aFe 23-91129 Quantum Pro-5R Air Filter 5" Flange 9" Height Inverted Top

Vehicle Fitment

• Universal fit - Designed for custom or aftermarket intake systems compatible with a 5" flange and 9" height (inverted top design)

Features

• Quantum Pro-5R multi-layer cotton gauze media for high airflow and filtration
• Inverted top design for enhanced fit versatility and airflow direction
• Oiled filter media for enhanced particle capture and engine protection
• Washable and reusable filter element for long service life
• Heavy-duty polyurethane top and base resist heat and chemicals
• Open pleat construction maximizes usable surface area
• Integrated bump seal ensures a secure, leak-free clamp fit
• Excellent airflow characteristics vs. standard paper filters

Specifications

• Brand: aFe
• Part Number: 23-91129
• Filter Type: Universal Air Filter
• Filter Media: Quantum Pro-5R cotton gauze (oiled)
• Flange Inner Diameter: 5"
• Filter Height: 9"
• Shape: Tapered/inverted top design
• Reusable/Washable: Yes
• CARB Legal: No (universal application)

Included Components

• 1x aFe Quantum Pro-5R Universal Air Filter (23-91129, 5" flange x 9" height, inverted top)

Product Description

The aFe Quantum Pro-5R Air Filter (23-91129) with a 5" flange and 9" overall height features an inverted top design engineered for universal clamp-on or custom intake applications where vehicle-specific OE filters do not apply. Its premium multi-layer Pro-5R cotton gauze media is oiled to maximize airflow while effectively trapping dust and contaminants, outperforming traditional paper elements in both flow and protection.

Constructed with a heavy-duty polyurethane top and base and designed for reusable service, this air filter can be cleaned and re-oiled for continued performance over many cycles. The open pleat configuration increases usable media surface area, promoting enhanced engine breathing and throttle response in performance intakes, turbo inlets, or custom cold air systems. Ideal for enthusiasts looking to improve airflow and protection in universal intake setups with easy maintenance and robust design.