management components for turbocharged street and motorsport projects. Its filters, hoses, and fittings help builders configure systems around their available space and tubing size.