K&N 59-5006 Marine Flame Arrestor / High-Flow Air Filter (3.75" Flange)

Application Fitment

• Universal marine-engine or custom-intake use - for any engine with a 3.75 in (95 mm) ID flange

Features

• Marine-approved flame arrestor design - compliant with marine application safety standards
• Washable, reusable oiled cotton-gauze air filter media with epoxy-bonded screen for long life
• Oval-tapered / straight-oval filter shape for smooth, high-volume airflow
• Pre-oiled and ready for installation - includes sealing flange and mounting hardware
• Stainless-steel top cap for durability and corrosion resistance in marine environments
• Improved airflow and can increase engine horsepower and torque when combined with proper intake plumbing
• Simple hose-clamp installation - no need for custom fabrication or permanent modification
• Washable/re-usable design - reduces long-term maintenance compared to disposable filters

Specifications

• Flange inside diameter: 3.75 in (95 mm)
• Flange type: Centered, single-flange
• Flange length: 0.75 in (19 mm)
• Overall filter height: 4.00 in (102 mm)
• Base outside dimensions: Approx. 9.5 in x 4.625 in (241 mm x 117 mm)
• Top cap: Stainless-steel metal top
• Filter media: Oiled cotton-gauze with epoxy-bonded screen
• Washable / reusable: Yes - filter can be cleaned and re-oiled when needed
• Mounting: Hose/clamp-on to 3.75 in ID intake tube or carburetor flange
• Weight: ~1.6 lb (≈ 0.7 kg)
• Warranty: Manufacturer's limited warranty (as per marine part standard)

Included Components

• 1x Oval-tapered flame arrestor air filter (with 3.75 in flange, stainless-steel top)
• Sealing flange / rubber collar (if required by intake application)
• Mounting hardware / instructions (where applicable; clamp-on installation)

Product Description

The K&N 59-5006 Marine Flame Arrestor is a high-flow, reusable air filter and flame-arrestor designed for marine engines, boats, or custom intake systems that accept a 3.75-inch inside-diameter flange. Its oiled cotton-gauze filter media - combined with an epoxy-bonded wire screen - offers strong filtration and excellent airflow, while the stainless-steel top cap ensures durability and corrosion resistance in marine or humid conditions. The flame-arrestor design adds a layer of safety by reducing the likelihood of back-fires or flash-backs - a key benefit for marine and open-air engine setups.

Because 59-5006 is a universal / semi-universal part rather than vehicle-specific, it offers flexibility for custom builds or replacement of aging marine filters. Installation is simple: clamp the filter onto a compatible 3.75-inch intake tube or carburetor flange using basic hose clamps - no cutting or permanent modifications required. The washable, reusable design means long service life and reduced maintenance cost. If your marine engine or custom intake setup requires a dependable, high-flow, flame-arrestor-rated filter, 59-5006 is a proven, easy-to-install choice.