K&N 66-3330R X-Stream Drag Racing Scoop Filter for 100-8505/3158

Vehicle Fitment

• Universal - designed for use with the K&N Composite NHRA Scoop (part #100-8505) or the Harwood 3158 Scoop

Fitment Notes

• This is a universal drag-racing base-mount scoop filter, not a vehicle-specific replacement filter - no year, make, or model applies. It is built for use with the specific hood scoops listed above; confirm your scoop matches before ordering. Intended for racing use, not for street/emissions-compliant applications.

Features

• Protects the engine from dust and debris on the track and in the pits
• Engineered for high-performance drag racing air induction
• Round tapered cotton gauze filter for high airflow with strong filtration
• Filters up to 99% efficiency while maintaining high airflow
• Black powder-coated X-Stream top for a durable, finished look
• Complete mounting hardware included for installation

Specifications

• Style: X-Stream Custom Assembly
• Filter Shape: Round Tapered
• Filter Material: Cotton Gauze
• Filter Height: 3 in (76 mm)
• Filter Inside Diameter: 8 in (203 mm)
• Inlet/Neck Flange Diameter: 7.313 in (186 mm)
• Overall Assembly Height: 4.25 in (108 mm)
• Top Material: Black Powder Coated
• Filtration Efficiency: Up to 99%
• Warranty: 1 Year Limited

Included Components

• 1x K&N X-Stream Round Tapered High-Flow Air Filter (replacement filter: 28-4245)
• 1x Black Powder-Coated X-Stream Top
• Mounting Hardware

Product Description

The K&N 66-3330R is a complete X-Stream base-mount scoop filter assembly built for drag racing applications, designed to fit the K&N Composite NHRA Scoop (part #100-8505) or the Harwood 3158 Scoop. It protects the engine from dust and debris picked up on the track and in the pits while feeding the engine through a hood scoop setup.

At its core is K&N's round tapered High-Flow cotton gauze filter, rated up to 99% filtration efficiency, paired with a durable black powder-coated X-Stream top for a finished, race-ready look. The filter is washable and reusable, making it a practical long-term choice for a car that sees regular track use.

This is a universal racing assembly rather than a vehicle-specific filter, so fitment depends on your scoop, not your car's year, make, or model - confirm your scoop matches the K&N 100-8505 or Harwood 3158 before ordering.