K&N Universal Tapered High-Flow Air Filter (4" Flange) - RE-0870

Maximum airflow and washable filtration for custom high-performance intake systems. The K&N Universal Round Tapered Air Filter (RE-0870) is engineered to deliver increased horsepower and exceptional engine protection. Featuring a 4-inch flange diameter and a high-flow cotton gauze design, this universal pod filter is ideal for custom turbo piping, cold air intake kits, and high-output engine bays.

Applications & Custom Fitment

Designed for universal compatibility with custom intake setups:

• Custom Intake Piping: Fits 4-inch (102mm) diameter intake pipes, turbo inlets, and mass airflow sensor adapters.
• Performance & Motorsport: Ideal for modified street cars, track cars, drift builds, and high-boost turbo setups.

Key Specifications

• Part Number: RE-0870
• Filter Shape: Round Tapered (Cone)
• Flange Inside Diameter: 4 in (102 mm)
• Filter Material: Red Cotton Gauze
• Flange Type: Centered

Kit Contents

• 1x K&N RE-0870 Universal High-Flow Air Filter

Building a custom intake setup? Drop our team a message if you need help matching dimensions or cleaning accessories for your filter.