aFe 24-91020 MagnumFLOW Pro 5R Oiled Conical Air Filter 4F x 6B x 4.5T x 6H

Vehicle Fitment

• Universal Fit - compatible with any cold air intake, short ram intake, or custom intake system with a 4.0" inside diameter inlet opening; designed as a replacement filter for aFe Magnum FORCE intake systems

Fitment Notes

• Universal fitment - not vehicle-specific. Customer must verify that the intake tube or coupler has a 4.0" inside diameter opening to accept the filter's flange.
• Clamp-on style - compatible with any intake tube measuring 4.0" I.D. at the mounting point.
• Pro 5R media is oiled - filter must be re-oiled with aFe blue filter oil after every cleaning. Do not use Pro DRY S oil or any non-aFe oil on this filter.
• Inverted top design provides additional filter surface area compared to standard conical filters of similar dimensions.
• Includes a stainless steel clamp and coupler.
• Re-oil with aFe P/N 90-50001 or 90-50501 filter restore kit (sold separately).

Features

• Five layers of progressively finer mesh pre-oiled cotton gauze media for maximum airflow and top-tier filtration performance
• Inverted top design increases filter surface area for greater dust-holding capacity and longer service intervals
• Deep, open, rounded pleats provide maximum usable filter surface area and superior flow even when dirty
• 100% polyurethane top and base frame for structural rigidity and long filter life through repeated heat cycles
• Integrated urethane bump seal ensures a tight, leak-free, gasket-free fit without sealants
• Washable and reusable - cleans with aFe Power Cleaner and recharges with blue aFe filter oil
• Highest-flowing aFe filter media for maximum power gains on street and track applications

Specifications

• Filter Style: Conical, Clamp-On, Inverted Top
• Flange Inside Diameter (Inlet): 4.0"
• Base Diameter: 6.0"
• Top Diameter: 4.5" (Inverted)
• Height: 6.0"
• Filter Media: Pre-Oiled Cotton Gauze (5-Layer Progressive)
• Media Type: Pro 5R (Oiled)
• Frame Material: 100% Polyurethane
• Flange Position: Center
• Washable: Yes / Reusable: Yes / Pre-Oiled: Yes
• Compatible Fuel Types: Gasoline and Diesel

Included Components

• 1x aFe MagnumFLOW Pro 5R Oiled Conical Air Filter (24-91020)
• 1x Stainless Steel Clamp
• 1x Coupler

Product Description

The aFe 24-91020 MagnumFLOW Pro 5R is a universal conical clamp-on air filter built around aFe's highest-performing oiled cotton gauze media. Designed as a replacement filter for aFe Magnum FORCE cold air intake systems with 4.0" inlet tubes, the five layers of progressively finer pre-oiled cotton gauze deliver maximum airflow and filtration in one package - making the Pro 5R the top choice for performance-focused builds on street and track. Its inverted top design expands the filter's usable surface area beyond what a standard conical shape allows, translating into both higher flow capacity and greater dust retention between service intervals.

The 100% polyurethane frame resists the repeated heat cycles of an engine bay without warping or losing its molded shape, and the integrated urethane bump seal conforms tightly to the intake tube for a no-leak, gasketed-free seal. Maintenance requires washing with aFe Power Cleaner followed by re-oiling with aFe's blue filter oil - restoring the filter to full performance. The included stainless steel clamp and coupler provide a secure, vibration-resistant installation on any compatible 4.0" I.D. intake tube.