aFe POWER Magnum FLOW 4" (102mm) Clamp-On Cone Air Filter, Universal High-Flow Pod Filter, Washable/Reusable, Pro 5R (Oiled) or Pro DRY S (Oil-Free) for Turbo/Cold Air Intakes, Magnum FORCE Stage 2 Replacement - 24-90113 / 21-90113

aFe POWER 4 inch Clamp-On Cone Intake Filter - Serviceable Performance Element

Build a better intake and protect your engine with a premium clamp-on cone filter from aFe POWER. This 4 inch inlet filter is designed for custom pipework, turbo inlet upgrades and induction kit refreshes where dependable airflow and filtration are essential. It is a cleanable, reusable filter element that helps your engine breathe efficiently while keeping dirt at bay. Our team at MJ Modifications has installed these on numerous customer builds and our own projects, and the feedback is consistently strong on quality, fit and real-world drivability.

Why enthusiasts choose this filter

• 4 inch 102 mm clamp-on neck for easy integration with custom intakes, turbo pipework and aftermarket induction systems
• Deep pleated media for a large surface area that supports strong airflow and extended service intervals
• Multi-layer filtration options to suit street use, spirited driving and tuned applications
• Heat-resistant polyurethane end caps maintain a reliable seal in demanding engine bays
• Retention groove interface for quick service in compatible aFe housings from selected Stage 2 style kits
• Clean, refit and go - designed to be reused to lower running costs over time
• Stainless steel clamp included for a secure installation

Choose the media that matches your build

• Pro DRY S - three-layer oil-free synthetic media that is easy to maintain with aFe cleaner. Great for daily-driven cars and light performance use. Part number: 21-90113.
• Pro 5R - five-layer oiled cotton gauze engineered for maximum flow while providing excellent filtration. Part number: 24-90113.

Dimensions

• Inlet inner diameter: 4 inches
• Base: 7-3/4 inches x 6-1/2 inches
• Top: 5-3/4 inches x 4-3/4 inches
• Height: 7 inches

Where it works best

Ideal for custom induction setups, turbocharger inlet pipes, remapped street builds and as a replacement element for many aFe Stage 2 style intake kits that accept a 4 inch clamp-on filter. Commonly used on popular turbo petrol and diesel applications, including BMW turbo six models such as 335i, 435i, M135i and M235i when a 4 inch neck is required. If you are unsure about space or sizing, contact us and we will help you select the correct element for your intake tube.

What we like in the workshop

• Consistent fitment and durable construction that stands up to heat and vibration
• Noticeably freer breathing with sharper throttle response reported by many customers
• Serviceable design saves money compared with disposable paper filters

Fitting service

Want a professional install or a bespoke intake fabricated to suit your car and heat management needs? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer and warranty

Brand: aFe POWER

Warranty: limited lifetime warranty from the manufacturer.

Part numbers

• Pro 5R - 24-90113
• Pro DRY S - 21-90113

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