RYANSTAR RACING 76mm (3") High-Flow Closed-Top Cone Air Filter Dust Cove — Polyester Stretch Cover, Elastic Hem

RYANSTAR's 76mm (3") High Flow Closed-Top Cone Air Filter Dust Cove is a stretchy protective cover that slips over cone air filters to block large debris while preserving airflow.

This lightweight dust cove is made to fit 3-inch (76mm) closed-top cone filters commonly used on cars, motorcycles, and small engines. It’s constructed from durable polyester with a stitched elastic opening so you can install it by hand in seconds. The cover reduces the amount of coarse dust and grit entering the filter element, helping extend service intervals without lowering performance in normal or cold conditions.

How does the dust cove affect engine airflow and performance?

The cover is engineered to be high-flow: it screens out large particles but keeps sufficient air moving into the intake so throttle response and horsepower are not compromised. It won’t replicate a paper intake filter’s microscopic filtration but removes the bigger contaminants that lodge in the outer mesh.

• High-porosity polyester allows unrestricted airflow for most street and light-performance applications.
• Designed for closed-top cone filters to avoid covering intake openings and maintain flow patterns.
• Helps maintain peak performance by preventing clogging of the outer mesh layer.

Will it truly keep dust and debris out of my air filter?

Yes — the primary function is coarse-particle exclusion. The RYANSTAR cover blocks the larger grit and debris that typically lodge between the filter’s metal mesh and filter media, reducing the rate at which the element fills with visible dirt.

• Reported to prevent more than 90% of larger dust from reaching the filter surface.
• Reduces ingress of leaves, gravel fragments, and road grime that shorten filter life.
• Helps preserve the filter’s inner pleats so you can extend cleaning or replacement intervals.

What sizes and fitment should I expect?

This dust cove is made to fit cone filters with a 3-inch (76mm) outer diameter and a typical length of about 6.26 inches, but the elastic edge allows for slight variations in shape and contour. It’s a universal accessory intended for many aftermarket cones and small-intake setups.

• Nominal fit for 76mm (3") diameter closed-top cones and similarly sized intakes.
• Stretchy elastic hem accommodates minor size differences and tapered cones.
• Works with hundreds of filter styles where a slip-on cover is practical.

How easy is installation and maintenance?

Installing the cover is tool-free: slide it over the cone and tuck the elastic hem around the base or outer lip. The polyester material is washable and dries quickly; inspect it during routine filter service and replace if torn or heavily contaminated.

• Quick on/off fit with a stitched elastic opening for steady retention.
• Machine-washable or hand-washable for simple maintenance.
• Durable polyester resists tearing and performs in cold weather without stiffness.

Who is this for: The RYANSTAR 76mm dust cove is ideal for drivers and riders who use aftermarket cone air filters and want an inexpensive, easy way to reduce coarse contamination. It’s suited to street cars, daily commuters, adventure bikes, and anyone who performs regular filter maintenance and wants to stretch service intervals without modifying intake performance.